Hi all,
My JP has been resetting, at first intermittently, and now all the time and can't play a full game. Checked the voltages on the power supply, and saw that the +5v and -12v are fine. But the +12v read +9.6v, so that seems significantly low. Is that the likely cause of the resets? In looking around, I found a hack to deal with a burnt CN1 connector in the top right. The wire from that pin was cut, and I see a wire coming off the back of the board and connected to what is likely the cut wire from CN1.

So, is the low +12v the likely cause of the resets? Could the hack be causing the low +12v? Is the burnt CN1 a sign that something else is wrong? And how do I get the resets to go away?

Here are pix of the connector and hack to show what I am talking about -

Thanks for any suggestions!

female_CN1.jpg

hack.jpg

male_CN1.jpg

TZCLOCKed - thanks for the link to the CN1 kit - exactly what I needed. I had the Date East link you suggested, but still could not figure out whether the CN1 was the likely culprit.

EZER - my sound is fine now. Before the reset issue, the sound would not come on for a bit after turning on the JP, and also adjusting the sound pot caused some static. I replaced the pot and the sound is fine now, but the resets remained.

PinballManiac40 - thanks for the confirmation, and the suggestion to replace the C2 cap.

I'll report back after I get CN1 fixed.

I finally got to replacing CN1 with the kit from Action Pinball. This was absolutely the problem. I no longer get resets and on the power supply, the +12v test point reads 11.26v. I have not changed C2 as was suggested, but will put this on the list of things to do.

As a note to anyone else in this situation, I am not experienced in soldering on the boards. I did get a junk board to practice on, and to remove the CN1 from the the board, I used a solder sucker at each connector to remove most of the solder, then used Chipquick to keep the remaining solder liquid while I gently removed each connector individually by twisting. I was not able to remove the entire piece at once, so this worked for me, and I did not rip out any through holes.

Thanks for everyone's suggestions. It is great to have the game back up again.