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Golf Golf is offline
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Posts: 103
Default Update: Pioneer PRO97 powerdown problem

After verifying vertical def signal and retrace were good, looked into
the power down circuit for loss of vertical. Found a pad lifted at
Q-211 collector. Read 4.5V at Vdef test pin, but nothing at collector
of Q-211. Anyway power down repaired. Now, with set powered up, I get
a picture, although misconverged now (mainly on the right portion of
the sceen). Also noticed that when cycling through the different video
inputs, the OSD font color for each changes. CH3 is green, Vid1 is
green, Vid2 is green, Vid3 is red and blue (misconverged), LD is blue.
Not sure if this happened after replacing the vertical deflection IC,
but hoping this is normal. I was working on navigating through the
convergence adjustment procedure when a resistor blew in the power
supply. Also noticed the coax input doesn't give a picture (black
raster) when connected to my Sencore (trying to display crosshatch).
This is all for now. Will post another update when I make further
progress - don't hold your breath!