Re: HP 21 display is just red dots. Message #4 Posted by Vieira, Luiz C. (Brazil) on 5 Feb 2003, 3:37 p.m., in response to message #1 by Geoff Harmer
Hi;
you may experience soem dificulty on positioning the batteries out of their original pack. If you want to, the best you can do is openning the original pack and place the new batteries in there. For testing purposes, the original spring is enough for closing the batteries circuit, but soldering them is a better long-term solution.
Success.
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