(Topic ID: 77391)

Gottlieb Sys80 Universal Tester (Leon design) -- MPU Diagnostic Tool


By acebathound

5 years ago



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  • Latest reply 2 years ago by acebathound
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    #1 5 years ago

    Update 01/16/2016: PCB available via website at http://www.pinitech.com/products/gottlieb_universaltester.php

    *************

    This is a diagnostic tool / board for use at the bench, when diagnosing Gottlieb Sys80 MPU board issues.. born from Leon's creation here: http://www.pinwiki.com/wiki/index.php?title=Leon_Borre_Gottlieb_System_80_CPU_Board_Repair

    The heart of things are the test ROMs, but this board makes it easier to plug-and-play with diagnosing rather than having to connect jumpers or make any modifications to the board. It's a basic board that plugs into the TC1 socket on the top of the Sys80 MPU board and has an LED connected to address A6 (this is the address signal that Leon used for blinking the LED as described in the link above).

    It's now recommended that you utilize this board with Marco's Sys80 Test ROM instead of Leon's, as Marco's ROMs are much more extensive in what they test & he's also active here on the forums.

    gottliebsys80_univtester_assembled_(resized).jpg

    #3 5 years ago
    Quoted from ChrisHibler:

    Well...I use Ed's tester, which is awesome, and really don't have need for a different tester. I've been so happy with Ed's that I never investigated Leon's process. Before your work, which looks excellent, it was a lot of work to implement Leon's test.
    Ed was working to port his tester to a new chip set, IIRC, to address obsolescence.

    I wasn't lucky enough to get one of Ed's testers when he had them available, but it seems to be what the board repair and service technicians are using to quickly diagnose System 80 MPUs and is hands-down a more complete tester. Leon's is much more basic, but still better-than-nothing Ed mentioned on RGP at one point that Leon's design was part of his inspiration for the Quickscan80 tester which I thought was pretty cool. Anyway, I needed something in a pinch to help with fixing up a bunch of System 80 mpu boards.

    Here's a shot of it in a board. I think I inadvertently labeled the eprom as "System 80/80A Only!". Leon's writing style is sometimes hard to understand (assuming since it was translated) but it looks like the universal board just runs the 2732 eprom and it can be used in System 80, 80A or 80B.

    **UPDATE:** I just confirmed that the data within the 2732 and 2764 files match (the 2764 is just a padded file).

    gottlieb_univtest2.jpg

    #6 5 years ago

    I didn't do that!! lol. That's someones "oops I just ripped up a bunch of traces" mod. Not documented on pinwiki yet. Should be a good challenge.

    #10 5 years ago

    Just repaired a System 80B board with the assistance of this tester (not the one pictured though.. that one is going to take some time!)

    I was getting no flashes.. then removed the tester and started checking the cpu lines per the instructions. The IRQ signal was less than 0.2v and on the other side of the pull-up resistor was around 5v. I cut the IRQ pin on the CPU hoping it was the CPU and not one of the RIOTs shorting the signal and as luck would have it, the IRQ signal at the RIOTs then all went to around 4-5v. Replaced the cpu with a spare, put the tester back into the board and the board then passed all 5 of the tests (CPU, RAM, U4 RIOT, U6 RIOT, U5 RIOT).

    I had to clean up the instructions some before I started testing with this again as Leon's had been confusing since it mentions procedures for both the "simple tester" and "universal tester". So I'm revising them to make a ton more sense and will be adding in more information as I work through some more boards. This thing isn't going to pinpoint the exact problem if the cpu is dead, signals would then need to be checked if you aren't getting the first flash.. but it definitely helps point you in the right direction.

