dkaiser
Fizmo Main Board
The main board from an Ensoniq Fizmo synth.
The voltage regulator (far left edge of board and nestled between the two sides of the heatsink and labelled LM2940T) is one of the types that goes bad and sends too much power to the rest of the board. It's rated for 1A but when it goes out it draw more than that.
I'm replacing it with a brand new MC7805CT which is a LDO (low-dropout option) 5V rated for 1.5A, and going to use a new external power adapter (wall wart) which is 1.3A.
Fizmo Main Board
The main board from an Ensoniq Fizmo synth.
The voltage regulator (far left edge of board and nestled between the two sides of the heatsink and labelled LM2940T) is one of the types that goes bad and sends too much power to the rest of the board. It's rated for 1A but when it goes out it draw more than that.
I'm replacing it with a brand new MC7805CT which is a LDO (low-dropout option) 5V rated for 1.5A, and going to use a new external power adapter (wall wart) which is 1.3A.