Materials you'll need:
Soldering Iron
1 NPO capacitor (about 0.1pf - Hard to find!! but a 1 pf will
work but slower)
Screwdrivers (both cross and flat)
Steps:
un-screw the screws on your
calculator,
this includes two on the bottom and one next to the
backup battery.
Use your flat screw drive to open the calculator.
Sliding it through the side gap of your calculator and
turning your screwdriver to pop it open.
Remove the anti-static foil paper by un-screwing the
two screws located at bottom you your calculator.
Un-screw the two screws that holds the LCD (screen) in
place, It's located at the top of the calculator.
Now you can see the whole motherborad of your calculator.
You should see four big IC chips. The two at the very
left are the SRAM chips. The one in the middle is the
ROM chip. The one at the very right (biggest one) is
the Calculator's CPU (Z80)
Locate the "C7" capacitor, it's at the bottom of the
CPU. It
has the shape of a rectangle.
Now un-solder the "C7" capacitor, the easiest way to do
this is
by melting the right side of the capacitor first, then quickly
melt
the left side and quickly melt the right side again. (repeat this
process until the capacitor comes off)
*** Becareful! Don't burn the Wires connecting to the LCD
Screen!!! ***
Now solder the NPO capacitor (0.1 pf) back to where
"C7"
was located (it doesn't matter which side you solder it, it's not
a eletrolytic capacitor)
Just put all the parts back together then you're done! The
calculator is now about 4 times faster then regular TI-82!!!