    #13 5 years ago
    Quoted from Gerry:

    I would like one of these, or an Ed version, not that i know who Ed is.. LOL

    Ed of GPE (Great Plains Electronics - http://www.greatplainselectronics.com) who is an awesome asset to this hobby, supplying much needed electronic components.. corrosion repair kits, high quality replacement power supplies and also creator of the Quickscan80 Gottlieb System 80 MPU tester. He's also worked with manufacturers to get some parts made that are no longer produced so we can keep our machines running. Great guy, great supplier.. ships quick and is very helpful and knowledgeable. His Quickscan80 is hands down the tester to get for Gottlieb System 80 machines, when he makes the next batch available I'm definitely grabbing one.

    1 month later
    #19 5 years ago

    I'm hoping Ed's new Quickscan 80 isn't too far from being released because it looks like he could sell 10-20 units rather easily from the interest I've seen on here and RGP. Seems like someone is always looking for a Quickscan 80. I'd think even if there's an easier way to use Leon's test eprom such as this adapter, most people (including me) would still purchase one of his units when it becomes available since it does a heck of a lot more. I definitely like the idea of helping people have an easier time fixing up System 80s.

    The two extra prototypes I had of this Universal Tester were sent out to several people and one of them used it to fix up a handful of System 80 boards fairly quickly and had some really positive feedback on it. I also found that there's a guy in Holland that created his own test eprom that does more thorough tests than Leon's on the 5101, RIOTs, etc and it works with this setup too. I haven't had a chance to fix any boards with that alternate test eprom, but it looks pretty promising.

    I'm looking at possibly incorporating this design into a piggyback replacement board. For more information on that, go on over to this thread: http://pinside.com/pinball/forum/topic/alternative-gottlieb-sys80b-piggyback-fix-plug-and-play-interest-check

    2 months later
    #24 5 years ago
    Quoted from jjoravec:

    Any status update on the Universal Tester?

    Getting there Been busy with some house projects, but finally had a time to make a few small tweaks to the PCB today. I'll post an update in a few weeks when I get revised boards in & will have several more that I can assemble and make available for sale at that time. I hope to get this released as a shared Oshpark design to make it more widely available, just not sure exactly when that will happen.. kind of want to get it tested a bit more by others.

    2 weeks later
    #25 5 years ago

    Update: Just got 3x more boards in. I think all but one of those boards will be spoken for, but I should have a dozen more pcbs in a few weeks for anyone else wanting to get in on the initial batch & provide some feedback. I'll update here when they are available, going to keep the bare board or assembled costs reasonable since I intend to release this as a shared Oshpark design, but I'd like some more people to test the boards before I make it available on Oshpark.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"

    1 week later
    #28 5 years ago

    Just got a small batch of boards in. I'm going to build some more of these out over the several days. I have some work-in-progress instructions that I created based off of translations of Leon's instructions & highly edited along with my own updates -- will include a link to those to anyone that gets one of these.

    sys80_tester_pcbs.jpg

    Trying to offer these at a reasonable price so a few more people can use them & provide some feedback. This is somewhat of a side-project and as such the instructions are a work-in-progress. Also just want to note that I did not create the test program, Leon Borre hand-coded hex values and I have no way of changing the program or knowing *exactly* what it's doing. This board just makes it a bit easier to work with Leon's eprom.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"

    1 week later
    #30 5 years ago

    BUMP. Anyone else want one of these right now? I have 6-7 more boards I can assemble. See above for details/pricing.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    1 month later
    #31 5 years ago

    Haven't really heard much new feedback on the last batch of these I sent out, but assuming they have been working out okay for those that ordered.

    I'm posting the shared Oshpark design at http://www.pinitech.com/free_designs.php for anyone that wants to order bare boards & build it themselves. Don't expect much support on these since they are being made free & USE-AT-YOUR-OWN-RISK applies here!

    There's also another more advanced test ROM that was written by Marco Albus -- here's a Youtube video he posted of its usage --

    I didn't want to put him out with directing too many people to him but he seems pretty open to sharing the ROM with anyone that asks for it. I've tested it briefly with the Universal Tester board & it seemed to be flashing LEDs as expected. Really didn't test to thoroughly but I expect to use it more later this year. Marco recently posted in another thread here on Pinside as user "MarAlb" (quote below).

