Emax

I think even with the solder sucker Radio shack iron (I have used one  
before, but dunno if I still have it), that breaking apart the socket  
with hobby knife or similar (careful not to cut any traces below the  
socket) is still a good idea. Parts of the socket can come off without  
having to successfully remove solder from all 24 pins.

So I agree with previous post.

Also- with that solder bulb iron. If you have some dead board or  
something from any dead electronics, use that for desolder practice  
first.


Just my .02

Regards,
Ted



On Oct 27, 2008, at 2:03 PM, Jip Harrio wrote:

That's is good to know. I will look for one in the coming days.

Reggio

--- On Mon, 10/27/08, sm papke <mothrecords@...> wrote:

 > From: sm papke <mothrecords@...>
 > Subject: Re: [emax] emax version 2 board SCSI upgrade in action...
 > To: emax@yahoogroups.com
 > Date: Monday, October 27, 2008, 12:49 PM
 > Yes, the Radio Shack "Desoldering Iron" part#
 > 64-2060 works like a charm! I used one last night to
 > de-solder some delicate voice chips, with very minimal heat.
 > It can be a bit awkward to use at first though..
 > Cheers
 >
 >
 > --- 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, 10:37 AM
 > > 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
 > > >
 > > >






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