[Coco] Magnavox monitor

[Neil Morrison]

The power supply is not working properly and thus the lock on
circuitry doesn't fire. This may be a Cyclops design where one
horizontal output transistor not only drives the horizontal but is
also the chopper/regulator for the DC power supply. These are
notoriously nasty to service.

Neil

----- Original Message ----- 
From: "Boisy G. Pitre" <boisy at boisypitre.com>


> Marty (and all the others who bothered to reply),
>
> Thanks for taking time to help with this problem.
>
> I was incorrect about something, and have to revise the description
of
> the problem slightly.  It has been some months since I tried it to
turn
> the monitor on, and I actually hooked it up a while ago.  Here's
what
> actually happens:
>
> When I press the power switch on the back of the monitor, I hear
the
> high pitch wine, but as soon as I let the switch go, the whine
stops.
> However, the front panel green LED (which indicates power on) NEVER
> comes on.
...