Over on the CRG discord I had been trying to help Twilight1964 with his A600. We where fairly sure it had a reset problem but its always difficult to diagnose problems without having the machine in front of you.
So now that I've got it, surely something like a reset issue should be easy enough to fix... Things are rarely that simple in this retro hobby and this Amiga 600 certainly put up quiet the fight. Yes it has a reset problem but that's only the beginning of the problems.
Video Links
Amiga Guides - https://sites.google.com/one-n.co.uk/amiga-guides/home
Amiga Schematics - https://www.amigawiki.org/doku.php?id=en:service:schematics
Amiga PCB Explorer - https://www.amigapcb.org/
CRG Links
CRG-2 - https://www.youtube.com/@UCDFfWx7km9M8qRB9x5-_LjQ
CRG Patreon - https://www.patreon.com/user?u=13919007
CRG Discord - https://discord.gg/kx2FS8TSWV
CRG X (Twitter) - https://twitter.com/YT_CRG
Chapters
00:00 Intro
00:58 Letter
01:38 Opening up
02:38 Inspecting the previous work and damage
11:32 Patch wires
13:06 Copper tape pads
19:50 Another broken trace
20:19 Reviewing the work and a potentially cracked joint
23:23 First test
23:49 Still not resetting
30:57 HALT
33:24 RAM
35:41 ROM probing
39:29 Cracks
41:20 Test after reflow
43:01 Next problem
44:22 Composite problems
46:10 ATK and the next problem
50:20 Keyboard cleaning
52:00 Soft reset
54:27 Conclusion