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Service manuals & datasheets => LCD TV forum => Topic started by: cheeky2 on September 13, 2014,17:21:57

Title: LG 37LE4500 LED TV SCHEMATIC?
Post by: cheeky2 on September 13, 2014,17:21:57

Looking for the schematic for this TV as looks like i have a power supply problem! I know they don't contain psu schematics but it will be useful for eliminating fault on the main board.
Thanks Anthony :)

Title: Re: LG 37LE4500 LED TV SCHEMATIC?
Post by: jordan on September 14, 2014,00:25:26

 :sign0098:

Title: Re: LG 37LE4500 LED TV SCHEMATIC?
Post by: cheeky2 on September 14, 2014,15:12:33

Great Thanks  :c017:
 Just about to get stuck in trying to isolate it
Have a good weekend :)

Managed to trace the fault down to Q402 a RT1P141C-T112 pretty obvious as someone had bent the power connector to short out on the 24V rail! But without schematic it would have hard to find what was going on!
 I temporary bypassed on the unit by putting a 2k resistor in its place to the 3.5V standby which then forced the relay on for the power supply for the other voltages :)
 Someone must have been playing around with it as half screen was only up. It turned out one of the connectors on the tcon board was left loose and not properly locked in place.
 Happy days