[TechAssist] Re: JVC AV-32F734 (YA version) NO picture/brightness. sound, HV vert defl. all OK
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 25 Feb 2005 11:59:08 -0500
Could be. Did he check the screen capacitor? Could be shorted tube too. I
had a Magnavox that had low screen voltage and I changed the socket , the
cap, and still was low. I took the board off sanded the front and back of
board and this fixed the problem. ???????????
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, February 25, 2005 11:07 AM
Subject: [TechAssist] Re: JVC AV-32F734 (YA version) NO picture/brightness.
sound, HV vert defl. all OK
> Well, he already put in a new OEM fly. But, I was thinking. What if
> something on the CRT board was shorting the G2 oroginally, this
> destroyed the internal resistive network in the fly, so G2 was lost. He
> replaces the fly, now the new fly's screen internal supply is being
> stressed, and has damaged the new fly's internal screen network. Only
> thing I can think of.
> Phil Bader
>
> al m wrote:
>
>>Maybe bad flyback?
>>Al Marquardt
>>ampm@xxxxxxx
>>Al Marquardt Electronic Repair
>>206 W Main
>>Girardville Pa. 17935
>>----- Original Message -----
>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Friday, February 25, 2005 9:56 AM
>>Subject: [TechAssist] JVC AV-32F734 (YA version) NO picture/brightness.
>>sound, HV vert defl. all OK
>>
>>
>>
>>
>>>Changed flyback already.
>>>Reason for no brightness (black tube) seems to be very low G2 screen to
>>>CRT board. On order of a hundred volts. Filaments lit OK.He removed G2
>>>wire completely and measured it with DC probe on a scope, so good
>>>isolation that shouldn't load it down. At wits end here.
>>>Need ideas.
>>>Phil Bader
>>>
>>>--
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>
>>>
>>>
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>>
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>
> --
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.300 / Virus Database: 266.4.0 - Release Date: 2/22/2005
>
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