Arcade Collecting > Pinball
First pinball. cleaning the playfield. UPDATED: pictures added
shardian:
Don't know where you live, but if you have an Harbor Freight nearby you can get a nice digital Multi-meter for like 5 bucks. I have one and actually reach for it over my low end Fluke DMM.
The main things you want to check is continuity all of the fuses on the power board in the bottom of the cabinet, and then check your voltages at both connectors of the Power Supply. The process is quite straight forward for doing a pre-boot check of your game.
Also, pull your edge connectors and check for broken/corroded/flattened pins.
Lastly, where are your pics?
grbgemen:
yeah im going to go pick up a digital multi later today. if i was reading the one i was using last night correctly, it looks like the board is getting power but i didnt get much further. will work on it later.
and if i have time, i will get some pictures up. ;D
grbgemen:
a little update. bought a digital multi meter earlier today. started testing the CPU board. noticed right off the bad that the board was not getting +5 and -12 volts. so i checked the connector and it wasnt getting any voltage either. so at this point i thought i had a bad power supply. so i checked the AC voltage before the power supply and i had nothing. so it had to be under the play field. sure enough, one of the fuses was blown. actually there was the wrong fuse in the holder. i dug through all the fuses that were in the coin door and found a 1/4 amp fuse and popped it in. hit the power switch and the first thing i notice is all the score displays light up immediately(i eliminated the slam switches already) with zeros. however the displays flicker every few seconds.
the repair guide says to replace some parts on the power supply but im using a replacement supply. thoughts?
shardian:
If you are getting the correct voltages at the output connector of the power supply, then your power supply is working. What you just described is the slam switch symptoms. So you did the jumper mod on the CPU board?
If you have indeed done that (and double checked your work of course), then the only other thing I can think of is to check the coin door lockout wire to see if it is hung up on a coin switch.
Oh, and one last thing to double check which made me smack my head once I figured it out: There is a test plug on the cpu board that is essential to operation (of course). I had a board that was missing this and it would not boot. I stole one from a dead board and it worked like a charm. So, verify that this jumper plug is in place. You can see it near the top left in this picture.
grbgemen:
yes i did the slam switch jumper mod. it appears to be a good connection. displays power on right away with all zeros. unlike the 5 second delay.
im not sure what the coin door lockout wire is. there is 2 wires hanging off the back of my coin door that are connected to nothing. one is red while the other is brown with a green stripe.
and yes, the test plug is in place.
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