    Related to the subject (i don't want to hijack your topic)....i did write a few test Eprom's inspired by Leon, also for Gottlieb system 80. There is a small movie from it at youtube (from an earlier version, i added some more things later). It does a more thorough job testing the memories, it tests also the switch matrix inputs and the socket for PROM2. No problem to share it with you.

    Thread here: https://pinside.com/pinball/forum/topic/mypinballs-new-system-80b-cpu-board

    I still have a handful of Universal Tester boards available from the latest batch I ordered & can sell them as bare boards. PM if interested.

    Again, no support on these really, since it's being made free & not running any code I can support. I'll post a parts list shortly.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #33 5 years ago
    Quoted from MarAlb:

    Nice to meet you again here at Pinside It is nice to see people being creative and creating stuff to keep pinball machines alive. My respect to everyone putting effort in this. If i can add something to that by sharing my test Eprom's it is no problem for me. You can send me a PM via Pinside or Youtube if you would like to obtain the images of the ROM's and a description to the tests. And yes, i am a bit embarrassed i still don't have a website yet with everything published.....
    Marco

    Hey Marco, nice to see you here! If you want I can put a separate page up on my website with your test ROM info & contact info. I could also host the file if you want & include any information you'd like there with instructions + a Paypal donation link too if you'd like to do that to help support your efforts (you'd just need to send me the Paypal donate button link that you create in Paypal). Otherwise I'll just have people contact you however you wish & you can let me know if/when you do get a website up & running so I can link to it.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #35 5 years ago

    Wow! Sounds great! Okay for now I will just direct them to your Youtube video / Pinside username.

    Thanks for creating new and improved test eproms, hope you get them posted some day at gameroom-etten!

    6 months later
    #36 4 years ago

    Another thread got me thinking about this one..

    I'm curious, for those that have used this tester (either buying an assembled board from me or purchasing bare boards through Oshpark & building it).. has it helped you to diagnose Sys80 board issues? Personally I found it pretty useful with Leon's ROM. I never really got the chance to exercise Marco's ROM out a lot.. but it seemed like it was much more thorough and make this tester into something even better. I plan on getting back to testing with Marco's ROM soon.

    I saw someone on KLOV that mentioned purchasing boards through Oshpark..and it seemed to help them narrow some things down. Really haven't had any emails or comments on the tester.. or seen anyone else talk about it. From downloads of the pdf manual, it seems there have been a good handful of people that purchased the bare boards through Oshpark. Hopefully it has been useful!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #38 4 years ago
    Quoted from Pin-one:

    Just seen your post and it reminded me I puchased some boards from Oshpark. Were do I find instructions on how to populate the board? I would purchase a complete board but don't see a link to do so. I think I own at least one of all your test boards and would love to get this one as well. Great work and thank you!

    No official instructions yet.

    My best suggestion is then to build from the inside-out. Basically look at the board or mock-place the components and think of how you might get yourself in trouble if you soldered one component before another component. I think it goes.. 1.2k watt resistor, then the 20 pin sip header at the top of the board, then both 12-pin machine sip socket headers for the eprom. Then the 20 pin sip header at the bottom of the board. LED can be done any time.

    I had taken some pictures at one point.. if I can find those I'll post some quickie assembly instructions. If I can't, I'll try to get some pictures the next time I build one.. or someone else that is building it can take some pictures. It's not too bad.. there's just a few components that if soldered before the others, can make it a bit more difficult to solder the remaining components. Not impossible, just more of a challenge!

    Thanks for the comments!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #40 4 years ago
    Quoted from G-P-E:

    For several people that have been asking -- the QS80 Ver 3 is nearly ready.
    Bit more software testing before it can be called done.
    Ed

    I've been asking!

    I definitely look forward to finally getting one of your testers Ed! Nice work, it looks great!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    2 months later
    #48 4 years ago
    Quoted from ForceFlow:

    For the pinitech board, does it work with a 7404, or do you need to use a 74LS04? I'm not sure what the difference is between the two ICs.

