HP 28 with battery corrosion - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: HP 28 with battery corrosion (/thread-7548.html) |
HP 28 with battery corrosion - MattiMark - 01-10-2017 06:30 AM A friend of mine has gotten battery acid in his HP-28 (forgot the batteries in the calc for just too long) . And it´s just dead when using new batteries. Is there a way to rescues the calc? How can it be opened? Regards, Matti RE: HP 28 with battery corrosion - Paul Dale - 01-10-2017 06:38 AM If the corrosion isn't too bad, try spraying deoxyit on the contacts. Opening a 28 is painful -- welded heat stacks need drilling and replacing. Pauli RE: HP 28 with battery corrosion - Geoff Quickfall - 01-10-2017 07:45 AM Agree with Paul! Try deoxit and some mechanical cleaning with a stiff artist brush that fits into the battery compartment. Work the brush into the compartment first, shake any debris out, repeat many times. Then introduce a drop deoxit onto a brush and paint the springs with it. OR try this :-) Read the whole posting: Shucking the clam shell |