how to fix tv vertical sweep
fausto408 said:
LOL. Thank you very much for your concern Sinip. As far as damaging the property, Im not worried about it. (As far as Im concerned, shes already a goner!). But if you think I am risking my own life then maybe I should leave it to a professional. Would I have to work on the television while the power is on?
I am very comfortable with computers, (probably will go for my A+ certification soon), I just dont have a too much soldering experience (The only time I recall is when I was building one of those famous Cable Box Descramblers when I was like 12, (now 22) .
As far as the symptons of the tv, it changes back and forth from full, regular screen to a thin horizonal line, but never all the way thin. You can always see some of the picture, maybe an inch or two thick. Would I need a lot of tools before I would event be able to attempt this?
Well, in this case, you don't actually have to do anything while the TV is on (in some cases, when you need to do some adjustments, the TV must be on). So, you can try to fix it while off, then switch it on to check if you got it right.
And when I say off I mean off by mechanical mains switch or by pulling the plug out of mains socket, not off by remotre control! You should certainly need soldering iron (18 or 20W would be ideal), soldering alloy, new set of electrolytic capacitors for vert. out. stage (pay attention to polarity and rated voltage (higher voltage than original is ok, lower is NOT!!!) and then also resolder whole affected area, because based on your description you could have "bad solders" problem, especially if the TV reacts on physical pressure to main board while on (see, in this case TV must be on).
So, unless you do something very stupid, you should be ok (and you can't sue me anyway, I'm not in the States)
BTW, A+ is something I am considering for years now, but never had enough time, or actual need, to go for. But, one never knows...
Anyway, IC451 should be on heatsink, so just look for it and IC451 should also be written on top or bottom of mainboard, next to actual IC.