Guys, I repaired this TV and it's ok but the image looks slightly blue. I already replaced the color transistors, I even inverted them and nothing happens. The voltage coming from the processor is 2.5v, the three cathodes voltages are 133v and 180v in the board. I made the cathode test with te 15k resistance and it gives me clear colors. Please, help me. What can it be? I have doubts about the screen because the test gives good results. Thanks.
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Guys, I repaired this TV and it's ok but the image looks slightly blue. I already replaced the color transistors, I even inverted them and nothing happens. The voltage coming from the processor is 2.5v, the three cathodes voltages are 133v and 180v in the board. I made the cathode test with te 15k resistance and it gives me clear colors. Please, help me. What can it be? I have doubts about the screen because the test gives good results. Thanks.
Color problem in LG cp-20k70 chasis mc-999a TV
22
hace 6 años
hace 6 años
Guys, I repaired this TV and it's ok but the image looks slightly blue. I already replaced the color transistors, I even inverted them and nothing happens. The voltage coming from the processor is 2.5v, the three cathodes voltages are 133v and 180v in the board. I made the cathode test with te 15k resistance and it gives me clear colors. Please, help me. What can it be? I have doubts about the screen because the test gives good results. Thanks.
2.372
hace 6 años
hace 6 años
Man, if you already made those tests, rectify weldings in the color transistors board, you verified that the voltages were ok, so it's possible that the screen has the color cathodes drained. If it's not very serious it can be corrected fom the internal options menu (for your TV is menu in the remote and the TV at the same time), go to the excesive color and correct it. I hope you can solve it. Comment and good luck.
14.048
hace 6 años
Good afternoon, you have to search in the web the secuence to enter the chasis service mode, check if it's really necesary to have the original remote or you can have a copy. Sometimes you'll need the original remote because it has hidden buttons and sometimes you just need a button sequence that you have to press with the TV on or in stand by.I see that you need a original remote to enter the service mode.
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