• Grundig 22-2830T - Brak zasilania matrycy

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Grundig 22-2830T - Brak zasilania matrycy

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
  5. It is only permitted to describe one faulty device per single topic - you should always open a new topic for each subsequent device.
  6. Requesting of the full schematics, BoardView files, BIOS files or any other kind of documentation is NOT ALLOWED in this subforum. If you need to ask for any of these, you should open a new topic in DOCUMENTATION/BIOS REQUEST subforum.
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 Grundig 22-2830T - Brak zasilania matrycy

by mariners • 15 January 2015, 15:43
Witam, mam telewizor Grundig 22-2830T który miał problem z podświetleniem matrycy (gasło po 2-3 sekundach), okazały się winne temu kondensatory, które wymieniłem.
Jednak po wymianie mam teraz podświetlenie matrycy jednak brak treści, zauważyłem że brak na gnieździe LVDS napięć uruchamiających matryce.

Prosiłbym o możliwość wskazania gdzie szukać problemu.

Widnieje napięcie 1,1v 3v 5v i 12v, wychodzące z płytki od elektroniki inwertera.

Re: Grundig 22-2830T - Brak zasilania matrycy

by Google Adsense [BOT] • 15 January 2015, 15:43

#2 Re: Grundig 22-2830T - Brak zasilania matrycy

by tellyman02 • 15 January 2015, 20:16
You are missing the 24V supply you need to check back light enable on connecter on power supply.this should be marked on pcb next to conecter

#3 Re: Grundig 22-2830T - Brak zasilania matrycy

by mariners • 22 January 2015, 16:36
czy ktoś się orientuje gdzie można i czy można kupić jeszcze płytę to tego TV XZT190R-3?

#4 Re: Grundig 22-2830T - Brak zasilania matrycy

by grisza69 • 22 January 2015, 22:45
mariners wrote:czy ktoś się orientuje gdzie można i czy można kupić jeszcze płytę to tego TV XZT190R-3?


Takie coś ?:
Image

Brandowana przez Beko

#5 Re: Grundig 22-2830T - Brak zasilania matrycy

by mariners • 23 January 2015, 08:08
Tak taka płyta główna,

Image

Re: Grundig 22-2830T - Brak zasilania matrycy

by Google Adsense [BOT] • 23 January 2015, 08:08
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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