Re: Samsung LA40C530F1RXXA Backlight Shuts Off

Thanks all. I came right. It was CFL tube no 9 or 10.
I have bypassed the transformer for it, and the TV is working great now.
And I have made a video of fixing it :
[url]https://youtu.be/RshRABoAhqE[/url]Re: Samsung LA40C530F1RXXA Backlight...RABoAhqE[/url]

Re: Samsung LA40C530F1RXXA Backlight Shuts Off

Thank you, the 2nd YT video looks the most promising.
I assume that (like the problem he had), my Multimeter is too slow to catch the spike....
Guess I have something to do tonight then...

Hi All.
I have the above Samsung LCD TV,
When first plugged in and powered on, it works fine for 20 minutes or so. The backlight then shuts off (but sound is still fine, and I can still see the image working by shining a flashlight into the screen.)
If i restart it shortly thereafter, the Backlight only stays on for at most a minute or 2, then shuts off.
WHen on, the backlight looks even.

I have cleaned both the PSU and inverter boards.

LD (Pins 7 and 8) are 9.6vdc when the backlight is on. It then drops low (maybe to 2vdc), at which time...

Re: New Members - please post your introductions here

Hey Call.
I Hail from Shelly Beach, Kwazulu Natal, South Africa.
Suck at SMPS repairs so maybe this will help out a bit..