Hisense 58R6E3 (Backlights, sounds, no picture)

[curt2199]

I’m working on a Hisense 58” R6E3 $398 Walmart special Roku TV. I picked it up free as the previous owner just said the picture went black so I assumed I’d be doing LED strip repairs. As it turns out the backlight is working fine, the TV responds to remote signals as I can here the typical Roku menu sound effects. My first thought after some typical voltage checks was a bad t-con board so I ordered an eBay damaged set pull for $5. Swapped it out and no change.

Before I order a replacement main board, I wanted to see if anyone else had seen similar issues with this set? I pulled the bottom bezel and don’t see any signs of damage, physical or liquid to the driver boards and ribbon cables. Other than a few scratches on the screen that didn’t equate to cracks, the set looks to be in perfect physical condition.

[dick_barton]

Have you checked the Tcon fuse and it has the supply voltage present.

You could try disconnecting one of the ribbon cabbles from the tcon to the panel and then power up to see if you have half a picture. Repeat for each ribbon

[curt2199]

I couldn’t find what normally looks like a fuse to me but I did get 12v, 3.3v, and 1.8v at different spots on the board and the t-con has a green light lit at the 1.8v spot. The only thing that seemed suspect to me is an area marked (with a perimeter line) 15v near the input cable from the main board is only showing 1.1v.

I did pull ribbon cables from the t-con to the panel driver boards and didn’t see any change.

I can get a photo of the t-con shortly.

[neilc6]

Connect one side at a time between the tcon and panel. This will determine if there is a problem in the panel.

[curt2199]

Done. Disconnected both and connected one at a time. No change.

Originally Posted by neilc6

Connect one side at a time between the tcon and panel. This will determine if there is a problem in the panel.

[Tv Terminator]

I have the same problem but with the same model and 65 inch version. Ribbon cables to driver boards were disconnected one by one to see if I could get half an image and there was no change. Does anyone have an idea on what could be done next.

[dskall]

I would say mainboard problem.

[nomoresonys]

post some focused pictures of each board and one of the whole back as to see how everything is connected.