Replacing battery onTI-30xa

Try replacing the batteries.
Here's the official word from TI on replacing the batteries on the TI-30XA.

Yea, they do have a battery. Go to " e-how.com" and enter "how to change the batteries on TI 30Xa calcalator.

The following examples will demonstrate how to convert decimals into fractions using the TI-30Xa and TI-30Xa Solar. Please be aware that TI-30Xa Solar School Edition calculators do not have this functionality.

Example: Convert .25 to 1/4
- Input .25, press [2nd][<--] (says F<>D above it).

** F<>D means fraction to decimal, decimal to fraction.

Example: Convert 1.38 to 1_19/50

- Input 1.38, press [2nd][<--].

Example: Convert 9.75 to 9_3/4

- Input 9.75, press [2nd]{<--].

1. Remove slide cover. Place calculator face down.
2. Using a small Phillips screwdriver, remove screws from back case.
3. Remove back case.
4. Remove discharged batteries.
Caution: Avoid contact with other calculator components while changing batteries.
5. Install new batteries positive side up, as shown on diagram inside case.
6. Replace back case, and then replace screws.
7. Press off on on.
Caution: Dispose of old batteries properly. Do not incinerate batteries or leave where a child can find them.
Your calculator cannot hold data in memory when batteries are removed or become discharged.

I hope you mean the TI-30XA, since TI never released a TI-30A.

The TI-30XA uses two A76 batteries, also known as 357. You should be able to find them at just about any department, electronics, or office-supply store.

Here's the full scoop on changing batteries:
http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=71660

To replace the batteries:

• Remove slide cover. Place calculator face down.
• Using a small Phillips screwdriver, remove screws from back case.
• Remove back case.
• Remove discharged batteries.
• Install new batteries positive side up, as shown on diagram inside case.
• Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
• Replace back case, and then replace screws.
• Press [OFF], [ON/C], [ON/C].
Note: The calculator cannot hold data in memory when batteries are removed or become discharged.

• Remove slide cover. Place calculator face down.
• Using a small Phillips screwdriver, remove screws from back case.
• Remove back case.
• Remove discharged batteries.
• Install new batteries positive side up, as shown on diagram inside case.
• Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
• Replace back case, and then replace screws.
• Press [OFF], [ON/C], [ON/C].

The TI-30Xa uses two A-76 lithium batteries. Comparable battery model numbers include: Duracell® D357 and Eveready® 357

Using a small Phillips screwdriver, remove the screws from the back of the case. Replace the batteries, then the back and then the screws.

Press OFF then ON/C then ON/C again.

Full instructions on page 20 of the Guidebook. If you've misplaced yours, download a new one at http://education.ti.com

It's cheaper to buy the new one. On amazon they are pretty cheap. take a look Amazon com TI 30X. cheers

Most likely your battery is dying.

You can replace by removing 6 screws at back of calculator, but cost of battery is around 40% of buying new TI-30XA from Amazon, Staples or elsewhere.

I've used TI-30XA's for years, batteries usually last 2-3 years, then I buy new calculator. The one time I tried to replace battery, fading display still problem, so circuit board had gone bad.

So you could try battery replace and may be OK, but also may be waste of time and $$