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Dell P1110 in a dumpster. - Page 2

post #11 of 18
Thread Starter 
Quote:
Originally Posted by Manyak View Post
Ok when you word it like this I'm almost certain that it's a fault in the green video amplifier circuit, and more specifically, the FET. It sounds like it's over-amplifying the green signal.
exactly what i was thinking.

I can usually figure out whats going on in an LCD, but having this thing open, makes me feel like a dentist working on the space shuttle.

My circuit theory is null. Pictures maybe help?

EDIT: I go back to class on monday, im a networking student, but we share a room with electrician students and have access tot he kind of testing equipment i will need. I just need to know what to test to take it in and do it.

here in my little iphone repair workshop i dont have the tools required to properly test a mosfet.
Edited by Xinoxide - 8/20/11 at 9:52pm
post #12 of 18
Quote:
Originally Posted by Xinoxide View Post
exactly what i was thinking.

I can usually figure out whats going on in an LCD, but having this thing open, makes me feel like a dentist working on the space shuttle.

My circuit theory is null. Pictures maybe help?
FETs look something like this:


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post #13 of 18
Thread Starter 
Quote:
Originally Posted by Manyak View Post
FETs look something like this:

:: Insert images of mosfets ::
maw, i know that part, The inside of this thing is full of them in all different shapes and sizes. Im saying, i cant rightly identify the seperate color circuits on the board.
post #14 of 18
Quote:
Originally Posted by Xinoxide View Post
maw, i know that part, The inside of this thing is full of them in all different shapes and sizes. Im saying, i cant rightly identify the seperate color circuits on the board.
Oh..well I guess the easiest thing to do is to follow the green input from the VGA plug. First it goes through a preamp, and then an amp, and then to the gun.

You could also check the service manual.
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post #15 of 18
Thread Starter 
That manual will be infinitely helpful.

Also, I didn't even think about tracing from the vga input.

Thanks Manyak! Your input is going to go a long way.
post #16 of 18
YW

Keep us updated!
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post #17 of 18
Thread Starter 
OH yeah Manyak, I've got a bunch of P1230's as well.

Some have similar problems, think they are about the same on the inside? like women...
post #18 of 18
Quote:
Originally Posted by Xinoxide View Post
OH yeah Manyak, I've got a bunch of P1230's as well.

Some have similar problems, think they are about the same on the inside? like women...
lol...

Similar isn't the same.
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