No longer turns on. don't know how to replace battery
You may need to reset calculator. Take ou the batteries and the backup battery. Leave them out for about 8 hours. Then put everything back in. Hopefully this will work.
SOURCE: ti-84 runs slow after replacing batteries
might want to reinstal program and APP's. Check memory size too. You might free up some memory
SOURCE: TI-nspire will not turn on
Yes we changed out the batteries on now the TI-84 will not turn on HELP
SOURCE: TI 89 won't turn on
Try a hard reset if you're willing to sacrifice the contents of all RAM.
1. Make sure the batteries are installed correctly.
2. Press and hold the 2nd, Left, and Right keys.
3. Press and release the On key.
SOURCE: ti-89 won't turn on
TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on at all. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
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Replace the battery. The TI-503SV comes with a GP189 button battery. This can be replaced with a 389 button battery. Unscrew the tiny screw on the back. I recommend making a tape loop with the sticky side out Put the screw on that to reduce the chance of losing it. CAREFULLY pry the colored front from the back using a small slot screwdriver. The front is held on by tabs and you don't want to break them. Once the front is separated, you can easily slip the battery out of it's holder using a toothpick and slip the new one in. Snap the parts back together and put the screw back. And Bob's your uncle.
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