Hey guys, first of all I want to tell you how much I appreciate all of your expertise, and I know you guys are masters at what you do. With that being said, I just started fixing TV's as a hobby not too long ago. I started with just ordering whatever board a tv needed, but lately I have been wanting to fix them at a component level, and I have had success and luck with all of the TV's having bulging/leaking caps. This particular TV however has me pulling my hairs at times. The NS-LTDVD19 does not turn on at all, not even the small LED light in the front of the tv blinks, lights or anything. I took a picture of the PSU so you guys can see what I am talking about. I was looking for bulging/leaking caps, but they all look good in that aspect. I did not remove them from circuit, but I did check them with my DMM on diode mode and they all give me about the same value. I checked what is in the two red boxes, one is a B20H100G which I believe is called a schottky barrier rectifier, and the other one is a K2843 but I don't know what it might be. The only datasheets I can find state it is a N channel transistor but the legs are not the same. The Gate and Source legs on mine are bent forward while the Drain leg stays put in the back. The one they show on the datasheet has all three legs in the same position. Any way I checked both of these in diode mode and placing my black lead on the middle drain and the red on gate. then I placed my red lead on the source (third leg) and I get the same reading on both sides. What is boxed in blue on the picture is the fuse and I also checked that in diode mode and it checked out good. Where can I go from here and did I check the diodes or transistors correctly? Could it be the two big yellow X2 caps that say CARLI? Are these also tested like regular caps?
Attached Files
Comment