"David C. Partridge" wrote in message
...
Guessing late 70s it's in the bright-up circuit of the D85 or D75 scopes.

TR353 FWIW if you have the circuit diagram (I blew it while probing and
hand
slipped).

Dave

"N Cook" wrote in message
...
what sort of date ?

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


"David C. Partridge" wrote in message
.. .
Body marked as follows

FPN
4249
EBC

has blue paint dab on back. It's pretty clear what the EBC marking
means.

I know it is PNP from the schematic which says type is TO203 but I
don't
recognise that either.

--
Dave Partridge (remove xwy from replyto email address)







I would suggest try a complement to 2N199(0U?)/(OU?) , used in D75 circuit
as complement to your duff one,adjusting pinning if necessary. FPN.... maybe
Fairchild as Telequipment tied in with Tektronix around time of D75.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/