[Coco] MPI problem or ...???

[Roger Merchberger]

Rumor has it that Gene Heskett may have mentioned these words:
>On Thursday 21 June 2007, Brian Blake wrote:
> >
> >Thanks guys, keep the good info coming!!!!


>A couple more things to check Brian since these things are nearly old enough
>to vote.

Maybe yours... but I got mine as soon as they came out in '87, so mine's 
been voting for a couple of years now, and damn near old enough to get 
served Tequila in a bar with me! ;-)

>1. clean up all the blackened coating on the card edge connector that plugs
>into the coco.  Get brutal, as in a small piece of 0000 steel wool and some
>contact cleaner & make it shine on both top and bottoom...

[snip]

Or pick up some DeOxit... (the red stuff). If the contacts are really 
dirty, the 100% solution in a squeeze tube would prolly be best:

http://store.caig.com/s.nl/it.A/id.2331/.f?sc=2&category=188

 From the company called Caig Labs: http://www.caig.com/

They also make 5% solution sprays, pens, wipes, plus they have the best 
potentiometer cleaner I've ever used (beats the heck out of rubbing alcohol 
(cheap, kinda works) and RS Tuner cleaner (not cheap, but still crappy) :-)

I bought an HP 0-40v variable bench power supply (0-1.5A) and it was 
*impossible* to get, let alone hold, the right voltage. Tore it apart, one 
squirt of DeOxit FaderLube (it was called MCL), 5 end-to-end turns of the 
pot, and now there's no (and I mean *no*) "static" whilst adjusting the 
voltage on the pot - it's *dead on.*

Yippee!

>2.  If that mpi has not had the usual jumpering of all the card socket pin 
>8's
>together, there is a probable problem there because the slot selection switch
>has become oxidized and needs to be given a shot of cleaner and exercised.
>Lots of exercise, then a couple more shots of contact cleaner.

DeOxit's great for this, too. I gave my can to my dad for all the 
contacts/switches in his semi truck ("transport" for the Brits ;-) as they 
constantly have bad contacts due to the vibration & generally poor 
operating conditions truckers have to deal with, and now he won't give it 
back. ;-)

>Gene, a C.E.T.

Roger, a H.U.G.
   (Hardware Uneducated Geek... The best I could come up with on a sunny 
Friday afternoon. ;-)

Laterz,
Roger "Merch" Merchberger

--
Roger "Merch" Merchberger   | "Profile, don't speculate."
SysAdmin, Iceberg Computers |     Daniel J. Bernstein
zmerch at 30below.com          |