My old but trusty B&K av5000 series ii finally let me down. One of the channels started distorting really badly. Tracing the circuit back led me to a blown Q12 2n3440. Everything else seems to test fine.
Should I be trying to find original Motorola transisters or will newer replacements from Central Semiconductor work just as well?
https://www.mouser.ca/ProductDetail/Central-Semiconductor/2N3440-PBFREE/?qs=u16ybLDytRbmQdZPnRs14A%3D%3D
Assuming if if Q12 is replaced its a good idea to also replace Q4?
Likely recap while its apart. Looking at the schematic is there anything else to inspect or replace?
Thanks!
Should I be trying to find original Motorola transisters or will newer replacements from Central Semiconductor work just as well?
https://www.mouser.ca/ProductDetail/Central-Semiconductor/2N3440-PBFREE/?qs=u16ybLDytRbmQdZPnRs14A%3D%3D
Assuming if if Q12 is replaced its a good idea to also replace Q4?
Likely recap while its apart. Looking at the schematic is there anything else to inspect or replace?
Thanks!
A 2N3440 is a generic transistor mostly anything with the same parameters is fine. I would order from Mouser and fit the original type.
Q4 ... only if it is faulty.
Q4 ... only if it is faulty.
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Agree with Jon, I’ve replaced only that part and with the Central Semi from Mouser and worked just fine.