41CX halfnut keyboard not responding

[teenix]

(12-14-2015 06:00 PM)quantalume Wrote:  A related question: do you think it's feasible to desolder that 44-pin CPU with hot air, provided I use kapton tape over the heat stakes? I have another CX with a bad LCD that could be a possible donor.

Probably with a rework solder station. Blowing hot air might damage other components.

A trick I came across recently for desoldering surface mount chips (I think it is on UTube somewhere) uses a Halogen car headlamp. These emit quite a lot of heat and is sufficient to melt the solder. You might be able to mask the plastic part of the chip to protect it a bit. Sunglasses required ;-)

cheers

Tony