Clicking relay no picture no audio no power light red or blue

The clicks are coming from a mechanical relay in the standby supply for voltage---the standby power supply runs 7/24 if set is plugged into power.

What I would do if you are able is open set and on power board (power cord goes to it) look for and replace any filter caps that are puffed up there--the relay is possible but rarely bad in this way unless a solder connection under it is bad.

If caps are good you have a connection or bad part near the relay that likely is causing this problem.

Look closely at filter caps in power supply:






even one that is slightly puffed up can cause this, if find that and need to know what and how let me know.

Tries tv unplug,replug it back like about an hour later.Now the tv should be resetting itself back to the factory setting.The tv now should work again.If not the problems and the causes is the tv power supply board problems.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

you can get replacement boards from www.tvrepairworld.com you can call or send them a email they respond quickly.

Could be power supply failure

Please clarify that we are talking about the central vac LED/switch panel panel and plugging it into a 110 V wall receptacle.
If I understand when you unplug from the power source ,then plug back in the green LED comes on, looking normal ? But when you manually activate the switch on the motor housing of the vac itself the vac does not start and the LED goes out, so no green or red LED at that point?
If this is the case , Kenmore CV's built approx 5 years ago (MADE by EUREKA) and prior had a circuit board with attached cord (as opposed to detachable) which was prone to relay failure. There were several symptoms, most common was that the relay on that switch panel /circuit board would fuse on and the vac would continue to run when the hose was detached from the wall.However some I worked on from that era had exactly the same symptom you describe. If your unit is between 5 and 10 years old and this sounds accurate, you can unscrew this curved side panel relay with one philips screw. Inside on the PCB will be an L shaped black or white 24volt relay, generally rated at 10 amps. The replacement board or relay will be rated at least 24V/ 15 amps or more. If you can isolate your motor and test it separtely with a power cord or meter , the realy/board will be the only control componnet left.
If you have a small tipped soldering IRON, not a gun, you can generally find a replacement relay to rebuild the board for about $6 at an electronics parts store. Otherwise you will need to replace the control board itself, anywhere form $45 to $70 plus service call if you have a tech come out to the house, and the tech will just unscrew , detach wires and replace the board, no repair , approx 15 minutes work. This will likely cost over $100.
Please post back with your results

Leave relay alone! check those big fat transistors , usually shorted...

Magnavox suggests unplugging the tv for exactly 10 minutes to reset the tv---try that---or call the service number for assistance

relay clicking is a power board failure --- part of the board still works to supply power to the flashing lights--- the lights are related to an error code while in protection mode

This is a typical condition if the power supply has failed or a power-consuming circuit the supply services has exceeded a predetermined current draw. The relay you hear is preventing further damage or even fire.
You will need local tech help with this. 

I don't know why but this got my TV on.
I took off the back cover and found the source of the clicking.
Two blue plastic rectangular relays in the exact middle.
When I pushed the power button, I felt the top relay click, and I saw a flash from the bottom one. (they are right next to each other)
I took a hair dryer and placed it over the two relays for about 1 minute and tried the power.
It clicked only 4 times and then came on!!!!!!!!!
For some reason heat helps the relay.
If anyone is a tech and can explain this, please do.
Good luck!!!!
My tv is on and it didn't cost me anything.
I just can't turn it off now!!!