Hello everybody,
Finally had all my games up and running good, then Ms Pac Man had a case or two where the monitor cut out. It quit for good recently, and now I'm on a mission to repair it.
A prior owner had obviously had the monitor in the Ms Pac Man replaced. The monitor is dated 1997, and of course is a later model.
Fuse is good, and line voltage is entering the board.
I have a question about the bridge rectifier diode. I can measure 123 vac coming into the bridge. The output side in DC appears to be 85vdc (pin 1 +, 3-). Does this sound correct?
I'm testing it with the degaus wire loop disconnected, as it's hard to test the board with the short cable length.
I do not see high voltage DC on the neck board transistors or input cable, and there is no neck glow.
WG has troubleshooting dox and lots of info online given that it's a "modern" model. Diode D16 is supposed to have 127.1vdc on it according to the typical voltages (I have no input signal though), and reads .27vdc on mine.
Any thoughts?
There is no static sound or whine or anything. Dead. I'm just not sure if the bridge should be 1:1 on voltage.
Finally had all my games up and running good, then Ms Pac Man had a case or two where the monitor cut out. It quit for good recently, and now I'm on a mission to repair it.
A prior owner had obviously had the monitor in the Ms Pac Man replaced. The monitor is dated 1997, and of course is a later model.
Fuse is good, and line voltage is entering the board.
I have a question about the bridge rectifier diode. I can measure 123 vac coming into the bridge. The output side in DC appears to be 85vdc (pin 1 +, 3-). Does this sound correct?
I'm testing it with the degaus wire loop disconnected, as it's hard to test the board with the short cable length.
I do not see high voltage DC on the neck board transistors or input cable, and there is no neck glow.
WG has troubleshooting dox and lots of info online given that it's a "modern" model. Diode D16 is supposed to have 127.1vdc on it according to the typical voltages (I have no input signal though), and reads .27vdc on mine.
Any thoughts?
There is no static sound or whine or anything. Dead. I'm just not sure if the bridge should be 1:1 on voltage.