Re: Tek LCD screen failure



When you fire it under a BGA, you will very likely ALWAYS see a
difference in circuit behavior. If you cannot see that fact, you have no
business being a tech, or attempting to call yourself one.

Also, ANY lab that has an RH below 30% is an ESD hazard, and an ESD
event waiting to happen... on a daily basis.

Any lab with an RH above 30%, the recommended value, BTW, WILL
condensate water on parts that have been shot with freeze spray.

It is basic physics 101, son. No sauna required. No goddamned freeze
spray required either.


Jeez what got stuck up this guy's ***? I'm not a tech, nor do I call myself
one, I'm a hobbyist doing this stuff for myself with a very good record of
fixing things others have given up on.

Removing the crossposting..

You don't spray anything *under* a BGA, just a quick shot on top does the
trick. Ludicrous it may be, but I've been using it for years and it works.
The contraction from the temperature change can cause a much more local
effect than prodding at a board with mechanical pressure, which can
sometimes distort the whole area of the board, while with the freeze spray
I'm able to narrow it down very easily. I don't care if it's the "right"
way, I just care that it works for me, and that it does. It's just one more
tool at my disposal and if it helps me solve the problem, great, if not,
well in the decade or so since I discovered it, I've yet to have it make
anything worse.



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