N4212 replacement

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kooma

Well-known member
Joined
Jan 26, 2006
Messages
473
Location
Espoo-Finland
I've got broken hk3600 amp and seems like this transistor is broken..
never bumped into these "Silicon NPN epitaxial planer transistor with built in resistors."
and at quick look seems to be hard to find one locally,
can I replace it with normal npn+resistors!?

broken one is Q711 in schematics.
 

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RuudNL said:
It looks like an NPN transistor and two 22 K.ohm resistors:
http://pdf1.alldatasheet.com/datasheet-pdf/view/14385/PANASONIC/UN4212.html
I thought it would work with any npn+resistors,
but either I did something wrong or theres more to it.
-> couldnt get it to work.
 

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