Question about Televison & Video
I dont know whats wrong with the tv, i turn it on and all i get is a Blank screen but the backlight still lights up, i get no sound from the speakers or any response to the buttons, so i was wondering if the mainboard has become faulty, ive replaced the inverter, lcd controller board, power supply board now im stumped. All the components are Vestel ones.
Motherboard is Vestel 17mb12-2
Whehn i unplug the Screen from the mainboard the backlight flickers, and when i connect it back in its back to square one, and the main chip on the mainboard is getting quite hot too.
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Posted on Jan 02, 2017
Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com
Posted on Apr 23, 2010
To solve this type of problem, you need a piece of white chalk. Draw a line around the area where the set is at. Call a priest - and lay the poor thing to rest!!!! This isn't the first time Samsung has "dropped" junk onto its' customers. Their dvd players also had problems with their DSP I.C.s that would over heat and cause the video playbacks to "break up". Don't waste any more time or money on the product!!!!!
Posted on May 18, 2010
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