Obsolete transistors

[Måsen]

Hi!

Transistors V712 and V713, Motorola 7320001 (TO3), on this power amplifier are dead.
I can not find new transistors.
Can I use replacement transistors? What brand/type?
Transistors V710/V711 are BD529/BD530.

http://hem.bredband.net/scarl/Sonab.jpg

/Stefan

 

[Netlist]

These are tough ones but something like a MJ15001 or so would surely do the trick.

/Hugo 🙂

 

[djk]

They were probably 2N3055.

MJ15003
MJ15015
MJ15022/24
MJ21194

 

[cengizaltas]

Hi, i have seen repaired sonab output they are replaced by Transistor BDX10.i checked it seems ok.

 

[JMFahey]

Thanks for your post but please notice the thread is 10 years old.