I just tested my Bally Embryon rectifier board a few days ago so I can relate. First are those all DC voltages ? On mine some test points are DC and some AC. If you were measuring AC voltage with the meter set to DC the readings will be off.

The bridges can fail eventually. The transformer is much less likely to fail.

If you need a system 1 power board I have a spare with the updated caps on it I can send. Just pay for the shipping

Do you have the schematic for the Power PCB or the system schematics for System 1?

69 vac is coming from the main transformer terminals 8 and 9 and is protected by a 1/4 amp fuse.
you should be able to find this looking at the main AC and DC distribution board in the bottom of the cabinet. the 69 VAC wires run to connector A2J2-6 and A2J1-7.

Also Rottendog sells a replacement PCB for $75.

Ultimately your best bet is to just get a Pascal All in One PCB and be done with it.

As long as your contacts in the various connectors are clean or changed out and your AC and DC voltages are correct coming from the Main Ac / DC transformer board, the Pascal is the way to go.

Can't visualize it right now. I will look at my boards tonight and see if I can remember everything when I was troubleshooting hulk. I remember testing all of those pins per clays guides.

Never got an answer. Makes troubleshooting easier

Not sure what a com 3 wire is

TYPO: It should read the 69 VAC wires run to connector A2J1-6 and A2J1-7.

_{Post edited by pdman : TYPO}

69VAC between A2J1-6 & A2J17. Red on one, Black on the other. The 34volts you got on each to ground before is reasonable & you probably have 69volts where you need it.

If/when you measure the DC outputs of the board, A2P3-1 & A2P3-3,measure against the ground on A2P3-5. Measure the other two voltages on A2P3 (pins 7 & 8 ) as well as the voltages on A2P2 (pins 1/2 & 6) against the ground on A2P2 (pins 4/5)

Are you having issues with the game not working or are you doing clays suggested per start up tests?

Ground mods need to be done. Have you defeated the slam switch. Clay's System 1 guide will explain. Do you have the Guide?

Is the 5 VDC low when not connected to the CPU PCB or only when connected to the CPU PCB. Do you have any external power supplies, bench supply , old PC supply?
If so you could use an external supply to power up the CPU PCB to see if it boots up.

I always check a system 1 with only the displays connected to the CPU see if it boots up or not. Then I attach the driver PCB. I use a stock Gottlieb CPU for most of my testing then when done use a Pascal.

Another nifty PCB that l I got was an eprom with jumpers that can be used in all System 1 games.
You just set the jumpers for each particular Pin. I don't think he sells them anymore.

This page shows how to test a System 1 CPU on the bench. It uses a LED connected to one of the display lines to see if the CPU will boot.
http://home.scarlet.be/~nb010944/syscpu/esyscpu.htm

For a PS you can use a PC supply. Find the 5VDC, -12VDC and Ground and connect them to the CPU PCB either with clip leads or make a connector.

The Main site testing page in English is here
http://home.scarlet.be/~leonb1/eindex.html

and here is the Main Main page
http://www.flipper-pinball-fan.be/

Yes it is but I don't think he sells them anymore. He does sell a Blank PCB to make your own but you will need the Eprom and I'm not sure if He supplys them or you have to burn your own. I believe it has something to do with violating the Gottlieb owners Rom code

http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply

here's a google search for converting a PC PS into a test bench PS.
You really don't need to go to this length but it will give you ideas.

https://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&q=make+a+bench+test+power+supply+from+a+computer+power+supply&oq=make+a+bench+test+power+supply+from+a+computer+power+supply&aq=f&aqi=&aql=&gs_nf=1&gs_l=serp.3...58612.81279.0.81503.59.58.0.3.3.0.635.7258.31j16j5j1j0j2.55.0.T_1sU3k8Poo

Good luck way2wyrd - Gottlieb System 1's can be a bitch to get working. Be prepared to rebuild ALL the connectors. And for this, I recommend getting new connector housings from Great Plains Electronics. Don't waste you time trying to use a pin remover tool to save a 0.29 part. Trust me on that...

WINNER!! You will LOVE IT!! ....remember this exchange we had?

way2wyrd said:

So how do you like that pascal board

I *LOVE* it~!~! It adds a TON to the gameplay! I've just downed 6 beers and played Genie all night long. She's far from perfect (yet), but I just put the new rubbers on and got to play with her for the first time. (hehehe)

Regarding the new Pascal board - It adds a TON (or you can stay with stock), there's a new new skill shot, you can get more than one extra ball, there's an attract mode between games, it handles millions scoring, there's a 2nd chance for quickly drained balls (shot again light flashes for about 5 seconds), animated messages for some game events, ability to customize bonus scoring (including increasing the max bonus per ball from 29 thousand to 39 thousand), special and extra ball playfield lights flash, ability to save 5 high scores with player names or initials, credits for 2nd to 5th high scores, tilt warning ('DANGER' flashes in all displays after 1st tilt), customize some rules, power saving modes, etc.....

I'm a happy camper right now.

Big +1 on that pascal. Best mod for any game. Makes the game so much better. All those features pluses GREAT diagnostics,kills power to any locked on coils. Checks all switches every time the machine starts up. Pascal did a great job with these and is well worth what he charges.

+++ for Janin Pascal and major Kudos to the Ni-Wumph Guys as well for pioneering the CPU replacement PCB. I remember talking to a respected Pinball tech in the late 80's. He was absolutely sure that no one would save the System 1 games from the junk yard. Well they were saved as we all know.