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MY telly wont

The set decided for some reason known only to itself, to shut down.  The screen is dead, with just a red standby light on it, the remote has absolutely no effect on the set which is making a ticking sound.  I've tried unplugging the set from the mains but that has no effect whatsoever.  What can I do to get this blasted machine working again?

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Hello Haplorhine:

It sounds like there is a problem with you power supply or the small signal board, it should be taken to a repair center.

Posted on Aug 19, 2008

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What caused it to shut down?


Probably abrupt power supply failure

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My Hitachi L42VC04UB replaced a failed power board .The television comes on and after a short time it shuts down and the standby light in the front of the television flashes blue and red .This happe


Well either the TV's main (or other) board overloads the power board and it shuts itself off or the power board itself shuts itself off for whatever reason or the main board shuts off for whatever reason.

With the setup you have I'd say it's probably going to be difficult to figure out which one it is.

You will want to have yet another board - either main or power - to eliminate one of the two most likely possibilities.

What did you do with the original power board?

If you keep it you can probably send it to us for repair....or if it's cheap enough just buy another one.

i don't think there's an easier and affordable way to narrow it down than using a third board.

www.coppelltvrepair.com

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I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.5_30_2012_2_44_54_pm.jpg5_30_2012_2_45_11_pm.jpg

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Is there anything power signal lights?If there is no signal power lights,it is totaly dead set no power.First step is to check the power outlet,then the AC cord if there's a ac power.If the AC cord is good,check the fuse,located at the power supply.Replace same value of fuse if busted.Try this sugestion or procedure.Thankss...

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The light flickers because the power source has detected a failure and has shut itself down. Nothing more you can do, the tv must be repaired by a pro.

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Power supply board is dead.Replaced the power supply board will solved this problems.Tries websites Shopjimmy.com,Ebay.com for a refurbish power supply board for the replacement.

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