TS 50 buzzing sound

[Chris_1723]

Hello everyone,
nowadays I have a problem with my TS-50 unit.
It makes a buzzing sound thru the speaker, but when I connect the headphones everything works perfect.
When I hear the buzz, with the AF control, the buzzing changes the noise.
AF with the headphones connected works perfectly changing the volume.

Any ideas ?
I watched carefully inside and not capacitors or resistors with problems.
Any clue will be very appreciated.
Best Regards and 73s
Chris

 

[sp5it]

Connect to linear PS, dummy load and check.