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I've finally got a replacement for my desoldering station, after giving up on my original supplier and going elsewhere. Now I can catch up on all the jobs which are likely to need a lot of desoldering, and have been old hold whilst I've been waiting. Here we have another Commodore 64 to repair. The initial fault was a black screen.
replace a VIC20 Kernal ROM.
2022 Update: After much experience, I now replace any of the Micron chips with the MT logo on as so many of them fail, it's better to replace the lot.