My TI-15will not power off

Remove the rear cover and take out all of the batteries. Use a can of air to blow each of the keys to make sure that nothing is stuck that you cannot see with the ***** eye. Let it sit for 3 minutes and then reinstall the batteries. Your keys sound like they got pushed in from some objects in the bag.

1. Power of device.
2. Remove primary battery cover.
3. Completely remove all 4 AA batteries.
4. Unscrew and remove back up battery cover.
5. Remove all back up batteries.
6. Wait 60 seconds.
7. Reinsert back up batteries and cover.
8. Reinsert all 4 AA batteries and cover.
9. Power on device.
10. Memory cleared!

did you get it serviced lately

Hello,
Read the following answer from the TI Knowledge Base.
Hope it helps.

How can I troubleshoot an Error in Xmit error message when transferring data between two graphing calculators?

The Error in Xmit error message is returned when a connection cannot be established between two calculators when attempting to transfer data. There are several factors that can contribute to this error message.
• The calculators being connected are not compatible for data transfer.
• The data cable is not firmly connected to both units.
• The receiving calculator is not in receive mode.
• The I/O port on one of the graphing calculators is damaged.
The procedure for connecting two graphing calculators is as follows:

• Connect the data cable to the I/O port of each unit. The cable will fit tightly in the I/O port and snap into place. If silver from the cable is visible, the cable is not properly connected.
• Access the Link menu on each unit
• Place the receiving graphing calculator on "Receive"
• Place the sending unit on "Transmit" or "Send" from the Link menu.

Once the data has been selected, the transfer will commence accordingly.

The data transfer protocols for graphing calculator is as follows:

• TI-73 - Link allows data sharing with another TI-73, TI-82, TI-83, and TI-83 Plus.
• TI-82 - Link allows data sharing with another TI-82.
• TI-83 - Link allows data sharing with the TI-82, TI-83 family calculator, and TI-84 Plus family calculator.
• TI-83 Plus/TI-84 Plus family- Link allows data sharing with another TI-82, TI-83 family calculator, and TI-84 Plus family calculator.
• TI-85 - Link allows data sharing with another TI-85(To a TI-86. Not From a TI-86).
• TI-86 - Link allows data sharing with another TI-86 and from a TI-85 to a TI-86.
• TI-89 family- Link allows data sharing with another TI-89 family calculator and from a TI-92 family calculator.
• TI-92 family- Link allows data sharing with another TI-92 family calculator and from a TI-89 family calculator.
• Voyage™ 200 - Link allows data sharing with another Voyage 200 and TI-92 family calculator.



If the cable does not fit properly into the I/O port, or if the I/O port appears to be damaged (broken or separated plastic, obstruction inside the port), call 1-800-TI-CARES (1-800-842-2737) M-TH 8:00 AM - 7:00 PM FRI 10:00 AM - 7:00 PM Central Standard Time to speak to a representative or sending an email to [email protected].

Hello,

You may have to force the calculator to boot up so that you can reinstall the OS. Details are in the article . Read the part on Ti83Plus family.
The article contains links to additional pages.
Hope it helps.

Hello,
Press [2nd][QUIT] to interrupt any program stuck in memeory. Press [CLEAR] button to clear the screen.
Try adjusting the screen contrast.
Hope it helps.

I can turn the calculator on but can't use any other button. The cursor just keeps flashing.

ON, 2nd, [up] arrow to change the contrast. Works 99% of the time....

You should be able to get that part direct from Canon USA. Here is their info: For toll-free technical support, please call 1 (800) 828-4040 during regular business hours (currently Monday-Friday 8:00 a.m. - 12:00 midnight. EST, Saturday 10:00 a.m. - 8:00 p.m., excluding holidays).

Sorry that you all are having issues with your calculator. Try the reset procedures for your units. Reset procedures can be found in Texas Instruments Knowledge Base which can be found at the following website:

http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=72521&nUsePub=NO&jttst0=6_23871,23871,-1,0,&jtfm0=&etfm1=&jfn=ZG1012A709F38464426C8B7F954BAD10F30F8264D7A42C7ECAC14E43D33C62440B0C3439BADB85CBF64291010A4860F183F8

Note: Even though the reset procedures are for units that do not turn on, they can still be helpful.

Hopefully that works, if not, you can always contact TI by calling 1-800-TI-CARES (1-800-842-2737) M-TH 8:00 AM - 7:00 PM FRI 10:00 AM - 7:00 PM Central Standard Time.