Samsung UE60H7090 LED TV: Black Screen, no Backlight, got sound
Hi
my TV screen changed to black and no backlight after some hours running.
When I switch it on, red led flashes 5x. When I stream music to an device connected to HDMI I can hear the sound and control volume on the TV. I cannot see anything even using the flash light test.
I removed back plate and checked for obvious faulty components. Nothing found. T-con has 1 Blue led on.
I measured fuse on the T-con has continuity and 12V.
- when I disconnect only mainboard, backlight comes up
- when I disconnect only T-Con, backlight comes up, too
- when I disconnect only LVDS cable mainboard to t-con, backlight comes up
- T-con has two pairs (4) of LVDS cables to Panel. When I disconnect 1, 2, 3 (from right to left), nothing happens. When I disconnect all 4 OR only the left pair, backlight comes up and 3 Blue Leds on t-con are on.
Can someody identify which board I need to exchange (hoping it is not a defect panel)?
Thanks
Sebastian
Is this a good question?
Update: When I disconnect 2 of the 4 ribbon cables to the Panel, I get a working and bright picture on half of the screen, the other half shows vertical white lines.
Does that mean I have a defect panel?
by Seb
Got a quote from a Samsung repair service center: Panel to be replaced, about 1200€.
Will probably switch to a different make, bye Samsung
by Seb