Black Matrix
Well-known member
Paperboy ARIII: What voltage should the negative sense test point have on it?
Hey all,
Just rebuilt an AR-III for a paperboy that was having some resets. After getting the PS back it, it started resetting a bit more. I pushed around some on various chips. Cleaned some crusty connectors on the AR-III and lower PCB. Now, I'm getting nothing but garbage. Won't boot, and won't go into test mode. Tested all the voltages I could and the only one that appears to be missing is the -sense. Does the negative sense voltage control a watchdog circuit. It may just need all the sockets/connectors cleaned or it could have a serious PCB problem now. But I'm hoping its fine and just a weird PS problem. The other voltages actually zeroed in pretty close. Anyone have any insights or places to start. Thanks in advance.
Hey all,
Just rebuilt an AR-III for a paperboy that was having some resets. After getting the PS back it, it started resetting a bit more. I pushed around some on various chips. Cleaned some crusty connectors on the AR-III and lower PCB. Now, I'm getting nothing but garbage. Won't boot, and won't go into test mode. Tested all the voltages I could and the only one that appears to be missing is the -sense. Does the negative sense voltage control a watchdog circuit. It may just need all the sockets/connectors cleaned or it could have a serious PCB problem now. But I'm hoping its fine and just a weird PS problem. The other voltages actually zeroed in pretty close. Anyone have any insights or places to start. Thanks in advance.