HP-25 Isopropylalkohol

[Tom Flatterhand]

I received an HP-25 today, which did not work at first. Apparently the accumulators or batteries leaked once and attacked the battery contacts. After a test with a lab power supply and test clamps on the rivets of the contacts it could be brought to life. With a nail file I have then filed the battery contacts something and now he runs.

Unfortunately it is a bit dirty and I cleaned the feet with and the outer housing with gasoline. This has worked well. Then I cleaned the plate around the power button with some isoprophyl alcohol, one spot got a little lighter. Is it known that isopropyl alcohol attacks the housing or especially this plate?