Fried transistor in PB G4, is there hope?

hayesk

New Tinkerer
Sep 28, 2026
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I dug out my old PowerBook G4 - Aluminum (FW800) and tried to revive it. The drive was dead, so I purchased an IDE->SSD adapter. As soon as I connected it and turned it on, I smelled smoke. After lifting the keyboard I saw this poor little component glowing red and emitting smoke. I don't know if the adapter drew too much power or if it was defective, but now my poor PB is dead. (see attached photo with bulbous component) The PB was working before because I could boot it off of an external FW drive.

I guess my question is is there any hope to source that component (labeled Q26 on the board) or would I be better off trying to find an entire motherboard. I wasn't able to find out what component it was so I don't know if a replacement exists. If anyone has suggestions, I'd appreciate it. Thanks, everyone!
 

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