I've had it for awhile and finally found someone to work on it and the rest my vintage equipment locally. Suppose to be very good at what he does so I'm having him go thru it and bring it back to life. Looking for advice on any mods that can or need to be done to a QRX-7500 that I should know about. Next he's doing an Eico ST70 tube amp and matching tuner that I've found a fairly comprehensive list of mods that should be done to it but nothing on the Qrx7500...Thanks