"KenO" wrote in message
...
Hi,

Inherited an electronics unit that has severe contact corrosion due to bad
alkaline batteries.

Appreciate any suggestions how to restore these contacts to working
condition.

Thanks

Dry corrosion/residue is best removed mechanically - once its clean enough
for reliable contact, give it a squirt of silicone spray.

Don't try rebuilding contact surfaces with solder, oxidisation makes
unreliable contact - sometimes its possible to graft on a strip of clean
metal - solder it on, but don't get any on the contact surface.