(Topic ID: 146522)

TSPP speaker hum/buzz *Fixed*

By sed6

6 years ago


Topic Heartbeat

Topic Stats

  • 86 posts
  • 45 Pinsiders participating
  • Latest reply 63 days ago by Pin_Fandango
  • Topic is favorited by 87 Pinsiders

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tspp mod schematic (resized).jpg
tspp resistor install (resized).jpg
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There are 86 posts in this topic. You are on page 1 of 2.
14
#1 6 years ago

Lots of speaker hum threads here and none seem to show a good fix. My TSPP has been humming in attract mode since day one. Of course it's not noticible during play, but when the room's quite the hum or buzz drives me nuts. Some reading here and some googlefoo lead to to RGP where there are several fixes, some dating back 12-13 years. I went with the adjustable pot mod and this completely eliminated my speaker hum. Check out the vid below for how I did it and the see (hear) the results.

#2 6 years ago

Nicely done video. I was actually expecting a 20 second video of you beating on the transformer

This was really informative. I love those little test probe clips.... I use them all the time.
faz

#3 6 years ago

I am going to try this...Thanks!!!

#4 6 years ago

Very nice. Wonder if this can be done on data east machines like my jurassic park.

#5 6 years ago

Thanks! Dunno. Here's the two main sources I drew my info from. You might need to view the desktop version of the google one if you're on a mobile device to get to the thread instead of a search window.

http://thepaisleys.azurewebsites.net/paisleypinball/monopoly/eliminate_backbox_hum_and_buzz.htm

https://groups.google.com/forum/#!searchin/rec.games.pinball/tspp$20speaker$20pot/rec.games.pinball/RiqCixRjptI/c3jTUzOgqdYJ

#7 6 years ago

Nice Fix!!

#8 6 years ago

OT question, but in the video I noticed that you have "welcome to Scott's arcade" message on you dmd.

Ive never done that before but decided to try on my met last night. I found two places in the menu that allows u to type in a message. But then when I went back to attract mode the message never displayed. Any tips? Am I missing a step? I'd like to do that to all 3 of my pins before I have family over for Christmas.

#9 6 years ago

First you need to go to your adjustments menu then standard adjustments then number 41 is custom message on or off. Make sure that set to ON. Then back out and go to utilities. From there go to utilities and choose ABCD custom message and then enter your message. Choose END to save it. Then back out and it should be saved.

#10 6 years ago

Thanks!

#11 6 years ago

Excellent tutorial. Thanks for putting this together.

#12 6 years ago

Cool, thanx for posting, having the same problem with my tspp, just noticed it last night.

#13 6 years ago

Great mod.

1 week later
#14 6 years ago

Thx! I've already shipped one or two pairs. I have parts to make a few more if anyone wants.

#15 6 years ago

I picked one of these up from SED6 and........ GOLDEN SILENCE..... so freakin happy not to hear that buzz/hum any longer I too have heard it for the last 12/13 years. He shipped as soon as payment cleared, no problems at all stayed in contact with me the whole time also. In my opinion very reasonably priced also!!

Thank you for a quick, easy solution!!

You rock SED6!! Happy New Year!!

#16 6 years ago

Thanks for posting that!

#17 6 years ago

PM sent.

#18 6 years ago

As advertised!

I built a set as Scott (sed6) demonstrated and they worked great! The ability to adjust backbox and cabinet speakers individually is a bonus. (R106 is backbox and R110 is cabinet)

I still have a bit of transformer hum, but that's been lessened by good beating.

https://pinside.com/pinball/forum/topic/noisy-humming-transformer et al.

#19 6 years ago

PM sent

1 week later
#20 6 years ago

Thanks for the feedback guys! Glad these are working out for everyone. I've had more interest than anticipated and have some more parts on the way. They are $10/pr shipped. PM if interested and I'll give you my paypal address. I have two pairs shipping today and the rest will ship next week. Here's the list so far:

homer714-1pr-paid-shipped
robotronx-1pr-paid-shipped
dredd1977-1pr-paid shipped
strohz-1pr-paid-shipped
nerbflong-2pr-paid-shipped
jalkelly-1pr-paid-shipped
MJW-1pr-paid-shipped

Let me know if I missed anyone.

2 weeks later
#21 6 years ago

Installed these on T3 this week and it really quieted things down. A big plus is you can adjust the backbox speakers volume separate from the cabinet... So those with a subwoofer it helps add some more punch to the sound. RED mode rules! Thump Thump!

Thanks for putting these together!

#22 6 years ago

Glad you like! Everyone else work okay? One member in Italy is reporting it not working. Perhaps it has to do with 240 voltage?

#23 6 years ago

240v should not be an issue. I would wager he's hearing transformer hum rather than audio hum.

#24 6 years ago

How about on mine ? Listen with headphones.

4 months later
#25 5 years ago

I picked up a TSPP a few weeks ago and saw this thread doing some upgrade/mod research. Of course I noticed the hum worse once I read that it bothered others! I had to keep the sound level to about 2. I made a set for each resistor and was able to keep the sound level to about 13 with no noticeable buzz. Thanks for the tutorial.

#26 5 years ago

Awesome, glad I could help. I've had a few recent requests for some, but I'm out of parts and really don't want to make more. I got the 10k ohm adjustable pots and IC clip hooks off Amazon if someone wants to make their own, or make some for others.

