Hello,

My english is not so good !


Is the power supply, or is the speaker defective?
The hum is always there (at the radio and cassette). If the volume is on very quietly, you can hear the hum very clear.


Peter

Member Kittmaster would be the candidate for this question.

Welcome Hellraiser to the S2G forum.

quote:

Originally posted by Hellraiser:
Hello,

My english is not so good !

Is the power supply, or is the speaker defective?

If the volume is on very quietly, you can hear the hum very clear.

Peter

The likely culprit is a bad solder joint or ground. Also try clenaing the controls. I find this to be the case more often than not. After that I would suspect the transformer.

There's hum in both channels or one ?
Have you tried with an external supply. I'm almost sure that if you run it on batteries no hum would be heard, but you can test this one too.
A missing ground could be also.
You can try replacing the supply filter capacitor (the huge one). It would be somewhere betwen 1000uF and 3300uf.

hier 2 videos, wo man das brummen im linken lautsprecher hören kann.

http://rapidshare.com/files/103114637/brummen.AVI
http://rapidshare.com/files/103116639/brummen_mit_musik.AVI

quote:

Originally posted by SUCCESS:
You can try replacing the supply filter capacitor (the huge one). It would be somewhere betwen 1000uF and 3300uf.