Hope this works..!

JonB · 05 April 2013, 19:46

Here's my first attempt at fixing an A500+ that had lots of battery corrosion. Gary has a new socket and the 74LS244N has some track fixes (corrosion ruined every pad on that side of the board). Repairs were done with prototyping wire.

I have done some tests and the results are not 100%, sadly, but I'm too tired to go back and fix it.

Retrofan · 05 April 2013, 20:14

Ejem... Sorry, I would forget about fixing that, it seems too bad

ElectroBlaster · 05 April 2013, 21:58

Man that looks like alot of work! But thumbs up for even attempting it, I hope you get it bug fixed

I did the same, but nowhere near as difficult with an old m-audio oxygen keyboard. The original owner had got frustrated with the usb port being loose and broke it, lifted tracks etc. I ended up putting in a new port/socket, soldering what was good and then bridging with cut up staples. It works perfectly now!

JonB · 06 April 2013, 10:41

Quote:

Originally Posted by Retrofan

Ejem... Sorry, I would forget about fixing that, it seems too bad

I have to try, the machine is otherwise in good condition and someone gave it to me. Continuity testing indicates that it's not quite as bad as it looks...

Lord Aga · 06 April 2013, 10:57

Don't give up mate ! Every Amiga is well worth saving

JonB · 06 April 2013, 13:08

Well... I'll be after a motherboard if this fails

JonB · 10 April 2013, 21:15

Well, I have finished the repair and checked all connections to the 74LS244N. All is good.

However, I got the DREADED BLACK SCREEN OF DEATH.

Is it likely that this is caused by other corrosion near the battery, or is it terminal? What I'm trying to ask is, given the position of the battery, is it likely a corroded track could kill it totally, or might I expect it to go some way through the boot process?

The 244N is connected to another chip of similar size and DATA PATH is printed on the PCB. The same pair of chips appear right next to it. What are they actually for?

05 April 2013, 19:46	#1
JonB Registered User Join Date: Apr 2013 Location: Sussex Posts: 42	Hope this works..! Here's my first attempt at fixing an A500+ that had lots of battery corrosion. Gary has a new socket and the 74LS244N has some track fixes (corrosion ruined every pad on that side of the board). Repairs were done with prototyping wire. I have done some tests and the results are not 100%, sadly, but I'm too tired to go back and fix it. Attached Thumbnails Last edited by JonB; 05 April 2013 at 20:10.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Starting to lose hope :(	ElectroBlaster	support.Hardware	2	18 November 2012 01:32
Episode IV: A New Hope	Doc Mindie	support.Hardware	3	12 November 2011 10:17
Haddrive partitions...any hope?	xlar54	support.Hardware	5	31 December 2009 19:32
A4000T PSU - Hope someone can help	ag_woodward	support.Hardware	4	30 January 2007 14:26
I hope someone can help me	Pyromania	MarketPlace	7	02 October 2002 05:51

05 April 2013, 20:14	#2
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,185	Ejem... Sorry, I would forget about fixing that, it seems too bad

05 April 2013, 21:58	#3
ElectroBlaster Junior Member Join Date: Mar 2002 Location: Exeter, Devon, UK Age: 49 Posts: 1,705	Man that looks like alot of work! But thumbs up for even attempting it, I hope you get it bug fixed I did the same, but nowhere near as difficult with an old m-audio oxygen keyboard. The original owner had got frustrated with the usb port being loose and broke it, lifted tracks etc. I ended up putting in a new port/socket, soldering what was good and then bridging with cut up staples. It works perfectly now!

06 April 2013, 10:57	#5
Lord Aga MI clan prevails Join Date: Jul 2010 Location: Belgrade, Serbia Posts: 1,443	Don't give up mate ! Every Amiga is well worth saving

06 April 2013, 13:08	#6
JonB Registered User Join Date: Apr 2013 Location: Sussex Posts: 42	Well... I'll be after a motherboard if this fails

10 April 2013, 21:15	#7
JonB Registered User Join Date: Apr 2013 Location: Sussex Posts: 42	Well, I have finished the repair and checked all connections to the 74LS244N. All is good. However, I got the DREADED BLACK SCREEN OF DEATH. Is it likely that this is caused by other corrosion near the battery, or is it terminal? What I'm trying to ask is, given the position of the battery, is it likely a corroded track could kill it totally, or might I expect it to go some way through the boot process? The 244N is connected to another chip of similar size and DATA PATH is printed on the PCB. The same pair of chips appear right next to it. What are they actually for?

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