    7404 will work just fine Silkscreen on the PCB was changed shortly after the first few small runs to just "7404". I've used 74LS04 and it's worked just fine, but 7404 is technically a bit better (or 74H04) just in terms of compatibility with the MPUs circuitry.

    Also.... if you haven't already, hit Pinside user "MarAlb" up for his program code that you can burn to a 2732 eprom. It's much more extensive in what it tests than Leon's and he has been working hard on improving it even more over the last year. Unfortunately I haven't had the chance to get back to testing Gottlieb boards to try out all the new features of it I know a recent addition to the code was slowing down the led blinks.. since it gives many more blinks than Leon's program when it's running tests & the led blinks were happening pretty quick prior to that.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    2 months later
    #51 4 years ago

    How's this working out for people? Helping to get your Sys80 boards diagnosed?

    I'm gonna be getting back into fixing up some more machines in about a month.. should be able to test with Marco's latest ROM code then. Will update here when that happens.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #53 4 years ago
    Quoted from ForceFlow:

    Yep, I fixed my Touchdown MPU a while back with Marco's ROM and your PCB.

    Awesome! Touchdown is a great game IMO. I'm sure Marco will love hearing his ROM has been helpful too!

    1 month later
    #57 4 years ago
    Quoted from Pinterest:

    Still have one of these available?

    Yes, I do have some boards available. Let me know if you're interested in bare board, kit or assembled & if you have an eprom / programmer or if you need an eprom supplied with the board.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    4 weeks later
    #60 4 years ago
    Quoted from Mace:

    Not to worry managed to work out how to order the board and found the headers in China.

    Sorry Mace, was away for the last several weeks and just got back. Glad you got everything sorted out!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    2 months later
    #61 3 years ago

    Just an update, I talked with Marco (MarAlb) about offering eproms with this tester for anyone interested in ordering assembled boards and I'm pretty sure we'll have something setup there so that I can offer either Leon or Marco versions of eproms via Pinitech.com @ http://www.pinitech.com/products/gottlieb_universaltester.php I have some 2732 eproms on-the-way. Marco will get a small kick-back for eproms that sell with his version of the code. Will probably price the eproms at around $10 for the Marco version and send $5 his way. I just need to pay for eprom cost and a little bit of time to program/label them, but the awesome code is kudos to Marco

    For the Leon version.. I'll probably offer that eprom a little cheaper since the functionality is much more basic. I'll use proceeds from that eprom as donations to Pinside. I always wanted to work something out with this board so I at least had some compensation for building/assembling the board & then there was also some kind of "giving back" since it was Leon's design and code (originally).

    I highly recommend Marco's code. You can try Leon's code out as well, but Marco has put in a TON of work into his eproms. If you just go the "free" route with everything (ie. ordering boards off OSHPARK, and asking Marco for his code).. please consider finding a way to donate to Marco for all the effort he put into the test ROMs. He's a giving person and probably wouldn't ask anyone to donate.. but if we want these ROMs to improve or other cool test ROMs for various boards (he has lots of them!!) then throwing him a few bucks ain't gonna hurt Like I said, if you buy the eprom through me I'll make sure he gets the donation.

    In other news, I'm seeing a steady stream of downloads for the Leon instructions I transcribed. So it does look like quite a few people are finding this adapter.. maybe ordering boards and using it. I'm surprised there isn't more talk here!

    If you've used this board and found it helpful, let's hear it! I'm sure Marco would be pleased to hear people have found his test ROM code useful as well!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    2 weeks later
    #62 3 years ago

    Couple more updates..

