[TechAssist] Re: JVC AV-36980 Loud Squeel
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 2 Dec 2004 22:06:00 -0500
Still doing battle with this one?
The squeal come from the power supply ...correct?
Is the STR regulator getting rippin' hot?
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd
----- Original Message -----
From: "Tim Poole" <tdp13158@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, December 02, 2004 7:46 PM
Subject: [TechAssist] Re: JVC AV-36980 Loud Squeel
> Thanks Eric,
>
> Yes this cap has been replaced as well as the regulator. Set had both bad,
> but after replacing them both the set powers up but has a loud squeel and
> shuts down after playing a few minutes. I checked all diodes and caps but
> cant go any further without a print. Thanks, Tim
>
> Tim Poole tdp13158@xxxxxxxxxxx
> dba A-Mobile TV Shop & Precision TV Service
> Fredericktown, Ohio 43019
>
> 419-756-3443
> 740-694-8585
> fax 740-694-1032
> ----- Original Message -----
> From: <tvman@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, December 02, 2004 1:08 PM
> Subject: [TechAssist] Re: JVC AV-36980 Loud Squeel
>
>
>> Hi Tim make sure you replace this cap in the power supply it may be
>> leaking
>> fluid
>> on the board..Eric
>> AV36980 DEAD NO CLICK C926 1000-35V
>> E M Electronics
>> Deer Lake NL
>> Canada
>> tvman@xxxxxxxxxxxxxxx
>> eric.manuel@xxxxxxxxx
>> ----- Original Message -----
>> From: "Tim Poole" <tdp13158@xxxxxxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Thursday, December 02, 2004 2:07 PM
>> Subject: [TechAssist] Re: JVC AV-36980 Loud Squeel
>>
>>
>>> Do you have a print of the power supply you or someone could send me? I
>> have
>>> replaced the regulator with another one and checked all diodes with no
>>> success. Any help would be greatly appreciated. Thanks, Tim
>>>
>>> Tim Poole tdp13158@xxxxxxxxxxx
>>> dba A-Mobile TV Shop & Precision TV Service
>>> Fredericktown, Ohio 43019
>>>
>>> 419-756-3443
>>> 740-694-8585
>>> fax 740-694-1032
>>> ----- Original Message -----
>>> From: "Shoreline Electronics" <jstielau@xxxxxxxx>
>>> To: <techassist@xxxxxxxxxxxxx>
>>> Sent: Tuesday, November 16, 2004 9:09 AM
>>> Subject: [TechAssist] Re: JVC AV-36980 Loud Squeel
>>>
>>>
>>> > You didn't take the chassis? Tsk tsk.....
>>> >
>>> > In the primary of the smps , check ALL diodes. I had one of these a
>>> > few
>>> > months back but didn't make note of the location...you will find one
>>> > in
>>> > there that is shorted/leaky. Your STR should be OK.
>>> >
>>> > ==========================
>>> > Jeff Stielau
>>> > Shoreline Electronics Repair
>>> > 344 East Main Street
>>> > Clinton,CT 06413
>>> > 860-399-1861
>>> > 860-664-3535 (fax)
>>> > jstielau@xxxxxxxx
>>> > ========================
>>> > "If you push something hard enough it will fall over."
>>> > Fudd's First Law of Opposition - Sir Sidney Fudd
>>> >
>>> >
>>> > ----- Original Message -----
>>> > From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
>>> > To: <techassist@xxxxxxxxxxxxx>
>>> > Sent: Wednesday, December 15, 2004 6:22 PM
>>> > Subject: [TechAssist] Re: JVC AV-36980 Loud Squeel
>>> >
>>> >
>>> >> Not sure if this is the same problem? From:
>>> >> http://wa6ati.com/Jvc.html
>>> >>
>>> >> "Customer complains of an intermittent "whistle" or high pitch squeal
>>> >> noise coming from the set. This procedure is not on the JVC website
>>> >> as
>>> >> of now, but is provided by JVC Field Support. This noise problem may
>>> >> be
>>> >> caused by the focus element in the CRT. To verify the problem,
>>> >> disconnect the H-Pulse going to CN00Q on the DAF (Dynamic Auto Focus)
>>> >> and test the unit for an extended time. Note: the corner focus will
>>> >> not
>>> >> be as clear with this line disconnected. Change C2701 on the DAF
>>> >> board
>>> >> to a .27uf/50v Mylar capacitor, (JVC part # QFV71HJ-274). Changing
>>> >> the
>>> >> value of this capacitor lowers the amplitude of the horizontal pulse
>>> >> going to the DAF circuit. After replacing this capacitor, focus
>> touch-up
>>> >> is necessary. This should solve the squeal problem."
>>> >>
>>> >> David Lessard
>>> >> Alexandria, Ontario. Canada
>>> >> mr_fixit@xxxxxxxxxxxx
>>> >>
>>> >> -----Original Message-----
>>> >> From: techassist-bounce@xxxxxxxxxxxxx
>>> >> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Tim Poole
>>> >> Sent: Tuesday, November 16, 2004 4:00 AM
>>> >> To: techassist@xxxxxxxxxxxxx
>>> >> Subject: [TechAssist] JVC AV-36980 Loud Squeel
>>> >>
>>> >> I replace the STRF6626 regulator and electrolytic cap in power supply
>>> >> and set now comes on with loud squeel and then shuts down after
>>> >> several
>>> >> minutes of operation. Set will then come back on when unpluged and
>>> >> then
>>> >> pluged back in after it cools down. Anyone seen this? I may have a
>>> >> bad
>>> >> new regulator but wanted to check before I went back out to the
>>> >> customers house to replace it. Thanks, Tim
>>> >> Tim Poole pooletim@xxxxxxxxxxx tdp13158@xxxxxxxxxxx
>>> >> dba A-Mobile TV Shop & Precision TV Service
>>> >> 17626 Shady Lane
>>> >> Fredericktown, Ohio 43019
>>> >>
>>> >> 419-756-3443
>>> >> 740-694-8585
>>> >> fax 740-694-1032
>>> >>
>>>
>>>> ------------------------------------------------------------------------
>>> >> -----
>>> >> Lost Password:
>>> >> http://www.tech-assist.org and select "Login Problems?".
>>> >> Email Archives:
>>> >> //www.freelists.org/archives/techassist/
>>> >>
>>> >>
>>>
>>>> -------------------------------------------------------------------------
>> ----
>>> >> Lost Password:
>>> >> http://www.tech-assist.org and select "Login Problems?".
>>> >> Email Archives:
>>> >> //www.freelists.org/archives/techassist/
>>> >
>>> >
>>>
>>> --------------------------------------------------------------------------
>> ---
>>> > Lost Password:
>>> > http://www.tech-assist.org and select "Login Problems?".
>>> > Email Archives:
>>> > //www.freelists.org/archives/techassist/
>>> >
>>> >
>>>
>>>
>>>
>>> --------------------------------------------------------------------------
>> ---
>>> Lost Password:
>>> http://www.tech-assist.org and select "Login Problems?".
>>> Email Archives:
>>> //www.freelists.org/archives/techassist/
>>
>>
>> -----------------------------------------------------------------------------
>> Lost Password:
>> http://www.tech-assist.org and select "Login Problems?".
>> Email Archives:
>> //www.freelists.org/archives/techassist/
>>
>>
>
>
>
> -----------------------------------------------------------------------------
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
