(Topic ID: 257553)
Bossier City, LA
Actually it's the lower LEFT connector on the MPU (specifically to the top 4 pins) that needs checked (not lower right as stated above).
Also the Middle Right connector on the solenoid driver board (it's the smaller of the two right side SDB connectors).
as a quick test, pull those two connectors and just run some worn out or 400 grit sand paper across the male pins. Re-installed the connectors and re-boot. Tell us if things have changed...
Also under the playfield (assuming playfield lifted and on prop rod) at the upper left is the solenoid expander board. remove that board and check for cracked male solder joints on the board. also make sure the 555 lamp, right next to the board, is good
The outhole is controlled by the solenoid expander Board. Check to make sure it’s working. Put the game in lamp test and see if the lamp under the playfield and the expander relay are going on and off. You can hear the relay clicking if it’s workin.
Quoted from jj44114:Put the game in lamp test and see if the lamp under the playfield and the expander relay are going on and off.
Wow, I didn't notice until you said this, but none of my controlled lamps are working either. related?
Quoted from cfh:as a quick test, pull those two connectors and just run some worn out or 400 grit sand paper across the male pins. Re-installed the connectors and re-boot. Tell us if things have changed...
nothing changed after this.
If the controlled lamps aren’t working then the solenoid expander isn’t working. That’s why DT 1 is activated instead of the outhole.
if none of the controlled lamps are working, it's for sure a fuse or fuse clip issue. if the fuse blows again, might be the bridge rectifier. it's a simple circuit. transfomer to rectifier board through bridge to playfield cpu controlled buss line (6 volts.)
Quoted from cfh:if none of the controlled lamps are working, it's for sure a fuse or fuse clip issue. if the fuse blows again, might be the bridge rectifier.
Thanks for the help so far, everyone!
I tested all the fuses and they are all good. Tested the fuse clips for continuity with the good fuses in them too. They test fine. I have a new altek MPU in the game too. Bridge rectifier tests good as well.
Check if you have 5 volts on the lamp driver. I I think it’s test point 1 or 2. Ground TP is marked on the board
I would just test the 6 volts power buss on the bottom of the playfield. it's the naked wire that travels to each cpu controlled light. with your dmm set to dc volts, black dmm lead to ground, red lead on that buss wire... you should get 6 volts. if you don't, you have either a bad fuse (or i guess bad bridge), or a bad connector.
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