faulty tcon or main board? 42lh3000

[charlierfc]

hi people,i hope im posting question in the correct area.
ok,i have here a 42lh3000 lg lcd.i dont know the history of the tv as i picked it up for free,anyway when i opened it,it had to lvds cable! also when the power button was pressed the tv didnt respond,even though it had a steady red light.i tried using the earth method to turn on the tv but nothing,so ebay for parts,i ordered a main board and lvds cable,plugged all in and the tv came on,great....so i thought!when the picture came on it was all distorted all the colours were wrong,even on the menu screen,looks very like the problems samsungs have when the settings are changed for the wrong type of panel.i checked the tcon and panel to see if the matched,they did.checked the bond tabs,i tried changing settings from the service menu like what fixed the samsung with same screen problem.nothing i can see to fix it.so,where to go next,volts ect seem fine,question i have is.do the main board and tcon need to match for a specific panel in these tvs? its an auo.or is it a bad tcon?picture seems fine just all the colours are funky!!
thank for reading,regards,charlie

[tom66]

Re: faulty tcon or main board? 42lh3000

Yeah, the main board and the panel must be on the same setting. If they are not then you will get distorted colours, you might not be able to change it like you can on Samsung TVs. (I don't know.)

[charlierfc]

Re: faulty tcon or main board? 42lh3000

hi tom,first of all id like to say thank you for all your efforts in the troubleshooting guides and hard work you do on this forum,great work.i was thinking that was the problem as i think you get 2 panels for that same tv,so.will it be luck in buying one hoping it will work mine.ill do some searching though.i wasnt wanting to buy a tcon for it to bbe the same as i didnt think it was that.
thanks again,charlie