[TechAssist] Re: PTV340 Magnavox - has sound but no pic ???
- From: "Dan Garris" <dgarris@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 21 Mar 2005 22:34:55 -0500
Sorry Cliff, but I already saw this tip. Thanks for the reply however
something is loading down R446 and causing the resistor to burn open. I
don't have a schematic. Thanks anyhow.
Garris TV
New Bern, NC
dgarris@xxxxxxxxxxx
>From: Cliff Afflick <sgt.cliff@xxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: PTV340 Magnavox - has sound but no pic ???
>Date: Mon, 21 Mar 2005 19:58:10 -0700
>
>Open Connection On Deflection Board From Flyback To Collector Of Q505
>----- Original Message -----
>From: "Dan Garris" <dgarris@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, March 21, 2005 4:08 PM
>Subject: [TechAssist] PTV340 Magnavox - has sound but no pic ???
>
>
> > What: 46" Big Screen TV
> > Make: Magnavox
> > Model: RK8530 AK07
> > Chassis: PTV340
> > Made: June 1990
> >
> > Problem: Has sound but no Picture.
> >
> >
> > I found R446 0.47 ohm 1w resistor was open on the large power supply
> > panel.
> > I replaced the resistor and brought voltage up slowly on my Sencore
>PR-57
> > Variac and the Set began drawing extremely high current and R446 was
> > getting
> > hot so I shut the power to the set off.
> >
> > I do not have a schematic on this set. Can someone upload a schematic
>for
> > this Chassis to our members area or to my e-mail address, or has anyone
> > seen
> > this R446 resistor open up before on this common PTV340 Chassis. I
> > searched
> > my many tips and Google and found nothing. Any help appreciated. This
>Big
> > Screen tv belongs to a Local Church youth group and they need it back by
> > friday and I was trying to help the youth group out.
> >
> > Garris Radio & TV
> > Dan Garris
> > New Bern, NC
> > dgarris@xxxxxxxxxxx
> > Ph: (252) 638-4477
> >
> >
> >
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