[Coco] eBay 6309 chips

Sat Apr 19 00:27:20 EDT 2014

Hi, Kip & Chester

If you want to take out the old 6809 cpu’s without killing the motherboard, then get yourself a heat blower, for paint stripping. Then place your coco board so that the solder islands are on top and make Shure that there is room underneath. Also get a aluminum oven tray, the ones they sell at any convenient store (  dollar store) , and cut with a pair of scissors the bottom out of the tray or pan. Place this sheet so that the middle of the sheet is on top of the chip you want to remove and press on the chip that you want to remove, so that the pins make an impression on the sheet. Cut out the outline of the sheet a little bigger then the impression of the pins. Place this sheet with the hole in it over the chip and put something heavy on it so it stays in place.( or get some kapton tape ( heat resistant tape )). Then with the heat gun hoover over the chip at a distance of 1/2 inch, continually making circles, so that you distribute the heat even, never stay at the same spot to long. After about a minute or 2 max the chip will fall out of the board. Maybe you have to tap the board once or two with the handle of a screwdriver, but is should come of undamaged.

Maybe you try it first on a old motherboard, once you get the hang of it you will love it.

( If possible do this in a good ventilated room, it can give bad odor, and probably are the fumes not so healthy )

Hope this helped. If you want my help I will do it for you, the thing is i’m in INDIANA, Knox.

greetz

camillus 

Sent from Windows Mail

From: Kip Koon
Sent: ‎Friday‎, ‎April‎ ‎18‎, ‎2014 ‎10‎:‎39‎ ‎PM
To: 'CoCoList for Color Computer Enthusiasts'

Hi Chester!
How are you going to remove the old 6809 chips from your Cocos?  Are you
going to desolder them in what I would call a proper manner or are you going
to destroy them by cutting the pins?  I've heard people cut their 6809s out
to make it easier to desolder the pins left behind which I can certainly
understand.  I just can't see destroying a perfectly good 6809 chip since
they are becoming quite precious these days.  I too want to upgrade all my
Cocos as well.  I just have not been able to perfect my desoldering
techniques.  The tip on my desoldering iron from Radio Shack is a bit too
big to perform the job properly.  
I want to put all my 6x09 microprocessors in sockets as well.  Until the new
6309 microprocessors are tested, then obviously their condition is unknown.
If the pins on the 6809 are cut and the new 6309 is bad then the Coco is
down for the count and temporarily out of the picture.  That is a risk I'm
not willing to take.  Besides, I just don't like destroying fully functional
chips - that is unless they are Fritos Scoops!  ;D  
Please don't take my thoughts in a bad way.  I'm just trying to figure out
how best to accomplish my upgrades so I guess I'm thinking out loud.  That's
something I do a lot.  I seem to think much better if I think out loud or
write down my thoughts in letters or emails.   Anyway, the 6809 to 6309
upgrade situation has been on my mind for quite a while now.  I do hope that
your 6309 upgrades on all your Cocos goes successfully and without any
intermediate problems.  Take care my friend.  
Kip

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Chester Patterson
Sent: Friday, April 18, 2014 8:56 PM
To: 'CoCoList for Color Computer Enthusiasts'
Subject: [Coco] eBay 6309 chips

Hi. I'm going to pop the 6809s on my Cocos and put in 6309s.
I am looking to buy some 6309 IC's on eBay. The ones I'm looking at are at
http://www.ebay.com/itm/181103857635

Is there any experience on the list with this seller/these chips?
Suggestions? Recommendations?

Thanks much.

Chester
TI2/KJ4HLT
Costa Rica
Come for the beaches! Stay for the beer!

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