Mulja tv repair portal
Equipment Repairs => PLASMA TV forum => Topic started by: GP ELECTRO on October 31, 2010,07:50:51
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Hello,
can someone who has more experience with this LG PLASMA to help me to judge which module is defect.
The TV can with remote commander switched on and of . When is on the front led diode is green . All voltage on power board are present exact as is written on board (VS,VA,+5V,16.5V and 12V). All fuses on Y board and Z board are OK but Y board is cold. That’s mean that is not working. I have resold the both transformer in Y board. Y board is with transistors
In the control panel board there are 4 SMD led diode only is shining D103 (Z-ER ON). In this board +5V and +3.3V are present
The customer told me that a month ago was a power break for a second after that he lose HDMI inputs in MENU of TV. He was watching his TV further a month and in one moment screen was black but sound was present
My question is which board is defect Y or PANEL CONTROL board ? Main board is definitely defect because he has no HDMI inputs.
Service manual I have but it is so poor that you can’t it use.
I need advise from a LG expert to help me in judgment which board must I order except main board
Many thanks in advance for help :c017:
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Hi. You need to perform detailed measurements to rule out the bad board here. But it will definitely be CTRL or Ysus, no doubt about it Does data arranger chip goes warm on CTRL or is it very hot? If light 2010 comes up, CTRL needs new software dump, but I don't think it's your problem anyway. Check with your scope if you get any LVDS Ysus waveforms coming out of from CTRL to Y-main. Please upload the photo of CTRL panel and I will hel you with it... :051bye: