Rca arcing and hissing

If model number is correct (on rear of set in small letters it should be a PTK 195 chassis) you have a high voltage lead somewhere that is arcing.

This set did have issues with the High Voltage transformer failing and also that High Voltage (well over 10,000 volts) gets distributed to each of the 3 picture tubes this model uses.

Sometimes the lead where it connects to one of the tubes begins to arc---it is coated with white silcone to prevent this.

If arcing around the entry point to any of the tubes sooner or later it will take the set down--destroy parts that are currently ok.

Usually we locate this by turning set on with back off and looking and listening when set is turned on---If a frying or pop is heard up above the main boards--one of the entry points (called the 2nd Anode) is arcing.

I have seen them arc hard enough and long enough to actually crack and break the glass wall of the picture tube.

It sounds like you have a high voltage lead that's arcing, most likely one of the high voltage splitter leads. It may be either a connection that's coming loose, or that has been slowly degrading through periodic arcing, and is now getting worse. That's a section of the TV that I seriouslyy recommend you have a professional troubleshoot, as there can be upwards of 32,000 volts d.c. running in it.

for sure your tv has power as indicated by your flyback hissing it also indicates leaking high voltage that might destroyed your vertical or any other parts near your flyback ,the flyback itself should be replaced for its high voltage arcing can ruin so many components

Just unhook the leads and away you go..........................

2 THINGS THAT USUALLY CAUSE THIS PROBLEM IS
1) THERE IS AN ARC FROM ONE OF THE PICTURE TUBE ANODE LEADS--15.00-- THE TUBES ARE STILL GOOD , JUST THE LEAD IS BAD---NOT EASY TO REPLACE ,,YOU HAVE TO CUT THE OLD ONE OUT AND REPLACE USING SEALANT ....
2) A PART CALLLED A HIGH VOLTAGE BLOCK--75.00--THIS PART TAKES HV FROM A FLYBACK TRANSFORMER ,,,SPLITS THE VOLTAGE TO GO TO THE 3 PICTURE TUBES
KEEP IN MIND ,,IF YOU HEAR A POP--IT'S USUALLY A HIGH VOLTAGE ARCING TO SOME METAL--YOU ARE BETTER NOT PLAYING THE TV

THESE JOBS ARE BEST DONE BY TECH'S -TUNICA

this is the the fly back transformer ,replace it or if you are not a repair man ,please contact the nearest repair shop.(risk of shock hazard -high voltage!!!).

do you have heater voltage because if you are hearing high voltage you may need to replace a resistor and capacitor in the 200v circuit or you could possibly have a anode not seated right arcing on somthing or a bad flyback

there is loose contact on the high voltage section in your tv.what you are going to do is open it,and reheat  with soldering iron and a piece of soldering lead the video chroma section and the high voltage section,near the flyback

You apparently have a high voltage arc. Possibly the anode lead to your picture tube. Also the flyback transformer could be arcing. If you're not experience with tv repair, you need to have a tech check it for you. The circuits operate at very high voltage and if you get into it you can get a possibly fatal electrical shock. Be careful !!! Stargazer

Sounds like you have a high voltage arc if the sound is not coming through the speakers. Possibly the high voltage leads are not pushed in all the way. Be careful! Make sure the set is off and you may also want to ground these leads before you touch them. Youcan get a nasty shock if you don't.