I was trying to change the ink roller (20 minutes later still can't get it to go in) and I must have push some button to change the mode or something on the calculator. The letter "E" is diplayed and I can't get the paper to feed or any buttons to work now.
Thanks
Mine did the exact same thing, only when I would multiply or add 5 and 5, when I hit = it showed up 555. I just put it on POWER IC for about 15 minutes. Then hit the clear button at the same time as I turned off the power. When I turned the POWER ON there was no longer an E or the crazy triple digits. Hope yours does the same. GOOD LUCK!!!!!!
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