Mcintosh MA 2275 Schematic Required

[Umberto Vanni]

Hi everyone. This is my first post on here.

Anyone got this amp and had this particular problem....

I am getting coneflap through the left channel only when i use the TT. However the coneflap is not the problem. The problem is that the right channel is not letting through anything below about 25Hz whereas the left channel is going right down to about 1Hz. I have verified this with a function generator. Anyone know what the problem could be? The amp has been repaired before (not by me) due to a volume mismatch.

I could probably repair it myself but i need a circuit diagram. Anyone got one?

[burbeck]

hi all
im looking for a service manual/ schematic for this model.

fault i have noisey on power down bothe channels

any help apprietiated

[Umberto Vanni]

Originally posted by burbeck
hi all
im looking for a service manual/ schematic for this model.

fault i have noisey on power down bothe channels

any help apprietiated

Is it a loud "pop" when you go into standby? This is quite normal. Mines does it aswell.

[burbeck]

yes and it has got progressively worse, now it is so bad the customer fears his speakers will be damaged.