Macintosh IIsi - speaker very quiet

[egrath]

Hi,

the speaker of my IIsi shows a interesting behavior: It's very quiet, no matter which level I set in the control panel. Essentially there are only two states: very quiet for all levels >0, and completely silent (as expected) for 0.

Any ideas what could be the reason for this or which component could be defective and needs to be replaced?

With kind regards,
Egon

 

[robin-fo]

Clean the speaker contacts

 

[egrath]

Thanks, I try that. But just out of curiosity, if the contacts are corroded and therefore have a higher resistance, shouldn't there be more levels than just quiet and silent?