Circuit boards

[Ken Kelly]

Tom,
	I socketed the flash chips on my 95 Camaro LT1 PCM. It had a clear
waterproofing all over the board. This seemed to also be under the chips. I
built a copper foil damn around the Flash chips, then used a heat gun to remove
the surface mount Flash chips, The heat from the heat gun melted the solder and
softened all the goo up so I could pull off the chips. I then cleaned up the
area with repeated cleaning with alcohol. Alcohol did not really disolve it ,
but with scrubbing it cleaned the board up enough to allow me to solder on the
sockets.

		Ken

Tom Sharpe wrote:
> 
> I have a couple of EEC_IV boards that I am trying to disassemble. The
> CPU and ROM  seem to be glued down then sodered into place. There is
> also a heavy, clear coating (waterproofing?) over everything.
> 
> Does anyone know what will disolve this without destroying the board?
> 
> How about the glue?
> 
> Thanks in Advance   Tom Sharpe