[TechAssist] Re: Magnavox 25TS52C303

Sounds like you've checked almost everything, I was about to suggest a new
str30130, but then I had to ask: Does that Tv even start up and provide some
load to the regulator?? Is it possible your Horiz out is not starting up?
----- Original Message -----
From: <tvdoctors@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 30, 2001 3:52 PM
Subject: [TechAssist] Re: Magnavox 25TS52C303


> Pin 3 of the regulator is around 15volts until I turn the set on, then
goes to 149-150volts. Pin 2 is 150 volts when set is on.
>
> > ** Original Subject: RE: [TechAssist] Re: Magnavox 25TS52C303
> > ** Original Sender: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> > ** Original Date: Fri, 30 Nov 2001 15:01:36 -0500 (EST)
>
> > ** Original Message follows...
>
> >
> > Have you replaced the 3.3uf 200v C431 yet? It is from R431 to ground off
pin
> > 2 of IC410. I recall seeing this cap causing no regulation in older sets
> > using the same regulator IC. Also check D420 connected between pins 4
and 2
> > of IC410. This chassis should come on with about 15v on the 130v source
in
> > standby, then go to 129v when turned on.
> > Jim Myers
> > jr.myers@xxxxxxxxxxx
> > ----- Original Message -----From: <tvdoctors@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, November 30, 2001 2:31 PM
> > Subject: [TechAssist] Magnavox 25TS52C303
> >
> >
> > > Chassis # 25X605    I'm perplexed on this one.  Set is not regulating.
It
> > comes on with B+ Voltage running at around 149 volts. I tried new and
used
> > STR30130 regulators (I heard about the bad new ones) and checked just
about
> > everything in the power supply. Can't get it to 130 volts. Any
suggestions,
> > Neil
> > >
> > >
> > > TV Doctors    108 W. Main St. Monroe,Wa. 98272    360-794-6469
> > >
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>
> >** --------- End Original Message ----------- **
>
> >
>
> TV Doctors    108 W. Main St. Monroe,Wa. 98272    360-794-6469
>
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