|HP-35: once working, now only one dim segment on display|
Message #1 Posted by elmwood on 31 Aug 2011, 2:08 p.m.
I rescued a old HP-35 calculator not too long ago. ($1!) It worked perfectly, but I still disassembled and carefully cleaned the internals, with no problems.
Today, I got a new aftermarket 2000mAh rechargeable battery pack, to replace the original leaked and dead battery pack. I installed the battery, plugged in the HP-35, and all was well. I then turned off the calculator.
A few minutes later, I turned the calculator back on. There's no familiar "0" in the first LED; instead, there will be one lone, very dim segment displayed in the fourth LED from the left. The displayed segment changes when I turn the calculator on and off. Occasionally, it will display two very dim decimal points in the fourth and fifth LED. It doesn't matter whether I use only the battery, the power supply without the battery, or both together - the result is the same.