Repair service for power board B4K-50:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110646032176
As stated in the listing there please note that there are unique board components that are not replaceable...so depending on the failure there's always a risk that the board may not be recoverable.
I have the same set. Actually 2 of the same model. One fell and the screen is cracked. The other just went dead like everyones. About the fuses, how do I know if they are blown. I saw one and it is white. Is that normal or blown. I'm not familiar with these types of fuses. I've only seen the clear ones with the fuse that you can see clearly inside.
Also I was wondering for all of the people who has opened up their tv, did you guys notice anything with the big capacitors on the power boards? I believe there are 4 of them. The ones in my set looked like they got very hot and look like they are going to pop. The tops are popping up round. They are suppose to be flat. I may order the same capacitors and swap them out to see if it helps. Also since I have 2 of the same sets, I'm going to try to see if swapping the boards around will fix the one that didn't crack. I'll do some voltage and continuity checks on each set to see if they check out the same and maybe I can figure out what we need to change out. Since we all seem to have the same problem, it should help everyone out.
Ok i've swapped power supplies from the cracked tv to the one that went black. It worked for me. After replacing the power supplies, the display came back on. I'll swap out boards and do some testing to see where I can trace the problems.
I've traced the problem down to 2 capacitors. After changing them out on the bad PS with the good PS, the bad PS is now working. Screen came back on. I found that the VS voltage had dropped. It's should be around 90v and was only 68v.
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New here.. thanks.. I have the same issue as all of you . So the answer is get a new power supply board huh, or check the fuses..? The fuse is all white, so i cant seem to see if it's blown or not. it seems to be a 8ah250v fuse, the ones on the sides are 4ah250v.i'll go to Fry's and get some fuses, if doesnt fix, i'll replace the board. Please confirm?
Problem is with the power supply, you are getting power to the logic board and input board, but the main HV for the panal is dead. With the set unplugged, you can check the supply for any blown fuses.
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WHEN TELEVISION IS TURNED ON, THE L.E.D. FOR THE TELEVISION"ON INDICATOR" WILL FLASH RED FIVE TIMES AND THEN STAY OFF. THE DISPLAY ON THE MONITOR STAYS BLACK (OFF).THE STEPS I'VE TAKEN TO RECTIFY THE PROBLEM ARE, DISCONNECT ALL INPUTS/OUTPUTS, DISCONNECT INCOMMING POWER AND VERIFIED VOLTAGE- O.K.. TELEVISION DID NOT RETURN TO NORMAL OPERATION. NEED HELP PLEASE!!
I have exactly the same problem with my set. When I turn the set on the power button flashes red five times then goes blank; I have sound but no picture or access to the menu.
same problem as the others. TV was working great, then no picture. turned off then back on, indicater light blinks 5 times. Everybody seems to think it's a fuse or the power supply, but has anybody acutually got theirs repaired
Same problem... No picture and no sound. Power light blinks five times then stays out. Green light internally behind the digital input board keeps flashing. Where can I find a replacement power supply board?
Where do you get the capacitors? I have the exact same problem--no picture.
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