There are still new tv sets that can be fixed with no service info . I
have seen silly things go wrong with them including bad solder and big
white brick resistors burned out , shorted diodes , blown fuses and poor
solder inside tuners all in sets no older than 3 years .
You can use a big soldering gun on the big parts or small capacitors IF
you are used to one and are carefull . A solder station is best for the
tiny work .

I am good friends with the only local full test bench repair shop in
town . I take quite a few sets there that i cant get fixed
that are almost new . He has found a few with solder splashes that
eventually shorted across ...stuff you can only see with a magnifying
glass . Most ofthe others need YC chips microprocessors that failed or
some ic chip or some kind that you could only find with the service
manuals that he PAYS dearly for .

Hang in there you can probably fix a few if you go slow .