- #1
Planobilly
- 440
- 105
It looks like there is no replacement for the VFETs that were made by Yamaha or Sony. So, if a amp uses these output transistors and they have failed then the amp is not repairable.
The amp in question is a Yamaha B-2. One side is working without issue. The other side is not working. The output transistors may be OK but because I can not replace them I want to be sure first.
How can VFETs be tested both in circuit and out of the circuit? I can not find any data sheet for the Yamaha VFESs.
Cheers,
Billy
The amp in question is a Yamaha B-2. One side is working without issue. The other side is not working. The output transistors may be OK but because I can not replace them I want to be sure first.
How can VFETs be tested both in circuit and out of the circuit? I can not find any data sheet for the Yamaha VFESs.
Cheers,
Billy