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HP Forums / HP Calculators (and very old HP Computers) / General Forum v / HP-29C now has dots across the display...

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HP-29C now has dots across the display...
09-02-2024, 02:09 AM
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Bill Duncan Offline
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HP-29C now has dots across the display...
Has anyone seen this before?

My beloved HP-29C that I've owned since the 70's now has a string of dots across the display, both in normal and programming mode. It's also acting strange. The dots are not full brightness, but appear to be flickering fast.

I've tried removing the batteries, shorting the terminals to get an error display back. That seems to have corrected it for now.

Is this a sign of impending failure? Perhaps some electrolytic capacitor failing? Maybe an overvoltage thing? (I'm using fresh alkaline batteries.)
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HP-29C now has dots across the display... - Bill Duncan - 09-02-2024 02:09 AM



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