picked up a 1979 Sony Trinitron KV5100 New in box

[Popester]

I’m not sure the 5000, or 5100 model had any pincushion circuitry. Don’t remember. I have both models. Does yours have econoquick?

[Popester]

Never mind. Looking closer at the first picture it has econoquick silkscreens on the sun filter. KV-5000’s didn’t have econoquick. I believe the heater had some voltage on it at all time that it was plugged into AC power.

[Devicemodder]

Originally Posted by Popester

I’m not sure the 5000, or 5100 model had any pincushion circuitry. Don’t remember. I have both models. Does yours have econoquick?

yes it does have econoquick, says so below the UHF knob. and there are unpopulated pads on one of the pcbs for a pincusion correction circuit.

[zeno]

These were a popular "arm" sets in hospitals especially ICU's.
They would mount an SO259 on top & a PL250 on the arm to
mount it. This carried 25VAC with the RF riding on it. Inside they added
a small 12 V power supply & stripped off the RF.
After about 10 yrs most started using 9" Zeniths using the same scheme.
They held up well considering years of almost constant use.

73 Zeno
LFOD !

[Devicemodder]

that's a cool piece of historical fact right there.