HP 41C is acting up


I have a HP 41C that displays the PRGM ALPHA and Flag 1-4 annuciators when I turn it on or press the USER switch. The display goes back to normal when I press practically any key. Any suggestions on how to fix this?



Maybe an ultrasonic cleaning and resoldering as necessary?

This service, available at "www.fixthatcalc.com" for a reasonable price worked wonders for the used pre-1985 41C and 41CX I bought.

-- KS

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