Samsung UN55JU6700

[Hy4woj]

Hey guys,

I have a Samsung un55ju6700 that will turn on with a picture for about 2 minutes, then I get a green screen. Next I hear some clicking on one of the boards then the backlights shut off. If I disconnect the LVDS cable from the t-con, the backlights stay on with no problem. I tried disconnecting the panel then connecting the t-con to see if backlights stay on. Backlights shut off anytime t-con is put into the circuit whether or not the panel is connected. Anyone have a similar problem?

[nomoresonys]

Re: Samsung UN55JU6700

See if you have voltage on each side of the fuse on tcon, positive probe to one side at a time negative probe to chassis ground. multimeter set to 20 vdc if you have one and want to do testing.

[budm]

Re: Samsung UN55JU6700

You will get a lot more help if you upload good clear pictures of the whole backside of the TV showing all the boards and how they are connected together, that will be the starting point so we can see what we are dealing with.

[Hy4woj]

Re: Samsung UN55JU6700

Pics of the board alignment is attached, I'm thinking t-con but don't want to guess. I checked the t-con fuse, it is good!

[nomoresonys]

Re: Samsung UN55JU6700

I can't tell if you did test as described, the as described test verifies fuse is good and that voltage is getting from mainboard to t-con, when you just check fuse for continuity it only verifies that fuse is good.

[Hy4woj]

Re: Samsung UN55JU6700

sorry I did not, I will check that as soon as I get a chance.

[CapLeaker]

Re: Samsung UN55JU6700

t-cons are cheap to replace.

[nomoresonys]

Re: Samsung UN55JU6700

Here's a possible match, see if your sticker numbers match up, you will be trying to match the first 10 digits starting with BN on the sticker: https://www.ebay.com/itm/SAMSUNG-UN5...EAAOSwQmJceAfg

[Hy4woj]

Re: Samsung UN55JU6700

Ok guys,

I think I will try a t-con, TV worked great all day yesterday now finally today I got the dreaded all green screen. This time the backlights stayed on. I checked the voltage on both sides of the t-con fuse, 12.6vdc on both sides. Any other tips? When the screen goes all green, there is no video at all.

[Hy4woj]

Re: Samsung UN55JU6700

Another thing to mention, is when screen goes green i can still here sound from the main board, volume controls, channel controls still work which leads me to believe the main board is ok. It seems to respond to the commands appropriately.

[Packard93]

Re: Samsung UN55JU6700

Yes I have samsung tv was working on I would get click too with t-con board also .It turned out to be a power supply. I took my board out look for anything visually that looks bad. Mine was a bad electrolytic compacitor. The only way I could tell is there was a black burn where the comapacitor got hot left a black spot could easily see.Later I looked and saw the compacitor was black too other side of board.