kevdig at hypersurf.com
Fri Apr 2 17:35:14 EST 2004
I replaced three of the caps using jumpers (the power supply filter cap
a capacitor in the voltage booster circuit (c513), and a coupling cap
to vert osc. (c509)). None helped. The DC voltage on the vert driver
output pin ((pin 6
on I.C 601, the sync processor ic) is off: reading about 6. Should be
0.9. The DC
voltage on the vert deflection ic input pin (4) is also wrong: reading
The little picture of the vertical output says it should be 35v p-p. I
about 22v p-p. The raster only covers the upper 2/3 or so off the
screen. This makes
me suspect the "voltage booster" in the vert. deflection ic?
Stan Blazejewski wrote:
> Neither of those components would be faulty. I would suspect any
> electrolytic capacitors associated with those though (won't be more
> that 3 or 4 caps), just replace them all & make sure the polarity is
> correct!!. I'll lay odds that will fix your problem.
> Australia isn't "down under", it's "off to one side"!
> stanblaz at netspace.net.au
> www.cobracat.com (home of the Australian Cobra Catamaran)
> Coco mailing list
> Coco at maltedmedia.com
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