Question about LG 42LC2D 42 in. LCD HDTV

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How do i change a power supply i have already had it diagnosed

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Buy a service manual
Several places online sell them

Posted on Nov 05, 2010


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My farenheat fu54 heater just stopped working. Power to it is fine any suggestions on how to diagnose the problem

you said it has power, is it before or after the wire from the fuse you have checked, check the power wire that goes after the fuse. the fuse may need to replace, and if all is good and still does not work. check also the thermal cutout, This device protects the unit from overheating, it may already faulty (it may be always in off if its already faulty), here's other to look for , power supply, heating element, Power switches, thermo couple(if any), sensors..

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My samsung wont turn on already replace power supply cap

If it does not turn on despite power supply change, it has to be the main board responsible if you get power led on.

Dec 22, 2013 | Samsung Televison & Video

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Polaroid TV will not power up. Light goes on but no picture. Replaced the power supply and it still does not work.

OK jeank1,

If you already replace the power supply board but still the problem persisted you..

Also we are looking for the possibility that the power board is not compatible to your unit or it is defective one..If you know how to use multi meter I teach you how to do the simple voltage data check to diagnose where is the fault came from..

Just go to this link.
and choose any of my services to assist you..


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1 Answer

Replacing power supply main

your best bet is to check owneres manual and keep with what they suggest however when ordering you may want to ask for tech support to see what they say but i would stick with what you had especially if it worked great that way you dont want to overpower your tv if that is what it was used to ..if it ain't broke don't fix it i hope that helps

May 14, 2009 | Philips 42FD9932 42 in. Plasma Television

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Main Power Board

The power supply board can be changed without any knowledge of repair but there are sometimes adjustments necessary if the picture is not normal. Many times it is fine. There a 4-5 voltage adjustments that would take some knowledge and a meter to accomplish. You need to hope it was diagnosed properly first. If it is completely dead the p.s is a good possibility. If it clicks on then back off almost immediately it is not likely the power supply.

Jun 02, 2008 | Gateway GTW-P42M102 Television

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Power supply malfunction?

Remove the battery and try the cord again. Complete with the moving it around. It sounds like you have already diagnosed the loose DC plug adaptor, but the battery could have gone terminal.

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1 Answer

Encore subwoofer not getting any power

Might be a power supply for the amp. Are you handy with a VOM? You can check the power supply output pretty easily. If not, some local electronics repair guys will diagnose / estimate repairs for free .. especially if you already have the unit apart (just did that very thing myself). Then you can make the choice of repair / replace.

Good luck.

Feb 26, 2008 | Energry Speakers Energy Speakers Encore 8...

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Motherboard problem

The mother board is bad. there is only two things that keep it from running. the power box or the monther board. most of the time it's both.

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