P1220 POS White Screen

[ChrisH1120]

Hello, I work for a small company repairing POS terminals. I am having an issue with a Radiant P1220 where when powered on it initially goes through the boot sequence/BIOS and before loading the OS (which is a version of windows that we built in order to test our terminals) the screen goes to white. Also it doesn't seem to just all of a sudden flash to white, it is more of a fade to white starting from either the middle of the screen, or possibly the edges. (I can't remember exactly and am currently trying to make it fail again so that I can see.)

[li]Known good RAM[/li]
[li]Known good UDOC/HDD[/li]
[li]Known good LCD and Backlight[/li]
[li]Known good Power Brick (small base)[/li]

Which I believe just leaves me with the power board, and the motherboard I was able to make this problem go away temporarily by re-loading my operating system on my UDOC. But it seems to eventually come back.

Has anyone else run into this problem? What could it be? It seems to me that something is corrupting my OS, but what could be causing that? Any information or suggestions would be very helpful.

 

[PosTech72]

I would recommend throwing it in the garbage. 1220's are about to be obsolete. Market is shifting to 1515's, 1520's and 1530's. Software requirements are becoming too much for 1220's with multiple solutions without some serious upgrades. I wouldn't bother repairing them if I were you.

 

[ChrisH1120]

@PosTech72 hmmm I wish that was an option. But I will keep that in mind. No guesses as to what would cause a "White Screen" after going through BIOS and before the OS displays?
Thanks for your time though.