Just acquired a Marantz 1180DC---Faceplate pristene--Got 4 replacement knobs from Ebay---All functions & inputs work---but-----output from speakers 1 & 2 becomes intermittant when volume is advanced above approx 1/3. Sometimes takes several minutes before speakers activate, when turned "on". Looking to restore or repair---Am in N. Nevada in Carson City area---If you can, or know who can. Might attempt it myself, If I had some info----was ET in USN back when it was tubes, nuvistors, NPN & PNP & diodes only---Haven't troubleshot since then, and no longer have sig gen, scope, etc. -----HELP !!!!!!!!!!---Rik