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I will try to help but fortunately didnt have to deal with
many of the newer NAP sets.....
Go to CRT socket . Find 3 resistors usually abt 18K 2watt.
They all connect at one end.
Where they connect hang a meter ( DC ) fire the set & you
should get 200 vdc before the set shuts down.
If you DO get 200v let us know.
If you DONT follow the wire back to the chassis you find the following.
I will describe best I can the circuit without a manual, as almost all
sets are made the same here.
From a flyback pin there is a low value resistor 1ohm +-
1/2w +- it is used as a fuse.
This feeds the anode of a diode that may have a disc cap
across it.
Off the cathode there is a cap usually 4.7 or 10mfd 350 + v
From there the wire goes to the CRT socket, thats
your 200V supply.
BTW I doubt there is a zener in the circuit...............
The resistor, diode & cap are all high failure parts. If one
is gone change them all.
Let us know how you do !
73 ZENO
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