[TechAssist] fix Philips Magnavox TS2746C221, 27F800 7583 horiz.instability (jagged pic.) "Shhh" in audio, shuts down
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 13 May 2004 11:14:03 -0400
After changing the H. drive transistor, ESr'd caps, changed the known
scan cap issue (680pf), and a few other parts and still symptom remained,
I then installed a new flyback #312813820941 and trouble cleared. No
jagged horizontal piecrusting and clear sound.
I assume the fly was arcing internally and this was thecause of the
picture interference, as well as the "hash"getting thru the scan derived
power sources and into the supplied sound circuits..
Phil Bader
Phil Bader wrote:
>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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