Philips 220CW9 no image, power LED cycles toghether with a high pitch whine

[sequille]

I disconnected the LCD panel, left only the logic board and backlight connected and it stays on (white screen). The moment I connect the LCD panel it starts cycling on-off, together with a (not very loud) squeal that stops when the LED off.
The LCD panel is a Samsung LTM220M1-L01, if this is relevant.

[R_J]

Re: Philips 220CW9 no image, power LED cycles toghether with a high pitch whine

How about some good quality pictures of the power supply etc. and some voltage readings so we can see what you have, It sounds like the power supply can't supply the current to run the panel.

[dskall]

Re: Philips 220CW9 no image, power LED cycles toghether with a high pitch whine

Try disconnecting t-con to panel board cables one at a time and see if one side is causing problems.

[sequille]

Re: Philips 220CW9 no image, power LED cycles toghether with a high pitch whine

Turns out that, against all appearances, it was a capacitor. Ended up replacing them all so that i wouldn't have to go through disassembly again.