Teac 3300s help needed. Mounting the voltage regulator assembly.

T

troublehorse

New Member
While inspecting the innards of a Teac 3300s I removed the Voltage Regulator assembly and when I put everything together I got smoke, then I immediately powered down, and figured out that it was apparently the Voltage Regulator assembly transistor causing a short to the metal piece that holds it, because when I leave the voltage regulator hanging (not mounted) everything works.

I am super confused about how it's connected. Anyone have a picture? The transistor has a gap between itself and the circuit board which makes it seem as though the metal piece it mounts on should go in that gap. I assumed the insulation for the transistor should go between the transistor and the metal piece. The problem is, no matter what the setup, the metal screws are gonna cause a short the the metal mounting piece, I'm super confused. Any help would be appreciated.
 
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The arrangement of parts should look something like the following. Part 1 insulates the transistor or regulator from the heatsink and Part 2 insulates the mounting hardware from the transistor or regulator. You will also need to apply a thin layer of heatsink grease to both sides of Part 1 to provide proper thermal conductivity between the regulator and heatsink.

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Thanks a lot, that answers my question. I guess I was unaware of part #2 and probably lost it while unmounting the board.

I really appreciate it.
 
 
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