Question about LG 42PX5D 42 in. Plasma HDTV
I am after a schematic for a PLG-421 (3501Q00100A) Main Power Supply Unit to help resolve whatappears to be an intermittent power supply problem. Used in many Plasma TVs - including units with LG 42KK Panel - such as Teac PLM500 etc etc. Any assistance HUGELY appreciated as searches thus far have been fruitless! thanks Scott
You won't find any just ,
use a thermal probe or thermal gun as heat is likely the issue ,
if nothing else replace the main diode /rectifier and caps.
I find that if I replace the hottest items that usually the fix
if there is room for a small fan you will be doing them a great service and extend the life of the tv.
you may find some info on the power supply from one of these links they are generic enough
Posted on Jun 10, 2008
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Posted on Jan 02, 2017
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Here's the information you requested. See pages 30,31,and 32.
Download the .pdf file here:
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