Blown Fuse on power supply's primary. I will try to replace it for the second time today, but I think it won't do any good and just blow again. Any help?
Unless you have electronics repair experience, you will need to replace the power supply. If you do have some repair experience, I would check for any shorted diodes, bridge rectifier, switching mosfet, or a cap on the primary side. Replacing the fuse will not solve your problem.
SOURCE: My LG Colour tv model no- RF-21FA20KV
go in touch with LG customer service....they will help u with ur problem
SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.
I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.
The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.
SOURCE: i have a LG PDP-42x30401 it has blown the 8Amp
Is this the main input fuse on the A.C. line? If that is the case then your regulator or rectifier section is shorted on your power supply board. The part number for the board on a LG TV will sometimes vary by the model version number that is located on the side or the back of the TV. Please take a moment to rate my answer. Thanks...
SOURCE: lg 42 plasma model 42pc3d-ud: had a really bad picture so
I Have An LG - 42PC3D-UD, When I Turn It On "It Have Sound And A Very Bad Picture.
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