When I try and turn on the tv, it just clicks and then shuts off? How much to repair

Did you try repairing the PS with a repair kit first then replace both the boards after that?

Easiest TV repair - How to Fix Power [TV turns off, freezes ...

? 6:44
https://www.youtube.com/watch?v=OKklZpTGBGU
Apr 27, 2014 - Uploaded by Keith Fox
I demonstrate in this video how to repair a Sanyo by swap out the... the Sanyo DP47460 that I'm having an issue with. after ~ 40minutes of watching, if I attempt to change the channel or adjust the volume, the picture/screen freezes. ... After ~ 20 seconds, theTV will automatically shut off, then turn back on.

SAMSUNG TV REPAIR- TURNS OFF RANDOMLY - YouTube

? 9:24
https://www.youtube.com/watch?v=7Rj22VNhKXg
Jun 25, 2012 - Uploaded by Tampatec
EASY HOW TO FIX SAMSUNG TV- TURNS OFF RANDOMLY Clicking ... Hi, I've got a Samsung LED TV that switches off after20 seconds and remains off. .... after about couple of minutes, is this the same problem with the tv in the video? .... 10:32. How to repair a Samsung LCD TV with a flashing standby ...

TV Turns On, Backlight Inverter Immediately Turns Off TV ..

Depending on the age of your tv, if you hear a rapid clicking, it seems like your ballast is starting to turn on your tv but it's not able to. (1) Check your lamp, (2) reset the lamp timer, (3) make sure the cover panel is all the way. the positioning sensor might not be detecting the cover all the way in.
Personally I think you're experiencing a ballast problem.

It has an overload and needs to be repaired.

Ur convergence ics it dead,also cause this prob.Must replaced the ICS,tries these websites for convergence kit,know how to solders?Tries Tv repair world.com,Tv repair kits.

t does sound like a bulb problem, either its over heating and shutting off to protect itself, or its already shot. Give a TV repair shop a call and see if they can give you an approximate price, then decide to ditch or repair it.

It's serviceable, and will need service on either the thermistor that is turning the set off, and/or the parts of the circuit that are overheating the thermistor.

1) No recall

2)IHVT # 257805 or ASTI 2078 .....211.70 is good investment,

3)Temp irrelevat

..........................................T.

You probably have a bad flyback transformer (high voltage). You might want to get an estimate to find out if it is worth repairing. Stargazer