Trying to Save - Samsung 60" UN60D6000SFXZA - Displays flashes on then... nothing

[KYBOSH]

Picked this one up the other day.


Previous owner says it would just go off by itself.

When I plugged it up I get a solid standby light.
WHen I power it on i see a HALF the screen (right side) light up then nothing.
Its dim... but not completely off. The TV doesnt respond to any commands other than pressing OFF on the remote.

I was pretty puzzled until i realized this is not a plasma tv but rather a LED-LCD TV with backlights.
It looks and feels JUST like a plasma.


Quick search on this thread shows that the backlights are the main issue with these.
I'll tear into it tonight or tomorrow to see if I can use my backlight tester on it to confirm.

[EazyBone]

13 yrs old. Good run. I can't even waste my time with those. Samsung used screws back then takes so long to disassemble

[nomoresonys]

These older models are more reliable, samsung went completely to shit a bit later all the way up til now.

[CapLeaker]

13 yrs old. Good run. I can't even waste my time with those. Samsung used screws back then takes so long to disassemble

So true!

[CapLeaker]

These older models are more reliable, samsung went completely to shit a bit later all the way up til now.

Well they had their own problems, I would say…

[nomoresonys]

Indeed, I think the bean counters at samsung have been paying attention only to making them as cheaply as possible, quality be damned. slap together ship it out. Sure fire way to turn a good reputation bad, which is what they have done. I've had and seen the most problems from samsung tvs from prolly 2015 and newer.

[KYBOSH]

Mission FAILED.
The backlights i ordered arrived today. I went to install them but the panel display was stuck HARD to mounting strips. Sort of like glue...probably bcos of the age. I went around it carefully with my heatgun, plastic pry tool and suction cups heating, lift and securing the panel. I did the right side and all the bottom where the delicate panel boards were dangling by their delicate bonded film. Got past that area and started to heatup the left side. As i was moving my heat gun away the cord caught on one of the film strips! And took half of it off the panel.



Normally i would have had these taped to the panel but bcos i was using the heatgun on the area it was not possible. In hindsight i ahould have immediately taped them to the panel once i had cleared that side but i was focusedand wanted to keep going.

UNLUCKY!

[Unspun01]

@KYBOSH: Well, for your next trick, you can buy a replacement COF (chip on flex) cable and learn about re-attaching such a cable to the panel using anisotropic conductive film/tape, and conventional resoldering to the panel buffer strip (if needed).

If that COF flex cable is not damaged, you might only need to re-attach to panel using that anisotropic tape.

I once repaired a TV for a customer who yanked on their COF flex cable during "cleaning". But in their case, the flex cable was still attached to the LCD panel itself, and the damage was to the flex ribbon cable where it attaches to the panel buffer board (the green PCB). I gently heated and removed the flex from the green PCB, cleaned up the solder interface, pre-tinned the individual pins on the green PCB, tinned the traces on the flex cable, lined them back up under a big magnifying lens, and by using lots of flux and a wide flat solder tip and not too high of a temperature (300C), I heated the solder through the flex cable and re-made each individual solder connection. TV was saved. Luckily I didn't have to replace the flex cable.

It would have been easier with ACF tape, but I did not have any, nor was I aware of its existence at the time of the repair.

Here is an into video to ACF tape bonding: https://www.youtube.com/watch?v=biHFJFHpqdM