[TechAssist] Re: Philips Magnavox TS2746C221, 27F800 7583 horiz. instability (jagged pic.) "Shhh" in audio, shuts down
- From: "becyn" <becyn@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 11 May 2004 14:17:55 -0400
The newer philips stuff has too many shutdown parameters! For instance, the
G2 is a critical parameter which will cause your symptom. vereify that it
is set somewhere in the 375 to 400v range. Too low or too high will shut the
set off! Sometime the the fbt pot is flakey, which requires the FBT to get
changed.
Happy hunting...
Jim McVey
McVey Alltronix
327 Broadway
Newburgh Ny 12550
ph: 845 561 8383
fx: 845 561 9017
Consumer electronics &
computer service.
Factory authorized for
over twenty brands.
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 11, 2004 1:34 PM
Subject: [TechAssist] Philips Magnavox TS2746C221, 27F800 7583 horiz.
instability (jagged pic.) "Shhh" in audio, shuts down
> Sorry for long subject line,but that's it.
> Customer complaint was "shuts off after it warms up".
> Went over the underside, found no bad solder, rapped and tapped while
> on, no change.
> It has a full picture with a horizontal jagged "piecrusting" around all
> images, along with a "Shhhhh" noise in with the audio, like an audio IF
> misalignment. I think I see a very slight overall intermittant size and
> brightness fluctuation, and after ten minutes or so it just shuts off.
> Cannot turn back on unless cord unplugged for a moment.
> I changed the known issue, scan cap #2463 (680pF@ 2KV) with no help. I
> freeze sprayed around but nothing definate.
> Vert IC has good solder (this isn't vertical symptom anyway)
> Need input here guys!
> 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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