[amsat-bb] Re: Surface Mount Repair
"Karl H. Görsmann"
goersmann at t-online.de
Sat Nov 3 15:24:14 PST 2007
> Hi Guys,
> I am trying to replace a 22 pin surface mount IC on a piece of Panasonic
> video quipment. I have all of the leads unsoldered but now I find that
> the IC is stuck to the board, maybe intentionally. It doesn't appear to
> be just the circuit board coating. It's more like the whole bottom
> surface is cemented.
> I would appreciate hearing from anyone, off line, who has experience in
> removing a stuck IC from the board. I have tried flux removerand 91%
> Isopropal Alcohol with no luck. I hesitate to force it or destroy the
> chip since there are traces running beneath it. Any ideas of a safe
> solvent or another way to unstick this thing?
are you sure it is cemented? Maybe it is an 'exposed pad' pad for
thermal purposes. Take a look on Google how to handle.
73, Karl DL3DA in Goettingen
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