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HP-21 - Crazy numbers
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05-04-2019, 09:38 PM
Post: #11
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RE: HP-21 - Crazy numbers
Hello,
I've immersed the main PCB in white vinegar and the results have been very good. The first minutes I could even see small bubbles coming out the rests of corrosion. After rinsing and drying there are no blue rests anymore, and the calculator continues working, hehe. Thanks for the support! Regards. Oscar |
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HP-21 - Crazy numbers - BusyCalc - 04-25-2019, 07:20 AM
RE: HP-21 - Crazy numbers - Maximilian Hohmann - 04-25-2019, 12:32 PM
RE: HP-21 - Crazy numbers - BusyCalc - 04-29-2019, 06:16 AM
RE: HP-21 - Crazy numbers - albertofenini - 05-02-2019, 02:05 PM
RE: HP-21 - Crazy numbers - Geoff Quickfall - 04-30-2019, 12:56 AM
RE: HP-21 - Crazy numbers - BusyCalc - 05-02-2019, 08:56 AM
RE: HP-21 - Crazy numbers - Maximilian Hohmann - 05-02-2019, 10:21 AM
RE: HP-21 - Crazy numbers - BusyCalc - 05-02-2019, 01:49 PM
RE: HP-21 - Crazy numbers - BusyCalc - 05-02-2019, 05:04 PM
RE: HP-21 - Crazy numbers - albertofenini - 05-02-2019, 05:09 PM
RE: HP-21 - Crazy numbers - BusyCalc - 05-04-2019 09:38 PM
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