Econoquick (Instant On) Removal

[zenith2134]

Good morning, I posted last week about those Sony's I found and repaired, and now I have something for slight discussion- Instant-On. The '77 KV1712 has a badge called 'Econoquick' on the front below the tube, and I cant help but notice how, if it is instant-on, it doesnt seem to function. My theory is that its just a slow one, because the filament is lit. This is all the more reason to disable the feature.
I seem to remember how you could wire in a new switch which disables the circuit, or use an inline switch, but I would like to actually remove whatever it is which lights the crt heater and never have to worry about this again.
I am this critical because I now did some work to the chassis, including replacing many capacitors and some reistors, and set rgb backgrounds and greyscale, which resulted in a great pix.

My only other set right now with instant-on is a 1974 Panasonic 12" SS portable, believe it or not. Nice set, with removable front screen cover, labeled "Speed-o-Vision". It really does snap to life, but since I rarely use that one, I can just unplug it. Thanks for any ideas. Have a good one.