As above, turns on, speaker drops out of bottom of unit, no sound or picture. If I force power supply on all voltages correct and backlights come on ok. Any troubleshooting tips for boards? TIA
-
-
Re: LG 55LA970W - No sound or picture.
That test usually means the powerboard and backlights are ok. Try shining a flashlight on the screen hit menu see if you see any text or image if not check the voltage on each side of tcon fuse, negative probe to chassis ground positive probe on each end. -
Re: LG 55LA970W - No sound or picture.
Could try unhooking the bluetooth module and camera etc., you tried with both remote and tv buttons right? that's if this model has buttons.Comment
-
Re: LG 55LA970W - No sound or picture.
Are you getting power to your t-con board?I assume no responsibility for any stupid suggestions I might post.Comment
-
Re: LG 55LA970W - No sound or picture.
No image with flashlight test, No difference with Bluetooth module and/or camera disconnected, Both buttons and remote do the same thing and no power to t-con board. I’m thinking mainboard issue ??Comment
-
Re: LG 55LA970W - No sound or picture.
Did you check tcon fuse, you mean no power getting from mainboard to tcon?Comment
-
Re: LG 55LA970W - No sound or picture.
Yes, no power to t-con and fuse is goodComment
-
Re: LG 55LA970W - No sound or picture.
I would say it is mainboard problem.I assume no responsibility for any stupid suggestions I might post.Comment
-
Re: LG 55LA970W - No sound or picture.
Replacement mainboard ordered, will update once fitted.Comment
-
Re: LG 55LA970W - No sound or picture.
Mainboard arrived and it’s a slightly different board. 55LA965W board. Tv powers on but no control so I know it’s a mainboard issue. Looking for a mainboard if anyone has one. EBT62700302Comment
-
When I turn tv on, the backlights come on but there is no sound or picture. I have read that these tv's have problems with the panels going bad but the "no sound" has me questioning if the main board is bad. Is there a way to troubleshoot the main board to determine if that is the problem? -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
Hello everyone,
Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
Anyway I still fully expect that there has been something seriously damaged... -
Hi all
I was just given a Samsung TV with the issue. I read various threads and videos and attempted the ribbon tape method to gain an image, but no luck.
Symptom:
No picture no sound.
When I plug in the power cord, Backlight LED turns on for a half second and then turns off. The red LED next to the power button located center bottom flashes 2 or 3 times. When the power button is pressed after, it does the same thing.
No sound at all.
What I tried:
1. I tried unplugging the left or right ribbon... -
Picked up this Samsung above thinking it'd be backlights but it isn't. Now MAYBE I'll get lucky.
Found some shorted caps among the panel boards. Each cap along the line is shorted. On every board (3 panel driver boards)I disconnect each side right and left ribbons and they are no longer shorted caps and have about 1.5Mohm resistance (on left and right boards). The middle board has the main board disconnected and the caps are shorted. Last 4 pics show arrow to caps.
Now what exactly do I need to do in order to attempt to fix this issue?
do I have to take each one...
Comment