    I got some 2732 eproms in, so have now added ROM options for assembled boards:
    http://www.pinitech.com/products/gottlieb_universaltester.php

    Also, it appears someone in France is assembling these for sale:
    http://tinyurl.com/znqbtdd

    A customer brought that to my attention. I found that interesting, it's the first I've seen someone in another country post pictures of the board being used. There's been a fairly consistent 15-20x or so people each month downloading Leon instructions for the board. So even though it's pretty quiet here, looks like some people are trying it out!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #65 3 years ago
    Quoted from MarAlb:

    For those who want to use the pinitech adapter in combination with Leon's system 80 test ROM......
    Using Leon's test ROM can be very confusing. Before I started to write my own test ROM's I encountered the limitations and the behaviour of Leons' test ROM. At that time, I talked with Leon also about this and he was also aware of that. But he was ill already and didn't have the time anymore to change the ROM :~(

    Based on that info I think I'm going to only offer your ROM as the option for assembled boards via the website.

    Really, I'd recommend MARCO's EPROMs for this Universal Tester now since they are more advanced & come with some great instructions -- plus the guy that coded the test ROM is right here on Pinside So rather than make it confusing for someone that doesn't really know which version they need/want, I'm going to offer the one that will give you the most bang-for-the-buck with it.

    I just built 8x of these out and they're ready-to-go. Trying to get ahead of orders a bit in 2016 (have a *LONG* while to get there hehe).

    Thanks Marco for all of your contributions & information here. It's really nice being able to offer your ROMs with this board!

    gottliebsys80_univtester_assembled_300_(resized).jpg

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #69 3 years ago

    I'll probably offer these as bare boards / kits on my website soon so people have that option too, now that I feel more comfortable selling them with Marco's ROMs and if there's questions on what's being checked or any changes needed then there's some chance of having support there. Before, I knew that Leon's ROMs weren't too extensive in what they tested.. just offering a very basic level of go or no-go with the board if you got any blinks from the led. I had no clue how they were working other than what I translated from his instructions & it wasn't enough really to offer as anything official.

    Thanks guys for posting those pictures. Nice to see them being used! Plenty of people seem to be downloading the instructions and using these, just not a lot of feedback here so it's always nice to see that this stuff is helping people!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #71 3 years ago
    Quoted from fast_in_muskoka:

    I bought a leon version a few years back to try and resurrect an Amazing Spidey.
    system 80 boards, and under playfield parts needed too much, so never figured out how to use the tester
    this new Marco might be a good investment as not too long ago I brought hove a very nice HH sample game ( may be HUO ).
    Also bought a quantity of every pin fuse known to man from CoreyStup here on Pinside.
    I will most likely start a thread when I jump into HH.
    Right now I'm just stocking up on parts supplies . . .
    . . . I can hardly wait, as HH looks like fun, very different from my EMs and DMD pins

    Cool, yeah Marco has made some changes to his initial ROMs to slow down led blinks -- tests are more advanced, documentation is more descriptive of what's happening. I've updated the page with a summary of Marco's ROM tests at the bottom of this page: http://www.pinitech.com/products/gottlieb_universaltester.php

    I'm going to add the main ROM as an option for purchase (separately) as well.

    I think you should find you have an easier time with the Marco ROMs. Leon's were a bit confusing and basic, they were a great start obviously and helped me worth through a few boards.. but I'm sure Marco's will get you to identifying the issues much quicker.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #73 3 years ago
    Quoted from fast_in_muskoka:

    I am attempting to purchase one of these testers with EPROM and instead of adding it to my cart, I get a paypal error.
    If I select without EPROM the web site has no problem adding it to the cart
    any Ideas ?

    Sorry about that, should be fixed. Paypal doesn't like quotes in their item names, and yet they allow you to use quotes when you create shopping cart items.

    Quoted from fast_in_muskoka:

    Also, with the G-P-E tester that may be ready for sale soon, what's that puppie all about ( it looks pretty fancy ) ?

    I'm not sure where Ed is at with his tester, maybe he can respond here. He's a busy guy.. I'm sure the parts sales keep him *very busy* through the year & I think he still has a day job at this point so his boards take a back-seat at times. Anyway it looked very promising that his tester would be out last year (in terms of what it has said on his website) but still says that it's in the testing phases. Hopefully it will be out soon as it does have more bells and whistles and I'm sure many people would still buy it even if they've built one of these testers with Marco's ROM.

