Is this a bad panel?

[wetc]

I have a Samsung 215TW. When I acquired it, I immediately opened it, and found bulging caps, replaced all of them with Panasonic FM/FR/FC. Powered her up and this is what I saw, in the first pic.

There is no signal cable attached, so the units screensaver "Check signal cable" Analog is displayed. There are vertical lines emanating from the message box, and there is sever ghosting of the message, as shown in the second pic. The vertical lines follow the message.

In the 2nd pic, the refresh rate is extremely slow, as in 1 box per second . In a normal monitor, you should not even see any ghosting. I also hooked it up to my laptop, and I saw the desktop but it wasnt pretty with vertical lines and smudged text and horrible slow response.

This is a good S-PVA monitor, and getting one like it today would cost about $250 or more.

If the logic board is faulty, I will replace it, as it would only cost me $50. However, if its the panel, then it would not be economical, I don't think.

I included pics of the power supply (with caps already replaced) and the logic board. I tested the supply outputs and they are 13 volts and 3.3, as it should be(silkscreened on the board). The panel receives 4.97 v. All the controls work, and I have already reset the monitor to factory specs.

So do you guys think the logic board is the fault here, or the panel?

I could also do troubleshooting, but I need guidance on what to check.

Thanks.

[japlytic]

Re: Is this a bad panel?

Welcome, wetc!

What were the brand and series (e.g. Samxon GF) of the electrolytic capacitors that were replaced?

[Mad_Professor]

Re: Is this a bad panel?

It looks like a bad T-Con board. There's another board at the top that controls timing the actual LCD called T-Con or Timing Control Board. Since this is a small monitor it's probably integrated with panel itself. Wouldn't hurt to check though.

[wetc]

Re: Is this a bad panel?

I think they were Capxon GL. When I got them, I didnt even power it up. I just went ahead and replaced them.

If its the Vcon board, then would it be the ribbon that connects the panel to it? I read that if this is the problem, it cant be fixed.

I'll go ahead and look at it then. Hopefully its just a bad part on that board. Is there a part that's usually the culprit in these things?

[Rtech]

Re: Is this a bad panel?

A bigger odds option maybe the ribbon cable from logic board to T-Con,I have seen that go faulty on a few occasions,but normally it is the Screen/T-Con that is faulty,and have neve seen one that has been repaired if it is the flexible connectore between T-Con and Screen.