Author Topic: Someone was having a bad day... (Read 1422 times)

Grauwulf · « **on:** March 10, 2005, 10:37:16 pm »

when they were working on some of the G07 chassis I'm repairing right now. Somoene wired up the voltage regulator backwards on this one and put power to it. I replaced it with a known good regulator and I'm still seeing 150v for the B+ voltage. I have removed x701 and the monitor powers up, and I have replaced C511 and still have 150v B+. What else could have been damaged by the VR being wired backwards? I have looked at the schematics and it looks like potentially x901 or x902 could have gotten toasted.

Any suggestions?

Ken Layton · « **Reply #1 on:** March 11, 2005, 12:20:41 am »

That fuse resistor FR901 is probably open. I have seen both those X9xx transistors go bad. Sometimes you need to sub two known good ones to test.


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Author Topic: Someone was having a bad day... (Read 1422 times)

Grauwulf

Someone was having a bad day...

Ken Layton

Re: Someone was having a bad day...