Re: HP33E how to input numbers Message #2 Posted by Dieter on 29 Apr 2013, 3:53 p.m., in response to message #1 by RalfGeiger
The 33E - as well as the other models of the Spice series - come in two flavours: as opposed to the later versions, these calculators originally were built in a solderless manufacturing process. Many of these, including my own 34C, suffer from missing display digits due to bad contact inside the device. In this case you might try this:
First, turn on your 33E and press [STO] and then [ENTER]. After a few seconds the complete display should light up (i.e. all digits display "8" and all decimal markers between them as well as the minus sign on the left will light up). This way you can easily tell if and where a digit does not work. The mentioned key sequence initiates the internal Spice series self-test. If an error message appears, something went wrong.
If a digit is missing, you can try to apply some gentle pressure below the display and see if something changes. You may also try twisting the whole case with both hands (gently and carefully!).
Since you said the 33E starts with a 0, 000 display, obviously the second digit does not work - standard mode is FIX 4, so the initial display should read 0,0000.
Dieter
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