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 أعطال وصيانة تليفزيون-Repair-TV-AVEST

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عدد المساهمات : 2369
تاريخ التسجيل : 16/06/2010
العمر : 56

مُساهمةموضوع: أعطال وصيانة تليفزيون-Repair-TV-AVEST   الجمعة يوليو 08, 2011 10:58 pm



Avest 54TTS-01 From time to time does not turn on when it was brought to me
two weeks, he turned on and worked fine. A lot of time spent on it. The power
supply does not emit any stress, no duty was not a working mode. Was defective
S514 0.1 microfarads.

AVEST 54TTS-01
composition: LC863328A, LA76810, LA7840, LA4285
When viewing the program through the RF antenna, there is no color in SECAM, by
changing the subject * vomits * image, a cold start the first 5-10 minutes of
no horizontal sync. And the words of a client failure has progressed slowly.
First started to blink color, then pick an image and finally disappeared
horizontal synchronization. This immediately led me to think about the failure
of the capacitor. However, after an all-out test, podkidki, replacing
electrolytes and clay * * was a faulty video LA76810






AVEST 72TTS-02
Photos of the chassis and structure: [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]
From the words of his host: turn off, everything was fine, but after the image
of dance and move.
Include, but not synchronize, OSD is normal, but it is clear that the
"cushion". While the thought of where to start, and saw coils L403
discharge from the radiator. In addition, it was welded crooked and barely did
not touch it. Next to her, found almost vypadyvayuschy resistor R446. It is
well warmed and formed around the ring cracks. Eliminated. All the rest was
pretty banal. Apparently clicked more than once. Flew option for the correction
of DPS and DPC, as well as in options HAFC was 03 instead of 00. Put, TV
earned.

AVEST 54TTS-03
Ingredients: TCLA19V-03 TDA7057 (ULF)
Trouble was no sound, and sometimes the sound would appear briefly
("ryavknut"). Was guilty of the capacitor C-418 47mkF 16V (output
IC401 9V).




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أعطال وصيانة تليفزيون-Repair-TV-AVEST
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