Question about Texas Instruments TI-84 Plus Calculator
My TI died, I replaced ALL batteries, even the 303 and I still cannot revived my most important friend in statstics. Calculator will not power on
Same problem here:
- TI 84 Plus is dead (yesterday alive and kicking),
- (and exam statistics tomorrow).
I removed the 6 torx-screws, and removed the backside (battery-compartment) from the frontside (screen and motherboard). Once the screws are unscrewed, I used my nails to unclip the two parts.
What was wrong:
Immediately visible was a tiny but fatal corrosion on the two little metal-covered spots on the motherboard, where the metal extensions from the battery-compartment (the backside of TI84) touch the motherboard (frontside). So the power was no longer connected to the + and - entry spots of the motherboard.
I tried to clean the corroded parts, but the thin metal was corroded away, so I bent the two flexible extensions from the battery-compartment a little bit sideways, so they could touch a fresh, non-corroded part of the + and - entry spots on the motherboard.
SOLVED!! My Texas Instruments TI84 Plus works again for 100%
IMHO this corrosion (Cr metal extension of the battery-compartment, and Cu on the motherboard) can be avoided by using golden contacts like in the rest of the hardware industry. This corrosion problem is a ticking time-bomb, good for sales but not good for our trust in this product ... According to Murphys Law these problems allways occur when you have an important exam the next day ...
Hope it helps.
Posted on Dec 10, 2013
There is a chance there is a battery leakage and the contact is spoilt. That's what I'm facing now as well
Posted on Oct 11, 2007
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Posted on Jan 02, 2017
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