(Topic ID: 192115)

Stern Lightning (no power)

By GorfFan

2 years ago

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  • 10 posts
  • 3 Pinsiders participating
  • Latest reply 2 years ago by GorfFan
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#1 2 years ago

I connected everything up and there is no power. The on switch is very loose but it is flipping over to the on position. Also the board below is the only board on the game with a burn mark. I'm not familiar with working on, well anything electrical, but what can I check to find the power issue?

20170625_211922 (resized).jpg

#3 2 years ago

Whoa! I know a guy named Cody! What are the odds of meeting another one?

#5 2 years ago
Quoted from cody_chunn:

Set your meter to 200VDC. Connect black to ground and probe the TEST POINTS at the top of the board. Is voltage present on any of them?

The only vote present is in test point 3, which 53.7 DC/mV.

#6 2 years ago

there does seem to be power coming into th on switch, because i checked the connections inside the cabinet by touching MM to the on switch connectors.

#8 2 years ago
Quoted from frunch:

Did you check the power switch for continuity with your DMM?

Power has been fixed to power supply, through transformer, to displays. The CPU is beeping 7 times with all displays except one. I've resoldered all pins on all displays, but the problem is:
Player 1 solid 7 in third space then 5 in 6th space of score board
Player 2 (top right score) has a solid 5 in space one.
Player 3 (bottom left) makes the CPU only beep 5 times, so it's defective.
Player 4 (bottom right) has a wavy, slightly unclear :3: in space two, but bottom part of "3" is missing.
Diagnotics and credit display has a wavy "17" in far right last 2 slots. The waviness to the letters are they alternate left and then right by the "1" is brighter and then the "7" gets nighter while the "1" gets dimmer.

Any suggestions on how to fix these issues, so I can run a diagnostic check on the game?

#10 2 years ago
Quoted from frunch:

If you haven't already, I'd probably reflow the solder to the header pins where the display wiring hooks up to the mpu board. May also want to replace the female connectors there as well.

Already reflowed header pins, but not female connectors. Thanks.

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