Hello all ~
I picked up this 51" Samsung Plasma the other day and am trying to figure out a few things about it. I have read several dozen posts here on Badcaps and other forums, and have also viewed quite a few videos that were related and tangentially related.
I'll try to be succinct with my questions.
1) I have familiarized myself with the Tab Bond Repair first explained by budm and thought I could do something similar with this Samsung plasma. But, I am wondering if this Tab Bond issue is related to LCD's only?
I ask because I took apart most of this Samsung Plasma (exact Model # is PN51F5300AFXZA) earlier today and it is so thin (only 2.2" deep) that I don't think it utilizes the tab bonds. I can't see any bonds or boards on the top. The front, black bezel popped open off of there easily when I took the back panel off so I could get a good view of this entire top line (Please see image in my Post #2).
There do not appear to be any tab bonds on the bottom either.
There are bottom buffer boards (sometimes called E and F boards?). But, I could not see any evidence of tab bonds down there either and it looked as though the metal framing was, more or less, adhered extremely close to the plasma panel at the factory. So close that it helped give me the impression that the tab bonds really do not exist on this set.
The bezel did not initially come off the bottom fully and I really don't want to take the speakers off to get at these bottom boards if that is a futile act. I will, of course, do so if it will help with the fix.
So .... Is it indeed the case that this Samsung plasma (circa early 2013) does not utilize tab bonds at all?
And, if so, what else would be causing these multi-colored, pixelated lines that run vertically from the top of the screen to the bottom when dealing with a relatively new plasma of this nature?
Could it be the Main/Control Board that needs to be replaced? Seems unlikely because the screen is only affected in that one, relatively small, and congregated section on the far left-hand side. Another potential fix I thought of was to replace this lower buffer board, if that is possible. Question is, can that be done or is it bonded or tab bonded to the panel in a way that prohibits?
2) Since the vertical lines exist only on the far left-hand side of the screen, does that make it more likely that the problem can, in fact, be isloated and repaired? It seems so. I have seen several videos where problems of this type exist all over the majority of the screeen. Here, 95% of the screen or more is absolutely perfect. It's just those pixelations that are "pocketed" on the far left that cause any problems whatsoever. There are approximately 20 of these vertical lines.
Other facts:
Okay. That's where I am at the moment. Any and all insights will be greatly appreciated.
I picked up this 51" Samsung Plasma the other day and am trying to figure out a few things about it. I have read several dozen posts here on Badcaps and other forums, and have also viewed quite a few videos that were related and tangentially related.
I'll try to be succinct with my questions.
1) I have familiarized myself with the Tab Bond Repair first explained by budm and thought I could do something similar with this Samsung plasma. But, I am wondering if this Tab Bond issue is related to LCD's only?
I ask because I took apart most of this Samsung Plasma (exact Model # is PN51F5300AFXZA) earlier today and it is so thin (only 2.2" deep) that I don't think it utilizes the tab bonds. I can't see any bonds or boards on the top. The front, black bezel popped open off of there easily when I took the back panel off so I could get a good view of this entire top line (Please see image in my Post #2).
There do not appear to be any tab bonds on the bottom either.
There are bottom buffer boards (sometimes called E and F boards?). But, I could not see any evidence of tab bonds down there either and it looked as though the metal framing was, more or less, adhered extremely close to the plasma panel at the factory. So close that it helped give me the impression that the tab bonds really do not exist on this set.
The bezel did not initially come off the bottom fully and I really don't want to take the speakers off to get at these bottom boards if that is a futile act. I will, of course, do so if it will help with the fix.
So .... Is it indeed the case that this Samsung plasma (circa early 2013) does not utilize tab bonds at all?
And, if so, what else would be causing these multi-colored, pixelated lines that run vertically from the top of the screen to the bottom when dealing with a relatively new plasma of this nature?
Could it be the Main/Control Board that needs to be replaced? Seems unlikely because the screen is only affected in that one, relatively small, and congregated section on the far left-hand side. Another potential fix I thought of was to replace this lower buffer board, if that is possible. Question is, can that be done or is it bonded or tab bonded to the panel in a way that prohibits?
2) Since the vertical lines exist only on the far left-hand side of the screen, does that make it more likely that the problem can, in fact, be isloated and repaired? It seems so. I have seen several videos where problems of this type exist all over the majority of the screeen. Here, 95% of the screen or more is absolutely perfect. It's just those pixelations that are "pocketed" on the far left that cause any problems whatsoever. There are approximately 20 of these vertical lines.
Other facts:
- These lines sparkle and give off a glow. They are not completely solid nor static.
- The sound is perfect. No problem there. Kept working no matter what tests I did.
- When I removed the flat, white cable that runs from the Main Board / Logic Control Board (the two seem to be combined into one board) to the lower right-hand buffer board (as viewed from the back), ..... the entire left-hand side of the screen (viewed from the front) goes black as one would expect. But, somewhat surprisingly, the vertical pixelated lines remained over and through the black). Please see the related image of that 1/2 black screen. This appears to indicate that the problem is not originating in the Main/Control Board. Is that the case?
- When I removed the small white connector that runs from the X-Buffer board on the right (again, when viewing the back of the set) to this same lower buffer board in question then the entire screen goes black. I would have expected this also. Once again, though, the pixelated vertical lines remained on the screen. And, therefore, this appears to indicate that the problem is not really related to the X-Buffer drivers. Is that the case as well?
Okay. That's where I am at the moment. Any and all insights will be greatly appreciated.
Comment