Did My Solenoid Fry in my RCA VDT-350?

[TinCanAlley]

Many years ago members here helped my fix my RCA, and after all these years, it has a new problem. I sat idle for over a year and when I went to play a tape, the reels weren't turning. At first I figured one of the new belts I had installed was bad, but upon inspection, all belts are good, all pulleys are turning, etc. Upon closer inspection I noticed the capstan roller wasn't moving to pinch the tape against the capstan. I manually moved it and moved it and the tape played. So I checked it for binding and all was well. The piston of the solenoid moved freely, but it wasn't engaging.

The SM has schematics and it seems there is a constant 19.86V (I measured 20.5V on both leads from the moment the power is turned on) on the two leads for the solenoid, and from what I can tell, when play is selected, it drops to 17.7V (I measured 17.3V when play is pressed). At no time (20V or 17V) does the solenoid move. I understand the workings of a solenoid, but not sure why there is 20V constant and 17V during play). Doesn't this mean the solenoid is basically charged the entire time and should be retracting? The schematic shows the leads and on goes directly to the lead of the winding and the other one as well, but it has a diode on it as well as a bunch of transistors that are switches, drivers and pause.

Anyway, I really don't know where to begin with this one. I can attach some pics of the solenoid and the section of the schematics if that will help.

Thanks