Re: TI-H: TI-85 Acceleration, HELP!

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-85 Acceleration, HELP!
From: "Richard Piotter" <richfiles@hotmail.com>
Date: Mon, 13 Oct 1997 06:30:43 PDT
Reply-To: ti-hardware@lists.ticalc.org

>I tried to accelerate my TI-85 using a switch.  I am pretty sure I have 
>the circuit right.  When I put the batteries in, the screen becomes 
>black.  I push a bunch of buttons and they begin to disappear.  The 
>problem is that I don't have a cursor and I can't turn it off.  Does 
>anyone have any advice?  Is the problem the circuit or the calc?

I did many accelerations, and I got the same problem once. It turned out 
to be the pad where the bottom of C9 solders to tore up. It was 
connected on one side, but not the other. I scratched off the green and 
white paint stuff on the board and soldered a wire across and it worked.

 ___     ___
|R11|___|C9 |
|___|   |___|\
 ___     ___  \
|   |___|   |  \
|___| A |___|\  \
     /|\      \  \__
      |        \____
      |
This wire trace
on the circuit
board was torn.

Check it out...



Richard Piotter

e-mail: richfiles@hotmail.com

home page: <A 
HREF="http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html">The 
Richfiles</A>

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