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+--- Thread: hp28s issue autotest fails (/thread-21018.html)
hp28s issue autotest fails - tlfrance - 12-20-2023 11:45 AM
Hello hpmuseum guys
I encounter some issues on my HP28S calc. Batteries are new *
1/ On autotest mode, result is : "2 FAIL"
2/ The screen do reset (clear) after i enter more than 2 or 3 lines in the stack
3/ when trying to plot sin(x) for ex, just 2 first dots begin plotting then cacl seems to be freezed. Must interrupt process whith "ON + UP"
Maybe issue can be the RAM chip , but not sure. What do you think about ?
Thanks for help.