(Topic ID: 172654)

J102 pin 1 voltage (WPC)

By pinballkyle

7 years ago



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#1 7 years ago

Hey there, none of my flashers work on Funhouse. No voltage getting to them. Bridge and cap new. Fuse fine.

Tested j102 pin 1 which supply's voltage to the bridge and I get 0.5 volts.

I believe this wire come direct from the Transformer.

I tested continuity from the transformer to this connector and it's good.

I assume my problem lies with the transformer? Any advise? Thanks

#2 7 years ago

If it comes from the transformer (and I haven't looked at the schematic) it will be AC volts.

Was your meter set to read AC volts?

Also, the AC will not be referenced with one side to ground so you need to measure ACROSS the two AC wires.

#3 7 years ago

Is LED5 lit on the driver board with the coin door closed?

Input AC voltage should be measured @ J102 pin 1 to pin 3.

#4 7 years ago

FIXED! I was overthinking the problem, which can be the case sometimes.

Firstly I wasn't reading the AC correctly, once I did, indeed I verified the voltages were correctly coming into the board.

I thought I checked all the traces from the bridge when I pulled the board, but one was broken, and there lied the culprit. Once the trace was fixed, the 20v came on...but only 4 flashers came up! Then came another issue on J107 where one of the wires was not seated correctly in the housing. Once repaired, all is well now. Thank you Cody_Chunn and Homepin for your advise steering me in the right direction!!!

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