Question about LG 42PC3D 42 in. Plasma Television
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Posted on Jan 02, 2017
SOURCE: TV will not power on
There is not an internal reset for this. You would need to check what voltages you are getting from the secondary side of the power supply, this would then indicate if the problem is with the main board not starting up the system or if the power supply has a fault. If you have a multimeter then you can carefully check for 24v 5v & 12v supplies. If you are not getting any voltages then the primary side of the power supply may be at fault. The first thing to check would be the fuse at the incoming mains supply on the power board, if this has blown then suspect one of the senmi-conductors & check to see if any of the capacitors are swoolen if so replace them.
Posted on Dec 08, 2009
SOURCE: Help with repair for LG 2055ST
Check the internal fuse. Unplug it, unscrew and take off the cover, the fuse should be easily found in the back by the power cord. I tlooks like a regular fuse but is white instead of clear glass because microwave fuses are special. You'll have to measure it with a meter as a result and be sure to replace it with the same kind. (try finding them at radio shack) Hopefully there isn't something more serious also.
Posted on Dec 31, 2007
no fuses only control boards.with power off pull the top off and check wires at your power supply board(not the one with buttons). Look for burn or damaged wires. no luck with that, will probably need power board(usually the board that goes out). Call LG and speak to cust service....sometimes will cover the board.
Posted on Jun 11, 2009
Replace reset switch or bypass it to make sure it is the problem. Check for low voltage while the unit is on. Shoud stay above 105 vac
Posted on Jun 28, 2009
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