Help with LG 47LV550W troubleshooting

[busigkille]

Vertical white lines that gets lighter when menu button is pressed.

Would apreciate the help on troubleshooting this one. Attached pictures of the display and model number.

Back cover removed and looks normal. I have fixed tv:s before but i dont have expirence with this common problem

[attainteddragon]

Re: Help with LG 47LV550W troubleshooting

looks like a bad panel to me. disconnect a ribbon cable that goes from the t-con to the panel. power on and check the picture, then reinsert the cable and disconnect the other side.

[budm]

Re: Help with LG 47LV550W troubleshooting

Bad panel.

[tw2005]

Re: Help with LG 47LV550W troubleshooting

Bad panel is on the cards but I think if you can reflow or heat up the main IC on the mainboard it can be that. common problem. If you have another main from a LV LS or LW of the same year they may interface into it for a test. You'll have to do some research. Got someone over here chasing a LS5500 board, also looking for those others so may be some compatibility

Good luck

[tw2005]

Re: Help with LG 47LV550W troubleshooting

If you do not have maybe download the training manual.

It shows how you can force a test pattern at the T-con.

[busigkille]

Re: Help with LG 47LV550W troubleshooting

When cables from mainboard to t-con is removed (picture) the lines disapear and screen is completly empty/dark.

The T-Con board is behind the stand and need more work to get to. Can do this but if you guys are certain that its a bad panel i may as well scrap this one.

Any more toughts or things i should try?

[busigkille]

Re: Help with LG 47LV550W troubleshooting

If you do not have maybe download the training manual.

It shows how you can force a test pattern at the T-con.

Read about how to enable test pattern. But what kind of tools or wires should one use when making the jumper connections? Everything is so small.

[tw2005]

Re: Help with LG 47LV550W troubleshooting

Mate never tried it but I do have a model I should be able to try it on. Won't be for a week though. I went looking for the training manuals cos I was reading up on a panasonic you can activate test pattern on txon from main board.

[busigkille]

Re: Help with LG 47LV550W troubleshooting

Problem was bad panel, TV got scrapped. Thank you for your help everyone.