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HP 21 repair
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06-15-2015, 05:30 PM
Post: #8
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RE: HP 21 repair
(06-15-2015 03:16 PM)surgdog Wrote: Forgive my ignorance but what is the "new ACT"? Bernhard has created a replacement circuit for the processor (ACT) in some older HP calculators. The chip is prone to fail under not so rare circumstances. This is the thread: ACT available Marcus von Cube Wehrheim, Germany http://www.mvcsys.de http://wp34s.sf.net http://mvcsys.de/doc/basic-compare.html |
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HP 21 repair - surgdog - 06-15-2015, 01:28 AM
RE: HP 21 repair - Dave Frederickson - 06-15-2015, 01:46 AM
RE: HP 21 repair - surgdog - 06-15-2015, 01:55 AM
RE: HP 21 repair - Dave Frederickson - 06-15-2015, 02:14 AM
RE: HP 21 repair - PANAMATIK - 06-15-2015, 02:56 AM
RE: HP 21 repair - surgdog - 06-15-2015, 03:16 PM
RE: HP 21 repair - Marcus von Cube - 06-15-2015 05:30 PM
RE: HP 21 repair - isanchez - 06-15-2015, 11:10 AM
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