M0001 power sweep/video board dead

MacintoshClassic

New Tinkerer
Dec 17, 2022
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Need help on how to assess this M0001 analog board.

For context; almost a year ago now this board stop working with a loud pop and accidentally turning it on without being connected to the motherboard fried some components (r45, r60, q9E, q10), which i replaced. Once everything was soldered i reassemble the computer, plug it in… absolutely nothing. Swapped in a good fuse but that didn’t change anything so the fault is something else. Attached some pics to show what it looks like currently. I know someone who could check connections with the multimeter but whats a good place to start?
 

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SteveHere

Tinkerer
There was a book published in 1990 called "Macintosh Repair & Upgrade Secrets" by Larry Pina. It's an amazing book with practical steps you can follow for most Compact Mac troubleshooting. It's been a big help to me many times since @ScutBoy recommended it too me. You can find scans of this book online.
 
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ScutBoy

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Pina also did a book called "The Dead Mac Scrolls" which which is a sequel to the above moving into even later machines. You will generally find both together - get them both!
 
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fred1212

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Jul 27, 2022
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In the photo it looks like you may have a solder bridge on Q10. Also some solder balls to remove
 

Kai Robinson

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There was a book published in 1990 called "Macintosh Repair & Upgrade Secrets" by Larry Pina. It's an amazing book with practical steps you can follow for most Compact Mac troubleshooting. It's been a big help to me many times since @ScutBoy recommended it too me. You can find scans of this book online.
This PDF is attached in our resources section.