Re: TI-H: TI85 link port repair?
[Prev][Next][Index][Thread]
Re: TI-H: TI85 link port repair?
> I am looking for information about the possible repair of the
> link port on my TI-85. I had the calculator for about a year before
> I realized that it was not functional, and probably never had been.
> I had attempted to link to a friends calculator once, but never got
> it to work. I dismissed this as a fluke and forgot about it. About a
> year ago I built a link cable for the PC, and discovered that the port
> really was dead.
On new calculators, the link port is frequently difficult to get the plug
all the way in. Sometimes it takes an exceptional degree of force, and
then the plug goes "pop" and you think you've just broken something.. but
it works. The rounded plastic around the plug should go mostly into the
recess on the TI85 when the link is all the way in.
> Does anyone have any idea how to troubleshoot this port, or what
> possible actions I can take to have it repaired? (other than repair
> from TI? At the 45$/hr rate I was quoted on repairs, it would be more
> cost effective for me to simply buy a new calculator).
Mouser Electronics might have a socket that would work. One thing you
could try is to jumper from the link cord directly to the PCB, going
around the link socket itself. That would tell you if the problem is in
not getting a good link connection, or something else.
> This calculator has been 'over clocked', the cap in what I assume
> to be the master clock replaced with a 1pf. I don't think that this will
> effect the operation of the port seriously, but I thought it worth
> mentioning.
Overclocking could have messed up the timing of the link port. Try slowing
it back down to the original speed and linking again.
I could look at it for you if you wanted to ship it to me..
--
Greg Hill
greg-hill@bigfoot.com
www.comports.com/link
References: