Emax

Julian,

It's good to know that you in the process of actually doing this project. I am about to get started myself.

Just curious what this "rework station" is. Is this something I could possibly find at Radio Shack?

As I was reviewing step 2 in the "Retro Instructions" I opened up my Emax and discovered that the trace between 11 and 12 instead of 12-13 on IC2 has already been cut. 

Do you think that this will create a problem for me? And is there a recommended way to rejoin the trace?

I too am planning to add the SCSI port from the back instead of adding a hard drive.

I will be tracking your project in hopes staying safe with this project. I don't do this type of stuff often but I believe that I can do this project will some good reference and guidance.


Reggio


--- On Mon, 10/27/08, Julian <jujulilianan@...> wrote:

> From: Julian <jujulilianan@...>
> Subject: [emax] emax version 2 board SCSI upgrade in action...
> To: emax@yahoogroups.com
> Date: Monday, October 27, 2008, 12:00 AM
> well, seeing as we're tralking about what it's like
> to upgrade a version
> 2 emax, I started work on my version 2 board at home
> yesterday
> afternoon, (having skimmed the mod sheet and seen all the
> drawings
> thinking it was just a bunch of cut and rewires - and
> thinking "ooh!
> simple!")
> 
> then as I was going through I got to the dreaded U13....
> 
> So I took the board into work today and just had the socket
> out in 2
> minutes with a rework station, but if I didn't have one
> of those
> available to me, it would have been a lot more painful -
> would require
> cutting up the socket into pieces with your craft knife,
> and
> pulling/cleaning every pin hole separately - a good half
> hour plus of
> work, if you wanted to do a neat job.
> 
> so tonight I'll hopefully have time to put in the new
> socket (yes the
> PCB has a footprint for a 28 pin part - they just only
> placed a 24 pin
> socket... bastards! all this hassle, and future upgrade
> expense for
> their customers, so they could save a fraction of a cent
> per build!) and
> finish the rest of the cutting and wiring.
> 
> sometime later this week I'll double check my work, and
> then put it
> together and see how the upgrade went.
> 
> 
> I'd estimate for anyone going to a halfway decent tech
> with a basic
> desoldering gun, that there's about 1.5 hours work from
> sealed case
> without the SCSI mods to sealed case with the SCSI mods....
> at least for
> the version 2 PCB in an emax rack - not sure how simple the
> keyboard
> comes apart and back together.
> 
> 
> 
> I'm also very very interested in taking a SCSI port out
> the back of my
> emax.... half tempted to do a simple remake of the original
> emax version
> 2 SCSI adapter PCB. would be very simple to route and make.
> might have
> to spend an hour or two working out what pins on the 50 way
> headers
> route to the header that goes to the D25.... will
> research.... If I do
> make a design up, I'll be getting a bunch of them
> made.... is anyone
> else interested in this?
> 
> 
> 
> 
> 
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