[TechAssist] Re: Magnavox PTV775 No Power Up

  • From: "Dave Huston" <DaveHuston@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sun, 8 Sep 2002 10:32:12 -0400

Peter,
Flyback is a common fault on these. Also you can disconnect HV lead going to
focus block. This should narrow the problem to a reduced area. If you find
the problem is prior to the focus block and unable to locate faulty
component on the large signal (deflection) panel, I normally send the panel
to Tri-State for rebuilding. Cost is much less than Philips and saves me
time.
Dave Huston
Huston TV & Electronics
Marion, Ohio 43302
DaveHuston@xxxxxxxxxxxx
(740) 389-5726 voice & fax.
----- Original Message -----
From: <pwblakeman@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, September 08, 2002 12:29 AM
Subject: [TechAssist] Magnavox PTV775 No Power Up


>
> This Magnavox PTV775 is not coming on. I checked all fuses, the horiz out
> transistor, the switching power supply FET, and all fuses. There is a
> pulse of voltage on the collector of the horizontal out transistor when
> the power button is pressed. Any common problems with this set? I don't
> have a schematic.
> TIA,
>
> Peter Blakeman
>
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