Re: Non responding keys on HP48SX Message #4 Posted by Vieira, Luiz C. on 7 Aug 2001, 8:36 a.m., in response to message #1 by John Fahey
If using a compressor is the only way out (besides oppening the calculator and feel in pain for that), try removing the batteries cover, the batteries themselves and blewing by the batteries holder CAREFULLY. There is a small square hole, botton right, headding the ON/ATTN key, that is the one that does not work. MAYBE this is harmless...
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