¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

TM504 - who moved my transistors?


 

Good day,

While working on a troublesome plugin, I had cause to open up my TM504 to check the power transistors (as one does). I am surprised to find that Q22 and Q30 (an NPN from one middle slot, a PNP from another) have been cleanly relocated from the PCB to a location about 6" away, and heat sunk to a chassis member there. Fancy color-striped wire was used, and heat shrink etc: it looks like a pro job. Anybody know what's going on here?

And you're going to ask me if they are the OEM PNs; that will require more disassembly.

Join [email protected] to automatically receive all group messages.