PlaneShift

Fan Area => The Hydlaa Plaza => Topic started by: Elvicat on November 19, 2011, 09:37:39 pm

Title: Need help with restoring a Kaypro 2´83
Post by: Elvicat on November 19, 2011, 09:37:39 pm

Yes i actually have 2 Kaypro 2'83's, the first one is in full working order the other one has this litle problem when started up cold that i'd like to fix, images will show the problem.

warning images are rather big, around 1mb each.

1 (http://junk.aecweb.ath.cx/tmp/kay2/19112011079.jpg) this is what happens when it is cold booted.
2 (http://junk.aecweb.ath.cx/tmp/kay2/19112011075.jpg) this is what it's supposed to look like and it does look like this if you reset it or let it load a floppy funny enough.

the rest is just images of the innards for referance if nothing else ;)
mobo (http://junk.aecweb.ath.cx/tmp/kay2/19112011076.jpg)
left side (http://junk.aecweb.ath.cx/tmp/kay2/19112011077.jpg)
right side (http://junk.aecweb.ath.cx/tmp/kay2/19112011078.jpg)

i have soldered a plug on it's power supply and that fixed up some of the bugs but not this one, so if any of you oldies out there have ever playd with these things before or you know some tricks to test just let me know, i might sell this one eventually but the other one is MINE! :P

Title: Re: Need help with restoring a Kaypro 2´83
Post by: shrapnel on December 13, 2011, 06:25:50 am

This place is probably not a good place to get the full help you need. (it looks like you did find a better spot: Ars Technica)

The first thing I would do is CAREFULLY make sure any chip that is socketed is firmly seated in its socket.

Secondly inspect any electrolytic capacitor for bulges or leaks. From what I can tell, this may be limited to the power supply sections (they dry out and become problematic sometimes.)

Now. I say Carefully, as the circuitry that drives the built in CRT screen contains DEADLY high-voltage. You Don't want to get shocked by that.

Thirdly...
This link might help you if you understand things like schematics and all that: http://bitsavers.org/pdf/kaypro/1484-D_KayproTechnicalManual_Dec84.pdf (http://bitsavers.org/pdf/kaypro/1484-D_KayproTechnicalManual_Dec84.pdf)

Title: Re: Need help with restoring a Kaypro 2´83
Post by: Elvicat on December 13, 2011, 03:16:32 pm

just posted this here if there was someone that could help :)
and allready posted on ars technica, no help but got refered to another board, vintage computer.

edit:
and sigh it seems to have been deleted  :(