Screenshot_2016-06-17-01-41-09_(resized).png

Screenshot_2016-06-17-01-41-41_(resized).png

#27 5 years ago

Anyone have experience trying these for Data East hum?

2 weeks later
#28 5 years ago

sed6, Thanks for the info! The hum on TSPP bothers me, so I just ordered up enough to fix up 5 games. I suppose 4 people could convince me to make them a set...

1 week later
#29 5 years ago

sed6, thanks so much for the info on this fix! I only recently taught myself to solder, and this seemed like an excellent first project (beyond the handful of kits I've tried.)

The actual creation of these went pretty well, and I used my DMM to confirm they were set correctly, but I'm running into an unexpected issue. The resistor (resistor? Right? I'm still learning this stuff...) at R106 is soldered onto the board in such a way that I can't get both of the clips on. A picture would explain it better, but basically, the resistor isn't centered, so on one side there's plenty of room to clip it on using the hook, but on the other there's none. The resistor is basically flush with the board.

What can I do about this? Is clipping both hooks on the same side a bad idea? If so, it seems like the only other thing I could do is try to desolder and resolder that resistor to the board. I am extremely hesitant to even consider that, given my noobishness.

#30 5 years ago

Clipping on the same side would not work. You could solder a wire to the side of the resistor that you can't clip on to.

#31 5 years ago

Follow the trace the resistor is soldered to, you might be able to clip it to the next component. Don't try this unless you're sure you understand what you're doing, maybe find somebody local who can help.

5 months later
#32 5 years ago

Happy New Year Pinsiders! I've had some additional requests for these and have decided to make up some more. I'm going to list them on eBay primarily because I've missed several IM or email requests (sorry guys) and eBay won't let that happen.

Edit-auction has ended.

Screenshot_20170112-021448 (resized).jpg

#33 5 years ago
Quoted from sed6:

Happy New Year Pinsiders! I've had some additional requests for these and have decided to make up some more. I'm going to list them on eBay primarily because I've missed several IM or email requests (sorry guys) and eBay won't let that happen. You can search for the listing ID of 201781503771 or if that ever expires my user ID of sed*6 (yes that's an asterisk).

I'm interested in buying one, do you have instructions for install and what's involved? Any soldering or is it basically plug and play. I'm fine soldering, just want to know what to expect.

#34 5 years ago

I'll be buying a set right now. Thanks!!

Lermods, check out video in post #1... the answers to your questions and more are explained there.

#36 5 years ago
Quoted from Pinzap:

I'll be buying a set right now. Thanks!!
lermods, check out video in post #1... the answers to your questions and more are explained there.

Order received, thx! Indeed, I made the video pretty self explanatory. In fact when I soldered up a set last night I kinda forgot how I made them so I referred back to my video!

#37 5 years ago

Sed, you should consider putting them up in the pinside mod marketplace too! I made a set from your video instructions and the fix works well.

#38 5 years ago
Quoted from sed6:

Order received, thx! Indeed, I made the video pretty self explanatory. In fact when I soldered up a set last night I kinda forgot how I made them so I referred back to my video!

Hi, just watched the video, but it's hard to see exactly where the connection is made. Which resistors is it hooked to? Does it matter which clip is on which side of the resistor? Thx

Maybe a close up shot of the connection would be helpful to me and others.

#39 5 years ago

They connect to R106 and R110, and one leg on each side of the same resistor. So one will clip on the left and right of R106 and one will clip on the left and right side of R110, but no it doesn't matter which side of the pot resistor is on which side of the board resistor. Probably best to connect them while the game is off/unplugged and make sure you get a solid connection without shorting to any other components. The little hooks on the spring connectors eject when you push on the back and you can hook them around the board resistor legs and they clamp on pretty good. Once installed hum will be gone and you'll need to turn up the volume a little on the game.

#40 5 years ago

Pic of mine installed. You might not have the red board above, that's a PI-SIM.

IMG_1462 (resized).JPG

#41 5 years ago

Just received my set. installation was simple and quick. This is a must have for Tspp owners. The speaker buzz is gone and the quality of the sound greatly improved. sed6 was easy to work with.

#42 5 years ago
Quoted from mavantix:

Pic of mine installed. You might not have the red board above, that's a PI-SIM.

Perfect, thx!

#43 5 years ago

Set ordered. Thanks as I have the original Moe's Sign mod that still works and the hum is even worse when the sign blinks on and off

#44 5 years ago

Ordered!

#45 5 years ago

Thanks all. I have 5 more pairs that I'm shipping out today. They each come with instructions which mavantix pretty much covered above.

#46 5 years ago

Thanks a lot. I just ordered one.

#47 5 years ago

I got the connectors today, but my board, which is original from 2003 looks a little different. R110 is not at the top and is down below next to 106. Am I still good to make the connections. Just want to be sure since the instructions show a different picture.

20170120_143055 (resized).jpg

#48 5 years ago

I took a chance that it was the same r110 and r106 and it was. Amazing how quiet it is now. I modified my backbox with led strips and when they would fade in and out id get a terrible hum, same with my undercab lights. Its 100% quiet now...beautiful!

Took me a little while to get those clips on the resistors, i had to bend them out just a little to make the hook wider and easier to grab.

20170120_145519 (resized).jpg

#49 5 years ago

Glad that worked for you! Love the backbox lights, might steal your design!

#50 5 years ago

I would assume this works with an lotr? Has anyone needed/used this mod on it?

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