hifi engine

Akai X-V Service Manual wanted

I've resurrected my Akai X-V portable reel-to-reel recorder and have come across a small problem when trying to do a service.

The right channel is exhibiting some noise when playing back recordings. There are occasional 'bursts' of a static-like noise. I suspect it is a either a noisy cap or transistor - I think the transistors are germanium on this 1969-70 model. It does not sound like a noisy pot.

Does any forum member have a circuit diagram/service sheet for this model.
I would be most grateful.