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HP-41C with 23A batteries - remedy possible?
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HP-41C with 23A batteries - remedy possible?
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HP-41C with 23A batteries - remedy possible?
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11-15-2017, 03:28 PM
Post: #2
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RE: HP-41C with 23A batteries - remedy possible?
I bought an HP 28C a while back, advertised as not working, that had three of those 12V batteries installed. Thankfully the the calculator survived!
If you have a second 41, try swapping the CPU boards to see if you can isolate the fault to the CPU board and/or to the display. Also check after removing the battery pack to see if there is a residual voltage on the capacitor(s) at the upper left edge of the board. You may (likely!) have exceeded their voltage rating and damaged them. They could be replaced. HTH, ~Mark Remember kids, "In a democracy, you get the government you deserve." |
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| Messages In This Thread |
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HP-41C with 23A batteries - remedy possible? - Jonas Sandstedt - 11-15-2017, 01:12 PM
RE: HP-41C with 23A batteries - remedy possible? - mfleming - 11-15-2017 03:28 PM
RE: HP-41C with 23A batteries - remedy possible? - Jonas Sandstedt - 11-15-2017, 05:27 PM
RE: HP-41C with 23A batteries - remedy possible? - Jonas Sandstedt - 11-20-2017, 02:58 PM
RE: HP-41C with 23A batteries - remedy possible? - acapde - 11-21-2017, 07:12 PM
RE: HP-41C with 23A batteries - remedy possible? - Jonas Sandstedt - 11-21-2017, 08:41 PM
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