Arcade Collecting > Restorations & repair

Crackington Centipede Restoration Project

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rchadd:
connected up the game board and tested the voltages

here are the readings

test point = reading
+5V = 5.10
+22V = 25.6
-22V = -25.9
-15V = -15.0
-30V = -26.8
-5V = -5.17
+12V = 12.32

not sure if these are ok (within acceptable range)

havent connected up to a monitor yet so unable to figure out if it is working ok

SuperGunGuru:
You could try to tweak some of those adjustments to get them closer. The -30 that's only a -26.8 on your machine may be ok. Those numbers kinda bother me but I'm sure someone else will know for sure.

babydickonboard:
looks like your psu and boards could use a bit of a cleaning, and i would try to get the voltages as close as possible to what there supposed to be with a load on the psu.

HoopstarsGarage:
Those readings (under load) don't seem to bad but I would, as matter of course, replace all the electrolytic caps on the PSU board as they most likely be dried out by now..

The most important voltage is the +5 volt rail which can be adjusted via AR2.

rchadd:
Ripped out the jamma wiring/psu that was installed in the machine by previous owner.

Fitted the transformer, PSU and Game boards. Started to rewire using 100% complete wiring loom.

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