(Topic ID: 296098)

Game Resets after playing for a couple of minutes WHITESTAR RESET

By McPin54

30 days ago



Topic Stats

  • 7 posts
  • 3 Pinsiders participating
  • Latest reply 10 days ago by McPin54
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#1 30 days ago

I know this is a common issue with multiple possibilities and I've sifted through a lot of the forums.

I have narrowed it down to the driver board. I swapped out driver to a different game and no resets occur.
The game boots and plays as it should but after a few minutes the game will reset and continues to reset quicker than the initial reset.
I have reflowed solder on all pins. I have even replaced the header at J16.
Caps look good with no leaks or bulging....could this still be a cap issue?

Any help would be much appreciated.

Thank you in advance

#2 30 days ago
20210701_203832 (resized).jpg
#3 30 days ago

You need to test the 5 volts on the driver board. If low, it can be adjusted.

https://www.pinwiki.com/wiki/index.php?title=Sega/Stern_White_Star_Repair#Low_.2B5VDC_and_Game_Resets

#4 30 days ago

Thank you for the information.

I now can not get game to boot now. Issue Still on driver board. I tested with a good one

I tested voltage regulator on the heat sink and it checks out good.
I measured voltage at r114 and was getting over 6 volts....yikes!! I turned down the 5 voltage adjustment all the way down and I get about 5.9 to 6 volts...ugh. I can not get it lower and no boot

Bridges test good

Going to do some more digging on the link

2 weeks later
#5 11 days ago

Still looking for a little help on getting a driver board to boot here. I actually have 2 driver boards Im trying to bring back to life here. Ill call the one in this thread A and the other one B.

Since my last post I ordered 5v regulators that sit on top of the heat sink for both boards.

Board A still shows 5.7 Volts. I can not adjust R116 any lower to get it down.
Board B, I replaced 5v regulator and only get 1.3 volts at R114. The adjustment at R116 spins freely so I am assuming that needs replaced.

.... Where do I go from here on board A. Could this be a bad cap? All bridges measure GOOD. Shouldn't the game boot at 5.7v?

Thank you in advance

#6 10 days ago
Quoted from McPin54:

Shouldn't the game boot at 5.7v?

Yes.

The driver board will send a "reset" pulse back to the MPU if the lamp matrix isn't operating. The signal is called DRV0.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#7 10 days ago
Quoted from ChrisHibler:

Yes.
The driver board will send a "reset" pulse back to the MPU if the lamp matrix isn't operating. The signal is called DRV0.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

The game actually won't boot even getting 5.7v

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