hello all
i just restored a technics amplifier SU 300, i replaced the STK (stk4141) and two wire wound resistors .33 ohms 1 w.
every thing started working great, all the controls the volume the sound quality.
but every time i power on the amp a loud buzz echos from the speakers and a big 'tap' upon powering off.
please guide me finding the issue.
thanks in advance
sandeep
2025, November 5 - 06:58
#1
sandeep1974
Hi!
First replace capacitors around IC501, it is a mutin / overload detector. Also replace the small electrolyt capacitors around the STK power amplifier.
Regards,
Jacint
1
ok thanks a lot
0