Re: LCD Problem (Obvious in Pictures)
I completely removed the tabs from the bad side, but there was still a dark area in the middle of the screen, so it remained unusable....
metalbird44
Member
Last Activity: 02-03-2019, 12:38 PM
Joined: 12-28-2018
Location: Texas
-
Re: LCD Problem (Obvious in Pictures)
I tore it accidentally while plugging/unplugging the ribbons for diagnosis, however, the problem existed before it was torn and hasn't seemed to be affected by it. I'm happy to replace it if it's not too expensive, I think someone said it was a 64 channel ribbon?...Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Which is the "Local Dimming board"?Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Here is the display with the second board of side tabs disconnected (via the brown U ribbon):
Also, I believe I've determined the source of the buzzing noise on the T-Con board:
...Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Yes, the most recent pictures were taken with OPC turned off....Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Okay, switching the corner ribbons had no effect.
However, removing the brown "U" ribbon connecting the two side board on the problem side eliminated the buzzing and moving horizontal lines, but the dark area returned.Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
One more sample, this is what the set looks like with both side driver tabs connected:
...Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Here's some angled shots to reduce glare:
...Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Here's the test color bars:
I couldn't get rid of the glare. The room's not very bright but there was still some residual daylight....Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
What would be a good test pattern? Is there a name for one I can look up?
Thanks for your help.Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
Okay, I replaced in the right-of-screen side ribbon and removed out the left-of-screen side. (The TV is upside down in pictures.)
The whirring sound coming from the T-Con board has returned, as has the flickering, but the spot is still there, although it seems to have changed shape slightly.
...Leave a comment:
-
Re: LCD Problem (Obvious in Pictures)
I saved the TV from being dumpstered.
I found it was having the exact same problem as described here:
[I](buzzing T-Con board, isolated to left-side-most ribbon)[/I]
[url]https://www.badcaps.net/forum/showthread.php?t=50060[/url]
So I disconnected the side ribbon:
Now I'm here.Re: LCD Problem (Obvious in Pictures)
I saved the TV from being dumpstered.
I found it was having the exact same problem as described here:
[I](buzzing...Leave a comment:
-
LCD Problem (Obvious in Pictures)
Model: Sharp LC-70LE757U
Problem: Dark Area in Middle of Screen, [B]HOWEVER[/B] OPC meter displays perfectly in that area
Steps Tried So Far: Disconnected the Left-of-Screen-Side Tabs from the T-Con board
Model: Sharp LC-70LE757U
Problem: Dark Area in Middle of Screen, [B]HOWEVER[/B] OPC meter displays perfectly in that area
Steps Tried So Far: Disconnected the Left-of-Screen-Side Tabs from the T-Con board
Model: Sharp LC-70LE757U
Problem: Dark Area in Middle of Screen, [B]HOWEVER[/B] OPC meter... -
Re: New Members - please post your introductions here
Hi, my name is Daniel and I'm a DIY enthusiast. Came here looking for tips on consumer electronics repair.
Especially interested in high-end audio equipment as I have a pretty decent background in professional-grade studio recording equipment and professional-grade theater design/equipment (acoustic/electrical engineering).
Thanks!Leave a comment:
No activity results to display
Leave a comment: