Yes it would be L53 but this one dont have the cap. That was a few yrs
later.
If think the DGS is stuck on just unplug the 2 red wires & put a jumper on the chassis pins. Thats usually just a broken thermistor.
For focus take the rear cover & door of the FBT cage off. There is a focus
stick & high ohm resistors & odds and ends back there. Stick is most likely.
then resistor. Sometimes the board will carbon up & arc. If any resistors are burned change the stick also.
The 95 V problem makes no sense. If the stage it feeds is dead it could go up
but besides the focus the sets running pretty good. Could be a mistake in Sams or a its mis wired.
73 Zeno
LFOD !