QBert player 1/2 stopped working

SpamManMarc

Member
Joined
Aug 10, 2012
Messages
168
Reaction score
14
Location
Ohio
I was wondering if anyone has run into the player 1 and 2 select buttons just stop sorking.
They worked one night and stopped working in the morning. I haven't had time to start checking it for power or anything other than trying to jump the switch and that didn't work.
Any quick thoughts where to start before I actually start testing??
 
Look for burnt connector on the filter board.

as well as any wires that will get pinched in the doors, coin door, controll panel. It is most likely a ground wire and you can verify this by grounding the switch, form just about any ground. If it works with external ground you do have a ground problem or connection. If it doesn't you might have a compoent fault< less likely but possible.
 
Got the 2 player to work, but the 1 player isn't getting power. Found no power at the plug.
I did find burnt connectors on the board, BUT they were old and were already repaired with splices. Checked over the splices and they were actually done well and not bad.
Is there a schematic somewhere for Q*Bert or someone know where to go next? If I had a schematic at lest I would know where to start checking.
 
on your filter board? Did you look at p11 pin #5 is the player one button. it goes through the filter board an goes to p4 pin #6

The player one button data line is now labeled X

It goes through a Pull up resistor 4.7K SIP2
It goes through R15.
b14 is a 74ls240 Pin #4.

I would look at the back of the filter board first.
 
Finally want to get back on here and thank you guys. It wasn't the pins, it was the actual wire contact in tge connector. Thanks again.
 
Thanks for getting back to us.

While I do not know which connector was your problem so this advice might apply to your problem.

Sometimes connectors get corrosion on them and you should clean them up. It does not take a lot of time but it does make a game last longer..
 
The pins and connector themselves were clean with no corrosion. I pulled both connectors and checked the pins and they were good. So I did like I would with a car--the wiggle test.
I wiggled the wires where they make their connection and everything started working. I'm just glad it works.
 
The pins and connector themselves were clean with no corrosion. I pulled both connectors and checked the pins and they were good. So I did like I would with a car--the wiggle test.
I wiggled the wires where they make their connection and everything started working. I'm just glad it works.

You have cracked solder joints, the problem will return.
 
Back
Top Bottom