[TechAssist] Re: PTV340 Magnavox - has sound but no pic ???
- From: Cliff Afflick <sgt.cliff@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 22 Mar 2005 10:18:59 -0700
Hi Dan
Your are welcome.
It seems to me that there is a dead shorts in the region of that resistor.
Happy hunting and quick repairs.
Cliff.
----- Original Message -----
From: "Dan Garris" <dgarris@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, March 21, 2005 8:34 PM
Subject: [TechAssist] Re: PTV340 Magnavox - has sound but no pic ???
> 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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