DCL20A screen white out

[ninjatek]

I have a DCL20A when turned on operates normally for about ten seconds and then the screen whites out. The on indicator led remains blue indicating normal operation. If I turn off the display and turn it on again the normal image returns for ten seconds and whites out again.

I open the casing and noticed two capacitors disfigured. I replaced them and symptoms remain the same.

If anyone can offer some insight it will be much appreciated.

top side of board showing disfigured caps.


bottom of board.


normal display during first ten seconds.


display after ten seconds.

[Krankshaft]

Re: DCL20A screen white out

Were all of the secondary caps replaced?

[EGuevarae]

Re: DCL20A screen white out

If all white, the Video/signal board stopped sending signal and all you can see is white because the CCFLs are still on. Or LCD Panel itself is shot.
Krankshaft is right. You should replace all the secondary side caps

[PlainBill]

Re: DCL20A screen white out

And check the caps on the logic card. There are typically three voltage regulators there. If the one that supplies the panel shuts down, it could cause this problem. Another possibility is the power supply on the panel board. That one generates the voltages required by the panel.

PlainBill