lg tv 42lv450 does not start

[freakaftr8]

Re: lg tv 42lv450 does not start

When you replace the main board remove that resistor. There's a possibility that the main board during the resistor test went from bad to worse

[freakaftr8]

Re: lg tv 42lv450 does not start

Also did you make sure that you put the Wire back in its socket for DRV-ON connector?

Yes he bypassed the power on forcing it on however now you get no LG logo or backlights. Before it would display logo and then shut off but now got worse. You can try heating up the main board with a hairdryer and see if it comes on

[Moddingscreen]

Re: lg tv 42lv450 does not start

I put everything as it was, so if I buy a new motherboard it should work the tv? does the power supply card work?

[freakaftr8]

Re: lg tv 42lv450 does not start

The power supply appears to be operating so far.

[Moddingscreen]

Re: lg tv 42lv450 does not start

Reflow bga?

[freakaftr8]

Re: lg tv 42lv450 does not start

You could try before ordering a new board

[Moddingscreen]

Re: lg tv 42lv450 does not start

do i have to remove the power on from 3.5? after reflow?

[freakaftr8]

Re: lg tv 42lv450 does not start

Yes if you like. But maybe leave it for now to see if you get a picture.

[freakaftr8]

Re: lg tv 42lv450 does not start

Note that this could also be an EEPROM issue. No amount of reflow will fix that.

[Moddingscreen]

Re: lg tv 42lv450 does not start

is clear, but if I change motherboard then I always have problems with the eprom? can I mount that of another but identical model?

[Moddingscreen]

Re: lg tv 42lv450 does not start

run reflow but nothing has changed, another question and then do not bother you anymore, I ordered the motherboard found for the same model of TV, mounting the new one I have to remove the resistance from 1ohm from power on? thank you for your time

[freakaftr8]

Re: lg tv 42lv450 does not start

Yes. Don't have that resistor there with new board.

[Moddingscreen]

Re: lg tv 42lv450 does not start

thanks again I will keep you updated

[Moddingscreen]

Re: lg tv 42lv450 does not start

can I install this main? the product code is different but the data is identical

[Moddingscreen]

Re: lg tv 42lv450 does not start

???

[freakaftr8]

Re: lg tv 42lv450 does not start

I'm not to sure I can't read the data on the 2nd picture. If they have a return policy could probably get away if it doesn't work

[Moddingscreen]

Re: lg tv 42lv450 does not start

thanks again for your help, the original card has the following serial: eax64113202 (0). I would like to mount the following model: eax64290501 (0). what data do you need?

[freakaftr8]

Re: lg tv 42lv450 does not start

Sometimes even if the model number of the TV is the same they may have changed panels or some other significance throughout the model year. Sometimes those numbers change sometimes you get lucky and it works anyway

So the model number of the TV the board is coming out of is the same as yours?

[Moddingscreen]

Re: lg tv 42lv450 does not start

the model of my tv is the following: LG 42LV450A-ZC. while that of the card I would like to buy is this: LG 42LV450U-ZC. practically changes (A) and (U)

[freakaftr8]

Re: lg tv 42lv450 does not start

That's interesting that it's in front of the character designator after the- Usually anything That has to do with the model number before the hyphen usually means a product change. Like I said before the least you could do is try it if it doesn't work return it.

I have used Samsung main boards that were for a year difference same size and swapped T cons between 2 different models with no problem before so you may get lucky