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|    sci.electronics.repair    |    Fixing electronic equipment    |    124,925 messages    |
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|    Message 123,489 of 124,925    |
|    three_jeeps to All    |
|    Advice sought: Diagnosing & Repair of Sa    |
|    24 Feb 23 09:30:56    |
      From: jjhudak@gmail.com              This TV is showing all the signs of a TCON or TAB failure. The RHS of the       screen exhibits a combination of various issues: ghosting images, duplicated       images, solarized sections on the screen, what looks like 'interlaced lines'       on portions of the RHS,        and darkened areas. Initially, the problems would clear themselves after the       TV was on for 2-3 min, then the time got longer, e.g. 20 mins. Now it is       constant.       I removed the back and cleaned & reseated the 4 flex ribbon cables at the TCON       board which did not solve the problem. The ribbon cables go off to the LCD       screen which I could not access.        It appears that I have to disassemble more of the TV to access the TAB areas.       (not obvious what all needs to be disassembled - comments?)              Assuming I get access to the TAB areas, how to repair them? Googling turns up       putting a padded 'shim' between the TAB and the frame, effectively pressing       the contacts together. Another approach is to use a hot air gun and pressure       to rebond it. Not        clear what to use to put pressure on the entire length of the TAB area.       So my questions are:       1 - ways to diagnose the problem       2 - how to disassemble the set to access the TAB area       3 - best way to repair the TAB if in fact that is the problem       Any advice from ppl that have wrestled with the set is appreciated.       J              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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