Riddled TV Repair Forum

_John · Guest

Needing s/m on this Model if someone could share. Dead, found a diode next to the smps tranformer shorted labed VD802 and shorted HOT Labled U401
Marked TT2140. Thats all I found so far. But I Need to see if there a sub for these two items. Or at least see a diagram for trouble shooting. May be I'm wasting my and your time on this but I would at least want to try.

Google

_Ming · Guest

As the problem component were already found. That need to test the flyback and all its terminal for short component. and then put in the parts that is equivalent to those problem parts as replacement. This will turn out 50% fixed and 50% these parts burnt out again. In Hong Kong I can not have so much service manual. I always use this method to work on it. If it burnt out again, I will trace the circuit carefully and copy down the circuit from the practical thing to look at it carefully. At the routine of checking, some bad parts will be probablydiscover, then job would be fixed. Now I got older, and I can have service manual purchased online or some kind online friend email to me. These help me save a lot of spirit, but also loss a lot of tracing circuit spirit. I am now can not work on the set don't have schematics and also with that job is out of my experience.

_John · Guest

Ok heres the Fix!.
Replace the Diode labeled VD802 Which supplies the 25v from the flyback with a NTE587.
Replaced the HOT Labeled U401 with a 2SD2627.
But if I can get the S/m for future time that will be great.