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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Very strange failure mode on screen. Every other horizontal line works, the rest are intermittent. PICS inside

 

 


rysbrnr
New User

Sep 25, 2020, 5:09 PM

Post #1 of 4 (138 views)
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Very strange failure mode on screen. Every other horizontal line works, the rest are intermittent. PICS inside Can't Post

Hi all,
My Samsung 64" 3D plasma (PN64D8000FF) just started doing this one day. Everything else works fine and we're able to still use it for now. A couple weeks later I lost one horizontal line completely. It's been in this current state for a couple years now and has NOT gotten any worse.

One day it was fine and the next is this strange issue of every other alternating line functions great.

The other 50% of the lines will either:
-work find depending on color, some darker colors perform better than lighter
-sparkle effect
-appear noisy ( snowy)
-ghost images and latency

I recently decided to open it up and here's what I've done so far:
-replaced T-Con board
-cleaned and re-seated ribbons from panel to Y-buffer
-tweak the voltages Vs, Ve, etc to match the original specs on the label (made some noticeable improvements)

I don't have a full set of test equipment at home other than my Fluke multimeter, and an O-scope.


Any ideas on what's going on with this? I can speak "electronics" if that will help anyone help me, lol.

Pics below
close up:

http://drive.google.com/...H3d/view?usp=sharing
https://drive.google.com/...ibK/view?usp=sharing
https://drive.google.com/...Ghz/view?usp=sharing



jts1957
Veteran


Sep 26, 2020, 2:15 PM

Post #2 of 4 (128 views)
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Re: [rysbrnr] Very strange failure mode on screen. Every other horizontal line works, the rest are intermittent. PICS inside [In reply to] Can't Post

Access Denied

On third pix only.


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Location: Far, Far Away


rysbrnr
New User

Sep 29, 2020, 4:36 PM

Post #3 of 4 (102 views)
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Re: [jts1957] Very strange failure mode on screen. Every other horizontal line works, the rest are intermittent. PICS inside [In reply to] Can't Post

oh... the 3rd pic is just another pic of the full screen. nothing special


jts1957
Veteran


Sep 29, 2020, 5:24 PM

Post #4 of 4 (101 views)
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Re: [rysbrnr] Very strange failure mode on screen. Every other horizontal line works, the rest are intermittent. PICS inside [In reply to] Can't Post

I won't look at it then.Tongue


-------------------------
Location: Far, Far Away

 
 
 


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