Samsung LTJ320HN01V LED TV

[Mysorediwakar]

OK, You need to test the DC Voltage on the CNL802
Pin 1: Top 1 + (The Anode of the first LED string)
Pin 3: Top 1 - (The Cathode of the first LED string)
Pin 5: Top 2+ (The Anode of the second LED string)
Pin 7: Top 2- (The Cathode of the second LED string)
1) You will leave the Black probe on the chassis, Red probe on the TOP1 + then keep an eye on the meter when turn on the TV and record how high the Voltage goes up to and then wait 5 seconds to see how low it goes down to. Turn off the TV.
2) Repeat the same procedures for the other 3 pins.
It is VERY IMPORTANT that you follow the instructions.
BTW: You are getting the reading of 124~135V on that main filter cap because you use the wrong GND for the meter, that cap is in the primary side circuit so the negative leg of the main filter cap will be your GND ref. for your meter, not the chassis.

I have a Samsung LTJ320HN01V LED TV which has BN44-00460A power supply. Few days back, picture went off and audio was there. After some time, even audio went off. There is zero backlight. On flashing a torch, l could some display on the tv.

The voltage between Top 1+ and chassis is varying between 110 to 160v. The voltage at other points on CNL 802 is 0. What could be the problem?

[SMDFlea]

Re: Samsung LTJ320HN01V LED TV

Your post was moved to this new thread .

[yokoono]

Re: Samsung LTJ320HN01V LED TV

"The voltage between Top 1+ and chassis is varying between 110 to 160v. The voltage at other points on CNL 802 is 0. What could be the problem?"
The voltage variation shows that there are problems with BACKLIGHT (interrupted led)