[sdiy] Vintage transistor ID's? !!help!!
Steve Maietta
srmaietta at yahoo.com
Tue Jun 5 17:02:00 CEST 2012
Hey all, I am leading a few of my students on the path of reverse engineering and cloning a vintage Electro-Harmonix guitar amplifier. (A Mike Matthews Freedom Amp)
We're moving right along but are stumped with the ID and finding suitable replacement of a few old, black blob transistors..
In the preamp section:
FS37000
2N5133
In the power amp section:
FS37001
FS37003
These next are big TO3 package, heatsinked. NPN/PNP pair i'm assuming..
FS37004
FS37005
If anyone could help it would be great!!!!
Are these PNP/NPN and what would be a current replacement? wev'e got one week left!
thanks a ton!
~Steve
and yes I plan on sharing all the info and drawings when we're done..
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