English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware > Hardware mods

 
 
Thread Tools
Old 03 June 2018, 13:09   #1
Yulquen74
Registered User
 
Join Date: May 2013
Location: Kleppe / Norway
Posts: 180
A1200 modification to prevent Indivision popping out

I never was able to get Indivision mechanically stable enough by regular mounting on Lisa,
so I tried something different.

I took a 84-pin PLCC chip, and cut out its center using a Dremel and a small side cutter blade,
this was quick enough to do. With the die removed (and the inside if the chip cleaned), there
are no connections between pins anymore, except some added capasistance of course.

Then I straightened out is J-shaped legs (I put it upside down in a PLCC socket to ease this job), and
then put it on top of Lisa.

The straightened legs are long enough to overlap a little with Lisa's legs, and easy to solder together after adjusting each pin + cleaning.

Finally added some stickers on top, and installed Indivision and Gayle board, and as the new chip
now fills the whole of the Indivision and Gayle PLCC sockets, the mechnanical connection is now
(at least in my case) much better.

I have done some initial testing, and have not seen any problems yet.
Attached Thumbnails
Click image for larger version

Name:	Chip.JPG
Views:	50
Size:	71.2 KB
ID:	58434   Click image for larger version

Name:	ChipCut.JPG
Views:	55
Size:	115.9 KB
ID:	58435   Click image for larger version

Name:	ChipLegsStraightened.JPG
Views:	57
Size:	60.6 KB
ID:	58436   Click image for larger version

Name:	ChipsInstalled.JPG
Views:	61
Size:	158.9 KB
ID:	58437   Click image for larger version

Name:	IndiAndGayleInstalled.JPG
Views:	60
Size:	165.9 KB
ID:	58438  

Yulquen74 is offline  
AdSense AdSense  
AdSense AdSense  
 


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to prevent 100% CPU usage ? torturedutopian support.FS-UAE 3 01 November 2017 20:19
Prevent intuition/OpenScreen from clearing custom bitmap? dalton Coders. System 8 12 September 2015 22:59
Trading A1200 030 acc and A1200 indivision for Amiga stuff 8bitbubsy MarketPlace 17 14 December 2009 21:50
Indivision AGA (A1200 ONLY) Popping off (Solution) FOL Hardware pics 7 05 October 2009 20:47
will a NTSC A520 prevent me... NfernalNfluence support.Hardware 0 08 September 2007 12:07

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 02:07.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Page generated in 0.06325 seconds with 16 queries