Hi Everyone,
I've been poking though the forum and have got a lot of great info so far but I'm at a loss at this point and was turning to the forum for some assistance.
I have been troubleshooting my UN65JS9500 TV where there is no backlight. Upon further investigation of the Power Supply / LED Board BN44-00818A when testing the CN803 connector(circled in green) which goes to the LED control board I have Pin 1 - 5v and Pin 3 -13V but I would expect to see 32V on PIN 14 - PIN 21, there is no voltage.
I have continued to investigate and found no voltage at TM901CS (circled in pink) which I believe is responsible for generating the 32V for the Vdrv outputs but I also haven't located the schematic for this board either.
If I look at the board correctly there is a THICK black line which I believe depicts AC vs DC. ie DC in the upper left if looking at the top of the board and everything else is AC.
I found FP903S (Circled in red) to be faulty and replaced it however when the board was powered on the fuse blew. The fuse I replaced it with was Schurter Inc. / 0001.2509.PT which is a 3.15A Slow Blow 250V fuse.
If I trace back from FP903S I come to the middle leg of DP807C(circled in blue). Does anyone know what the voltage output and current should be? Or have a datasheet for SFI608PT or is it SF1608PT?
I've attached high res photos from shopjimmy to help with the identification. Any guidance would be appreciated.
I've been poking though the forum and have got a lot of great info so far but I'm at a loss at this point and was turning to the forum for some assistance.
I have been troubleshooting my UN65JS9500 TV where there is no backlight. Upon further investigation of the Power Supply / LED Board BN44-00818A when testing the CN803 connector(circled in green) which goes to the LED control board I have Pin 1 - 5v and Pin 3 -13V but I would expect to see 32V on PIN 14 - PIN 21, there is no voltage.
I have continued to investigate and found no voltage at TM901CS (circled in pink) which I believe is responsible for generating the 32V for the Vdrv outputs but I also haven't located the schematic for this board either.
If I look at the board correctly there is a THICK black line which I believe depicts AC vs DC. ie DC in the upper left if looking at the top of the board and everything else is AC.
I found FP903S (Circled in red) to be faulty and replaced it however when the board was powered on the fuse blew. The fuse I replaced it with was Schurter Inc. / 0001.2509.PT which is a 3.15A Slow Blow 250V fuse.
If I trace back from FP903S I come to the middle leg of DP807C(circled in blue). Does anyone know what the voltage output and current should be? Or have a datasheet for SFI608PT or is it SF1608PT?
I've attached high res photos from shopjimmy to help with the identification. Any guidance would be appreciated.
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