    I really wanted one of Ed's testers over the years, but they have never been available for me to purchase one. Needed to figure out some System 80 boards which are very difficult to diagnose without any kind of test ROM or led blinks, so I saw Leon's write-up and figured if I could make a small board that was plug-and-play and could run his ROM that would at least allow me to do some basic testing of Sys80 MPUs I had laying around. Then I found out about Marco's eprom and the rest is history.

    Anyway here's hoping Ed's testers make there way out here soon He's got some great aftermarket boards he offers too that are mostly out of stock. I'm sure it's a time/priority thing right now.

    BTW.. I actually have a Haunted House and some other Sys80 games to figure out myself. I'm excited to use all this new stuff I built to actually make quick headway with project games this year! Funny after building all this stuff, I really haven't had a great chance to use it. Hopefully in 2016!

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    #79 3 years ago
    Quoted from G-P-E:

    The problem is - getting time to work on this. Only an hour per week - if I'm luckly. That is why progress has been so slow with this.

    We all need some clones That or more time or less projects haha

    Looking forward to your tester once it's ready Ed! Keep up the great work!

    #88 3 years ago
    Quoted from 80spit:

    This Test rom looks great, recently bought the assembled board from Pinitech, is the Marco v33 rom image available for download or
    purchase, I really would like to have one

    Both, if you have an Eprom programmer you can PM Marco for the test rom. Eproms are also now available for purchase on my website now as well. Proceeds from eprom sales will go to directly to Marco as donations for his awesome work!

    #90 3 years ago

    Well, all good things must come to an end..

    I'm no longer sharing this project on Oshpark & have to rethink that whole method of delivery of shared boards as they've now changed a few things about shared designs that I'm not liking (mainly allowing *anyone* to download all the Gerber files and order boards in mass whereas it used to be that all that was hidden & you just had the option of ordering a handful of boards). Not really digging their changes.

    The good news is, I'll be offering bare boards & kits via the website. This should all help encourage ROM sales, which can feed back to Marco for his excellent work & mean possible updates to code and/or instructions as time goes on.

    ---
    http://www.pinitech.com - "Pinball Inspired Technology"
    Kits, upgrades and test equipment for pinball machines

    1 month later
    #94 3 years ago
    Quoted from cfh:

    Also is there a website that has board designs already done for various pinball projects? where you can design your own boards, or use existing board designs... and they'll make the boards for you (usually in like lots of 5)?

    Not sure exactly if this is what you're asking, but as far as just creating your own boards OSHPARK is great for small prototype runs of smaller boards. The key is staying below a certain board size, otherwise it starts becoming more cost effective to seek out other options.

    #96 3 years ago
    Quoted from CactusJack:

    I doubt you would be seeing the end result be "free for the taking" but at prototype and design phase, many people have offered up inexpensive bare boards and discounts for being a beta tester.

    Yep, that's what I do.. discounts on the things that could use some beta testing. Then different price ranges when I list it for sale (diy kits and fully assembled) to offer options to people that otherwise wouldn't want to pay the "assembled" price.

    I do know the stuff I send out looks professional as I can make it.. and to my own standards of how I'd want to receive something -- headers at 90 degree angles, components lined, flux cleaned off. Yeah a lot of it's test equipment, but it people should get something that looks as good or better than the photos IMO. That takes some time and adds to the costs. I could offer lower assembled prices by just assembly-line slapping components on boards and not cleaning flux off anything.. but it's not the kind of thing I want to be sending out. The diy option offers people the ability to build something to their own standards. I figure that's a good balance.

    1 year later
    #98 2 years ago

    A bit late, but I got in some more parts for about a dozen of these boards. So if anyone's still interested in picking one up -- send me a PM. It may still be a while before I get them available on the website again.

    3 weeks later
    #99 2 years ago

    More of these available again on the website. Have 10x assembled & ready-to-ship right now.

    http://www.pinitech.com/products/gottlieb_universaltester.php

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