LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

[kevinm34232]

I have this TV which didn't turn on. I diagnosed as having a bad main board. The original board in the TV is an LG 55.73G01.001. I couldn't find this board, but Shopjimmy has a substitute listed EBT61525903. I found that one and ordered it.

The TV works now but has the inverted/negative picture like the AS15-19 problem. This T-Con does not have that chip though.

I'm wondering if the main board is really not compatible even though the full service code matches. The board I ordered shows it's for a LG LC420WUE-SCA2 panel while my TV has a AUO T420HW09 V.0

Is there a service menu on this TV?

[kevinm34232]

Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

OK does anyone know if there is a service menu on these where you may be able to possibly change the panel type, and how to access it? Thank you.

[Alastair E]

Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

You'll need to change the Panel Type in the boards service-settings--But whether the 'menu/menu' service page goes deep enough I dont know.

--You may need the computer software and data-lead to do it--Both only LG service centre stuff....

[kevinm34232]

Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

I was able to get into service menus
http://openlgtv.org.ru/wiki/index.ph..._modes_/_menus

using a universal remote
http://openlgtv.org.ru/wiki/index.ph..._menus_/_modes

But not way found to change the panel unfortunately.

[kevinm34232]

Re: LG 42LK450-UB.CUSDLH Has Inverted Color After Main Board Replacement

Replaced main board with part # EBR73308816 and it works fine.