TV Forums

Free Games Games Forums Music Forums TV Forums

  Main Index FORUM
HOME
Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN
Rules & FAQ RULES
F.A.Q.

Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Samsung 65 LED UN65KS8000FXZA won't power up. Red light cyclesg

 

 


aspenpup
New User

May 16, 2018, 6:52 AM

Post #1 of 3 (140 views)
Shortcut
Samsung 65 LED UN65KS8000FXZA won't power up. Red light cyclesg Can't Post

Purchased UN65KS8000FXZA TV 1.5 years ago (Dec 2016), worked great until just a week ago. I was watching TV and screen just went blank without touching anything. When I tried to turn on, the red LED will briefly turn off, a brief flash of backlight, red light comes on for a few seconds, red light goes off, and then continues with cycle of backlight flashing, red light coming on, red light off, etc.

Since this is out of warranty, I looked into the problem and based upon symptom, it was suggested main board problem. Got a replacement main board and replaced but still same problem. Replaced the power board, still same problem.

Disconnected LCD & LED panel and speakers so it is not dragging down anything but same problem. I have 13v at power supply but after 4 seconds, voltage will dip down to 7 volts for a second and then back to 13v. This does not happen after I remove 2 cables from power board to main board. Seems like main board problem but that has been replaced already.

The only thing left is remote sensor / LED status light, can this go bad and cause the problem? Don't know how to check that.

Or, can this be some kind of software update that went wrong. If that is the case, how can I reload given symptoms?


(This post was edited by aspenpup on May 25, 2018, 3:58 AM)



jts1957
Veteran


May 16, 2018, 4:53 PM

Post #2 of 3 (133 views)
Shortcut
Re: [aspenpup] Samsun 65 LED UN65KS8000FXZA won't power up. Red light cycles [In reply to] Can't Post

Make sure each and every LED backlight is illuminating.


-------------------------
Location: Far, Far Away


aspenpup
New User

May 17, 2018, 6:50 AM

Post #3 of 3 (130 views)
Shortcut
Re: [jts1957] Samsun 65 LED UN65KS8000FXZA won't power up. Red light cycles [In reply to] Can't Post

I get this cycling even when LEDs are disconnected. Is there some kind of circuit that is looping, trying to detect if LEDs came on? Of course, when I disconnect the LED cables, I no longer get the flash on the screen but the red status light will continue to cycle on/off

 
 
 


Search for (options) - Page loaded in: 0.23 s on (CGI/1.1)