I've heard horror stories of Amiga batteries destroying boards so I thought I'd replace mine with a coin cell battery. It turned out that the memory expansion was in really good condition and the battery looked brand new, but still it had to go.
I ordered a replacement battery from Amiga Kit on Ebay and off I went.
First things first the RF shield has three soldered tabs to deal with. I used my desoldering gun to get most of the solder off and then a hot iron and heaps of solder wick. A couple of plastic spudgers are also useful to help lever out the tab while heating it with your soldering iron.
Off with the old and on with then new.
While I was in there I decided to replace the capacitors as well.
In the end it turned out very well, although the RF case was a little tight going back on. I didn't resolder the tabs, I just used some Kapton tape to secure it together.
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