Samsung PN43D450A2D, sound no picture.

[zed310]

Sound comes on with no picture, Able to hear different inputs, cable box, iPhone, ect…
Cards look OK, no burns or budging caps, Standby power OK, Plug unit in and turn on via remote VS goes to 207 and then drops, VA goes to 58 and then drops,
Replaced Y sus and Y buffer, no luck, same issue.
Replaced logic board, same issue
Replaced X sus, picture came on for about 5 minutes then went off, now when I apply power it just cycles on then off. When I disconnect the X sus power connector it goes back to the orginal failure mode, sound no picture?

[capkid]

Re: Samsung PN43D450A2D, sound no picture.

I fear you may be in vicious cycle. Stop replacing parts. Pull your X-main and Y-main and look for shorts on the boards with a multimeter, specifically the components on the heat sinks. As is the case with many of these Samsungs, your bad boards may be killing your good boards. It sounds like at least your X-main is now faulty.

Might be useful: https://www.badcaps.net/forum/showth...hlight=Samsung