Question about LG 42PX5D 42 in. Plasma HDTV

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LG 42KK Power Supply Schematic Requested

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

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  • Anonymous Aug 07, 2008

    hello,I need schematics diagram of power supply panel-lg42pc1rr-zl plasma tv, The PCB no is 68709MOO31A/5.The tv went dead due to public power outage. A capacitor and two burnt diodes have been replaced but no show,however,when the tv is switched on the red indicator light comes on and changes to green when power on is pressed using the remote,nothing happens thereafter?????. THANKS.-Ado.////..

  • Mark Stewart
    Mark Stewart Aug 11, 2008

    Power connected however tv will not switch on


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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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