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Old 9th May 2005, 06:29 AM   #1
Pozar is offline Pozar  Croatia
diyAudio Member
 
Join Date: Jan 2005
Location: Dalj on Donau
Default Strange old BJT

Hi!
Before some days I acquire one old Quadro receiver with discrete
output circuitry. One chanel was dead so I found one output
transistors are blow. Problems then started: on this particular device was mark ...Hirel, 218, Q, 110017.
Amp is runing on voltage about 60..70V rail to rail.
How to replace this kind of device.

Please help me with some solution.
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