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2 Television graphical glitch, power cycles, ultra-slowness
Bought this TV used. Big mistake; it was misrepresented. Model UN55MU6300FXCZ television
Anyway, the thing has EXTREME slowness (as in, 5-25 seconds to register a single menu command), and that is only when it turns on properly. Has problems with graphical glitches (Colours/lines/squares that in a PC would be associated with GPU failure), often power cycles/completely crashes.
Complete factory reset of system had mixed results. First one resulted in the same situation. Second reset made the thing almost usable. Third one, only boots to graphical glitches; cannot access menu.
My knowledge of TVs is limited (have extensive computer knowledge though). To me, this sounds like a mainboard problem.
Is this a mainboard problem? Is it reasonable to attempt a repair on this TV? Are there guides/tips/things I ought to know?
crwdns2934109:0crwdne2934109:0
2,4crwdns2936485:0crwdne2936485:0 
@duckmcquack verify your TV model for us. Yes, most likely it will be the main board but it can also be the panel. Clarify this "only when it turns on properly. " a bit better.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
@oldturkey03 Thanks for the detailed response. I haven't done TV repair before, so if I may ask, are there any particular resources/things I should know? And where I might find schematics or breakdowns?
And, how can I diagnose a TCON board vs a main board?
crwdns2934271:0crwdnd2934271:0 TuringGear crwdne2934271:0
@oldturkey03 Yeesh, talk about my bad luck. Oh well. Maybe I should just say goodbye to that $160 I spent and stop throwing good money after bad.
crwdns2934271:0crwdnd2934271:0 TuringGear crwdne2934271:0
@duckmcquack looks like your TV has only the power and main board (That means T-con is on the main board. Without proper schematic it's all a guess. The integrated boards are harder to diagnose since they packed so many components on it and are starting to non longer use reference designators for test points or components. IF you would have a separate T-con board, you would measure the different voltage that the T-con board produces to supply to the LCD driver boards and ultimately the panel.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
@oldturkey03 Good to know. Thanks for the time and detailed information.
Do you have a model number on that main board? I live in a different country than the USA (Canada), so it is possible I could still check the price elsewhere.
Still, losing $160USD (200CAD) as a fresh college graduate sucks. Oh well
crwdns2934271:0crwdnd2934271:0 TuringGear crwdne2934271:0
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