Recent content by riddler

Mine is set on Parity, ID Select 2, Prevent/Allow

How do I tell if the V101 is set wrong? I see it on the board. It is a square blue pot with a white adjustment. I have never messed with it but I bought the game broken. Somebody before me could have messed with it. What about the red annode wire? What do I do with that while testing? Should it...

Hello Ohmerone, I just want to make sure I have this right before testing the cap. You want me to change the cap to a 470UF 50V instead of the 470UF 35V that is in there. Leave the vertical IC out and plug the chassis into AC Power. Measure DC voltage on positive lead of C125 the 470UF 50V.

I replaced C125 and removed the vertical ic. I applied 12 volts to the positive side of cap C125 while I had my meter on the 12 volt line and ground. My meter stayed at a constant 12.23 with no fluxuation. The cap did not burn up either. How do I check C122 & C124 are shorted? Do I do that on...

Yes the cap is being installed correctly. I matched the black dot to negative on the cap. I also checked my other chassis to make sure that the board marking was correct and the cap was installed correctly. I did remove D118 & D119 to check them. They tested .467 on one and the other .455. I...

I checked both diodes and they tested good. I was not sure how to test these caps so I had another Hanterex Polo 25 donor chassis that I removed these two caps from and soldered into my problem board. I repaced the 470UF 35V electrolytic cap and put the chassis back in. I fired it up and after...

Checking to see if cap is shorted I don't mean to sound like an idiot but how do you check those caps on a digital multi meter. I am using a Cen-Tech P37772 multi meter which has a capitance section labeled 20u, 2u, 200n, 20n, and 2n. The capacitor is marked 101J 1 K-V KCK Thanks for your help

I have a Hantarex Polo 25 that continously blows C125 470UF 35V cap. The monitor will turn on and I can hear high voltage but within 10 seconds the cap blows. Anybody know what is causing this and what should be replaced?

I have The Simpsons Bowling arcade game. It seems to play fine. I had a problem with the SCSI 50 Pin cd rom drive and replaced it with another cd rom drive. The problem I am having now is if you let it sit idle without playing it for about 14 minutes the screen will turn blue and stay that way...

I did the same thing yesterday on my 4 board set. Did you ever get it running? If so what parts did you replace? Also do you know where the lm324 op amp is for the digital sound. I just need the location on the sound board. None of my chips are marked Lm324.

Thanks Buffett for the info. I replaced all of the electrolytic caps on the sound board for the one that had the weird jump sound. Success it sounded great. I do say sounded beacause I played Donkey Kong for several hours and the sound was great. I did notice that the screen looked like it was...

Everybody does not half to post all at once.

Bump for the weekend crew

Hello, I have two sound boards both off the 4 board cocktail pcb set with different sound issues. The first one all sounds are good except for the jump sound is real weird. I have read that if it is a 2 board set that wiggling capacitor c24 47UF if the sound changes it might tell you if it is...

What is the model # of the 4900 monitor? I am looking for a med res 4915.