Like I said I got this Xenon for free, had no sound and intermittent solenoid issue. This is the first machine I’ve had that
needed real work, before it was just runner and lamps, so I’m really a novice at this, but do have general abilities.
I jumped in and worked on the solenoid issue, found a wire on J3 that didn’t look to be seated in the connector very
well, so I repunched it and the issue was gone, so I thought. Went on to the sound, had a local guy look at the cards
and he replaced 4 bad diodes and now I have sound, after adding a pot in the door, the door had been replaced and
there was no bracket or wires to the cabinet connector.
Anyway I started checking some lamps that wouldn’t light, got some fixed others still out. Found an odd voltage
on the ALD board TP2 which is ground, had 3.9 vdc, TP1 was fine, 5.3. I disconnected all connectors from the board,
putting each one back on one at a time and checking TP2. I got the same voltage with each connector. Also when I pulled the
connectors off I found J1-15 was burnt on the connector, going to A-5J4-11, ground which looks good the pin on the board didn’t
look bad. So I left the the connectors off, pulled the board to look it over, no obvious damage, I didn’t want to reconnect it so
I don’t have any more info on it than that.
Now that I have read quite a bit on this site I know I went about this all wrong, jumped into the middle, should have
checked all TP voltages and looked over every connector. I did check the boards for any burnt components.
a few days later I turned the machine on without the ALD board and started checking all the TP’s on the boards.
Power/Rec
TP1 8.13 vdc
TP2 192 vdc
TP3 15.11 vdc
TP4 7.49 vac
TP5 46.25 vdc
Reg/Sol
TP1 4.17 vdc
TP2 191.7 vdc
TP3 3.83 vdc *issue
TP4 258 vdc *issue?
TP5 11.68 vdc
TP6 3.87 vdc *issue
TP7 3.87 vdc *issue
Looks like I have a 5 vdc from the regulator?
MPU
TP1 5.26 vdc
TP2 15.52 vdc * issue?
TP3 21.5
TP4 Ground 0
TP5 5.27 vdc
TP6 13.63 vdc
TP7 Missed this one!
This was all I had time for so two days later I came back turned on the machine was getting ready to open the cabinet, the sound
got really low and choppy and some of the lights went out, I shut the machine off. I was looking around and found J3-10 on the
Reg/Sol board was burnt, not sure if it was like this before, but this goes to power board A2J3-5 5 v return, could be why the 5 vdc
on TP 3, 6 and 7 were so low? Anyway needless to say, I haven’t powered the machine back up since! Plans are to rebuild or replace
the Reg/Sol board. Any help would be greatly appreciated.