I got a hp-38c recently. However, it does not work. The display turned on, but when I press the keys, it registered only 4 key presses, the fifth key press would not displayed. Moreover, it displayed funny digits, sometimes 00000 and sometimes with "-" and decimal point. I have opened it up (including the display screen, metal clips, etc) and clean all components, but it still does not work. Is it because some of the chips (there are three of them) are not functioning ? (connecting cable/battery contacts are in good condition.) Can anyone help ?
HP-38C
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