Thank you Lucky Dog: The 435 much like the 426, 447, 450, are all what I would describe as the simple design years with simple relays and switches. From what I've read around 1978 Rockola began to use what are sometimes called the dreaded micro processor boards and those boards when a problem occures much like with a Pac-Man arcade game must be sent out for testing and repair. A pricey venture. The early machines like your 435 seem quite reliable and possibly you may never ever have a problem...sweet... Our 426 on the other hand I think may have had a hard life and upon inspection I can see someone has done repairs in the past.. It also has two other issues I will be looking into
; every once in a while the record when finished just goes around and around and does not eject, but I have found a simple push on micro switch #1 finishes the cycle and puts the record back in file. I think this may be a simple adjustment of the micro switch and its relationship to the cam that activates it. .. It looks like time and use may have worn the cam down somewhat. Also the write-in motor seems at times to operate quite sluggish, turning slowly with appearent drag. Possibily cleaning, lubrication or replacement is required who knows but when those issues are resolved I will post whatever I discover...One thing I have found that pretty much any parts you may need can be found with very little effort and I say a big yahoo to that. .