HP 21 not powering on - repair/troubleshooting advice
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01-27-2021, 07:31 AM
Post: #6
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RE: HP 21 not powering on - repair/troubleshooting advice
(01-26-2021 10:13 PM)dmh Wrote: Hi, lucky man.... Have you verified that the circuit and the components are not dirty, I mean traces of acid leakage from batteries? The problem could be due to the presence of bad/wrong contacts due to dirt, Usually the first thing I do with a sleeping woodstock is a bath in a solution of water and vinegar, then letting dry well several hours, often it helps. Try this this, please if you haven't already done it! Regards Aurelio |
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