VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

[jimmyking]

I got a couple of pictures to show you. TV change from number one picture
to number 3 piture in a couple of seconds. It stays in picture 3. But vertical line shift right to left and then shift back to the right step by step.
Please help me. I have the back cover opened. I can show you the pictures later.

[capkid]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

How do your capacitors look?

[tom66]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

A tough one but it looks like a t-con board problem.

[capkid]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

A tough one but it looks like a t-con board problem.

I thought the same thing at first, then I remembered that "VP" usually means it's a plasma.

[tom66]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

Ah yeah. Thought it was weird to have Vizio with Samsung LCD, very rare. Samsung PDP means test pattern can be initiated using 3-4 pin jumper usually to see if control board is the cause or if it is elsewhere. It looks more like buffer board or -Vsc fault.

[jimmyking]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

I thought the same thing at first, then I remembered that "VP" usually means it's a plasma.

Yes. It is plasma TV.

[jimmyking]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

Here are the pictures under the over. Caps are ok from visual inspection.

[jimmyking]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

Three more photos

[jimmyking]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

service manual link

[jimmyking]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

Ah yeah. Thought it was weird to have Vizio with Samsung LCD, very rare. Samsung PDP means test pattern can be initiated using 3-4 pin jumper usually to see if control board is the cause or if it is elsewhere. It looks more like buffer board or -Vsc fault.

Tom,

Buffer board on ebay is about $30. Should I go ahead order one?

Thanks.

[capkid]

Re: VIZIO VP423 HDTV10A Samsung Line vertical and horizontal lines

I'd check all the panel and power supply voltages to confirm they are good before placing an order (see red markings in attachments). All measurements are taken by placing your neg lead on a metal part of the chassis and the positive lead on the test point. VE voltage sample on the X-main is taken differently. Ignore the VSCH measurement - not needed. Compare your measurements to the panel label specs.