Emax

Julian,

Thanks and I will keep those good tips in mind and will look into picking up one of those desoldering tools.


Reggio


--- On Mon, 10/27/08, Dave Sotnick <sotnickd@...> wrote:

> From: Dave Sotnick <sotnickd@...>
> Subject: Re: [emax] emax version 2 board SCSI upgrade in action...
> To: emax@yahoogroups.com
> Date: Monday, October 27, 2008, 12:37 PM
> Reggio,
> 
> I seriously doubt Radio Shack would carry something like
> this:
> 
> http://www.sparkfun.com/commerce/product_info.php?products_id=609
> 
> They're quite expensive and typically used by
> technicians at service centers.
> 
> It is possible to use "desoldering braid" or
> various kinds of
> desoldering tools (that use suction and heat at the same
> time) to melt
> and then suck the solder out of soldering joints. I think
> Radio Shack
> used to sell a soldering iron with desoldering bulb (for
> suction)
> attached.
> 
> Another thing to watch out for is over-heating components
> when
> attempting to desolder components/sockets. Heat travels
> very well
> through the delicate traces on circuit boards, and it's
> possible to
> damage some components if they get too hot.
> 
> -Dave
> 
> On Mon, Oct 27, 2008 at 9:38 AM, Jip Harrio
> <harrioj@...> wrote:
> > 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?
> >>
> >>
> >>
> >>
> >>
> >> --
> >> http://bleepin.com
> >>
> >> --
> >> http://www.fastmail.fm - The way an email service
> should be
> >
> >