English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware

 
 
Thread Tools
Old 23 January 2019, 23:35   #1
Homer79
Registered User

 
Join Date: Mar 2018
Location: Redruth
Posts: 24
A500+ repair advice

Saving another A500+ from another battery leak, it didn't look too bad at first and I quickly replaced the first chip.
Tried it again, no luck.
Thought I would reseat the chips and try again, pulled out the Gary chip, half the contacts had corroded away.
Removed the socket, waiting for a replacement to turn up. The traces that have been attacked, I've carefully scraped
away the corrosion and tinned over the tracks where possible. Does anyone put solder mask or overcoat over the affected traces?
Homer79 is offline  
Old 23 January 2019, 23:40   #2
Homer79
Registered User

 
Join Date: Mar 2018
Location: Redruth
Posts: 24
This is what it looks like so far
When its working, I shall replace all the resistors and capacitors in the are as they are rather
green on the solder pads
Attached Thumbnails
Click image for larger version

Name:	50504669_284575975573270_8526424279233855488_n.jpg
Views:	31
Size:	152.6 KB
ID:	61723  
Homer79 is offline  
Old 23 January 2019, 23:51   #3
Daedalus
Registered User

Daedalus's Avatar
 
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 3,657
Yeah, the Gary socket is often the first to succumb to the corrosion, causing a black screen and no activity on boot. The Agnus socket can also be damaged if the leak is particularly bad, so it might be worth checking that too.

I would remove all the solder mask from the damaged/dark traces and clean them all back to bare copper, then replace the solder mask. Tinning them will work too, but I prefer to go over them with a lacquer or epoxy for the job. CircuitWorks do an epoxy that's good, but also expensive. Conformal coating is the type of lacquer that can be used too, and you can get that in an aerosol spray.
Daedalus is offline  
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for advice for A1200 keyboard repair frame support.Hardware 7 02 January 2019 11:14
Amiga 2000 Rev 4.2 repair advice trickywookie support.Hardware 7 14 November 2018 23:23
A500 Revision 3 Repair Druon support.Hardware 12 06 November 2018 22:54
A500 Rev 8 repair J3 a500guy Hardware mods 2 29 August 2018 05:21
BlizzardPPC needing repair/advice Z3k support.Hardware 5 28 April 2014 19:15

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 13:43.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Page generated in 0.06058 seconds with 16 queries