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Horizontal display the horizontal display of my aoc color monitor will not adjust even i adjusted it to 0% or to 100%...t

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To replace TIP122 at near by LOT.
Check any dry point of DMV32 or DMV1500(Damper diode).
Check flayback capcitor and boosting FET 634.

Posted on Oct 07, 2008

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If you are using windows XP :

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Hi,

Appreciate the "Ask Me".

I am assuming that you have more than just familiarity with electronic components and circuitry, the use of a DVM and a soldering iron. Further, that you have access to a service manual.

Width problem is basically insufficient horizontal deflection, then analysis would have to be in the horizontal section. Areas to initially focus on:
  1. 12V line and pin 29 of IC401;
  2. 110 V peak to peak at collector of Q403, if yes check Q 402 & 404 as well as T401;
  3. other components that affect the horizontal size are:
  • IC201
  • Q 405, 406, 407 & 408;
  • D409
  • L401
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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