Arcade Collecting > Pinball
First pinball. cleaning the playfield. UPDATED: pictures added
shardian:
--- Quote from: grbgemen on June 11, 2008, 04:41:31 pm ---
tried wiggling the j5 and j6 connector. and the picture i posted earlier of the connector was the one right below the battery.
i just touched the red wire to the two yellows twisted together and the machine blew up...haha jk. there was a tiny connection spark. the sound chime dinged a little tune. i heard some clicks. quickly i glanced at the score board and saw some numbers other than zero displayed. and then that was it.
i tried to repeat the same thing but nothing.
--- End quote ---
Jim meant the small connector to the left of J5. That is the one that was under the original on-board battery and the one that gets the business end of battery damage.
The tones you heard was a coin credit. That is a good thing. The clicks you heard was probably the drop targets resetting.
grbgemen:
isnt the j6 connector to the left of j5 on the cpu board? or does he wanna see the board terminal where the connector connects?
in the last picture i posted above, the first three from the left have no continuity. i saw the first one flash blue while messing with them wires again. looks like im going to have to replace those. what are they and where can i get them? rat shack?
i have also noticed some random knocking. like i will power the machine on and a minute later i will hear the ball kick go off.
according to the guide, looks like they are:
1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). ratshack does carry those.
grbgemen:
well how about these pictures. first one is the back of the driver board. not sure if its supposed to be that way or not. other two are on the CPU.
grbgemen:
hmm i thought the pictures came out pretty clear. guess the last one was a little blurry on the left side. but i did have macro mode on.
i will see what i can do today.
also, what do you mean jam the reset relay closed? how?
shardian:
--- Quote from: grbgemen on June 12, 2008, 12:23:57 pm ---
also, what do you mean jam the reset relay closed? how?
--- End quote ---
I asked the same question once with a guy who had restored a Hulk pin. Here is what he replied:
It means to short the reset line to ground. It's temporary at the time of troubleshooting - if you leave reset at ground the chips heat up. It effectively bypasses the reset circuitry which is just a delay circuit.
The check is fairly simple for the reset circuit and is covered in the repair guide.
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