On button keeps clicking on and off, unit won't turn on. You have to unplug it to stop this action

I would certainly find a bad capacitor in the standby(deflection area). You are not getting the correct voltage to keep this set in standby. A bad capacitor will over correct the voltage,and create a high voltage shut down. I have not repaired this particular model. I would look for a 160 to 250 volt capacitor (sometimes two) at 1 Mf, 2.2, 3.3 or 4.7Mf. These will always go down. Please inspect check and replace these. Your TV may come back on. If it will not power up, chances you have a bad picture tube.A bad picture tube will also do as you describe (Rare,but can happen). Thanks for asking and show all hands of support!

Hello
This is a short circuit indication. There will be some kind of circuit short on the main board of this tV. Just check it. The most common fault I detected so far is with horizontal output section. Check that section for any faulty or leaky components. The work is a very skilled one, and you must have through knoledge in electronics, and all testing equipements and you must have the awareness to use these testin equipments. Eventhough the fault is a simple one, detecting the actual fault point is a very skilled job indeed. Check these I've stated above. If you want anymore assistance from me, feel free to get me by FixYa. OK.