Akai MG1214 Mixer

[bruce 1]

Hi all,

I have just bought two of these beasts for the sum of £199 pounds, but they are not working! ......i knew that before hand.
They both power up but one plays the tape etc and seems to fully work but nothing on the output, even through the headphone socket, the other one has a problem with the recording tape deck. Does anybody know what might be the problem with the output, or should i swap the recording tape deck over?
Can anyone help, or have schematic plans???

Thanks,

Bruce.