gmontag
Member
I'm having a lot of trouble with the HV section of this monitor. R901 and R907 burnt up. I installed a cap kit and HV kit from Ian Kellog which replaced:
-caps
-all transistors
-diodes
-zener diodes
-most resistors
-555 IC
Still when I power up, R901 and R907 start to smoke and I get no HV. Seems like a short, but what should I check next? I didn't measure any shorts between the flyback terminals in circuit. I've triple checked Q900 and Q906 against frame shorts. The originals tested fine, but I replaced them anyway.
P.S. R928 measures 33K ohms instead of 56K ohms. Could that be it? My reading of old threads says no.
EDIT: Image added
-caps
-all transistors
-diodes
-zener diodes
-most resistors
-555 IC
Still when I power up, R901 and R907 start to smoke and I get no HV. Seems like a short, but what should I check next? I didn't measure any shorts between the flyback terminals in circuit. I've triple checked Q900 and Q906 against frame shorts. The originals tested fine, but I replaced them anyway.
P.S. R928 measures 33K ohms instead of 56K ohms. Could that be it? My reading of old threads says no.
EDIT: Image added
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