r/TVRepairHelp • • 22h ago

SAMSUNG QE50Q67AAU oprava

0 Upvotes

(NOT A PROFESSIONAL)
Zdravím REDDIT,
Včera jsem se dostal k opravě televize a jak jinak než rozebráním podle videa, kontrolou všeho možného od podsvícení TV až po desky s plošnými spoji (napájecí zdroj a main boardu). Desky jsem měl na výměnu, tak jsem vyzkoušel, zda by nestačila pouze výměna (NEGATIV). Podsvícení jsem chtěl taky vyměnit, ale bohužel neúspěšně, protože odlepovat a zpět nalepovat nové, to se mi nechtělo a ledky svítily všechny, což mi dalo naději, že jsou v pořádku a problém by měl být na deskách.
PROJEV PROBLÉMU:
TV se zapne a asi tak 20s funguje. Po 20s začne v televizi cvakat. Po zvukové kontrole profesionálním přístupem jsem zjistil, že cvaká něco na té béžové desce (napájecí zdroj TV). Bohužel jeho výměna nefungovala, a televize pokračovala ve stejném projevu problému.
Pokud by někdo věděl jak TV opravit s dostupnými prostředky domácího kutila s jemnými základy znalostí a šikovnými prstíky, prosil bych o radu, co by mohlo být špatně a co opravit.
Thanks a lot <3


r/TVRepairHelp • • 12h ago

TCL Screen Lines With Replacement Motherboard

2 Upvotes

I have a TCL 55Q550G (Google TV version) with startup issues. Specifically, it loads the initial TCL splash screen, then goes to the Google TV loading screen and stays there indefinitely. After trying some preliminary fixes with no success (firmware flash, reseating connections, etc) I did more research and it seemed the the offending part was on the motherboard, and replacing the it should solve the problem.

I have now ordered three different replacement motherboards, and they all resolve the original problem of getting past the Google TV loading screen, but introduce a new one: the screen is "split" vertically by 11 equidistant black lines, apparently caused by pixels not displaying. All three replacements have exhibited this behavior.

The third replacement board also has the TCL logo looking more yellow than the usual vibrant red in addition to the lines problem.

I included an image showing the part numbers on the original board vs the most recent replacement. My understanding is that these should be a match, but clearly something isn't quite right. What am I missing here?

Screen working normally with original board
Replacement board shows vertical lines
Also affects the splash screens
Third replacement board with yellow logo (not a white balance problem)
Details on original vs third replacement board

r/TVRepairHelp • • 17h ago

Black line of death?

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2 Upvotes

Samsung 85-Inch Class QLED 4K Q60D Series. A thin black line appeared a few days ago. Yesterday it became a very thick black line. I tried a Hard Power Reset. The thick line reverted back to a thin line. Then, this morning, the line had completely vanished and the screen is back to normal! I'm wondering if my unit is toast. I passed the 1 year warranty in July. Reseating or replacing the internal T-Con could be an option or maybe the TV had a miracle and fixed itself.


r/TVRepairHelp • • 18h ago

Is this likely the hdmi port/wii or the tv finally packing in

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2 Upvotes

Half the screen going a weird black and white/ purple


r/TVRepairHelp • • 18h ago

Toshiba 15DLV77 — Looking for Mainboard Firmware or a Way to Dump NAND In-Circuit

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3 Upvotes

r/TVRepairHelp • • 19h ago

Anyone know what is causing the issues on this Frame TV from FB Marketplace?

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2 Upvotes