Hello,today a customer came,with Horizontal lines on the LCD, has anyone troubleshot same problem?
my opinion its a lcd flex probably
my opinion its a lcd flex probably
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
Today, 05:17 PM -
I have never seen an issue such as this one. horizontal lines across the monitor in a consistent manner. I am really interested to get to the bottom of this and I'd value any input from the community.
There are three separate PCB parts attached to each other. They function as SMPS, backlight driver and main board.
I checked the all three blue PCBs: SMPS outputs 19V, PWM controller + mosfets without anomalies, main board has 3V, 5V, 10.5V and 19V present. Crystals output the right clockspeed. This is to be expected as the monitor turns on.
I haven't explored at the green PCB (TCON...08-14-2024, 03:08 PM -
Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed... -
iMac turns on no drops no cracks, tried to DFU Restore the iMac, logo turns on great! however iMac turns itself off and then restarts to the (!) icon and won't post the restore. Tried thunderbolt 3 cable, tried regular USB C cable and nothing.
this is the message it gives me with the error
Unexpected device state 'DFU' expected 'RestoreOS' (Probably forced into DFU mode externally) [com.apple.MobileDevice.MobileRestore – 0xFAE (4014)].
Any thoughts what this could be? I will open it up and repair it but I am not 100% sure since this iMac doesn't... -
Hi all
I have lines on the screen...which is an age old problem that can be remedied by watching Youtube videos and getting out the tape.
My issue (after successfully fixing a different sammy tv with a separate tcon board and isolating the side of the panel...):
This tv has an integrated tcon...so it is a bit more confusing when trying to isolate the clocks.
It has a c ribbon and i have taken each end out to see if that will isolate the lines. instead, it makes it much worse ALL over the tv!
So....i don't know what end of the C ribbon to work with...