Samsung smart tv 40 problems

The screen being green on your TV is either caused by a loose or damaged cable connection of a media component to or from the TV or it could be that the TV's T con board is having problems and it would be more cheaper to bu a new TV than to try and fix the one that you have is broken.

try checking audio cables if ok audio settings if ok try external speaker if able

try window 10 dpi fix

I can't find a Samsung UN40DJ5200 TV anywhere. I did find a manual for the UN40J5200 on the product page: https://www.samsung.com/us/televisions-home-theater/tvs/full-hd-tvs/led-j5200-series-smart-tv-40-class-40-diag-un40j5200afxza/ . Click on the link for See All Support for additional documentation. Then scroll down to the Manuals section. You need to accept the Samsung terms of use to download the documents. The direct link to the E-Manual is currently http://downloadcenter.samsung.com/content/UM/201504/20150417115111056/ENG-US_NMATSCJ-1.104-0410.pdf .

I hope this helps.

Cindy Wells

It is a common problem for a Samsung LED TV, the problem is defective LED back lights strips.

You mention two separate issues, WiFi and smart hub. As you know Samsung built in manual is the worst idea ever. There is no picture of the complete rear panel connection for example.
If the smart hub is the actual WiFi antenna then if your system doesn't recognize Smart Hub then you have a bad smart hub.
to test smart hub plug something into hub ( DVD HDMI, video game) If your remote has smart hub button press and see what appears. Otherwise select source on remote see if your attached item appears. (That would indicate smart hub does talk to TV)!
Since you can access your network when hard wired your network password is stored.
Once you have verified Smart Hub is functional then work on WiFi.
i will say my Samsung is 3 ft from my router and hard wired for better streaming speed.
I use Bluetooth access to share photos from IPads.
I would leave TV hard wired.

Here is what to check when your TV is turned on, power light is ON, but no picture is seen or sound is heard:

1 - Be sure the component you are using (Xbox, Cable, SAT, ROKU) is turned ON.
2 - Check to be sure all cable and cords are securely connected to the TV inputs and component outputs.
3 - Make sure you are on the correct input as some TV's will show a black screen if there is nothing connected to that input.
4 - Unplug the input you are trying to use from the TV (such as an HDMI Cable) and plug it back in.
5 - Check for signs of damage on all cords and cables from the TV to all components.
6 - Make sure the TV is not in ENERGY SAVE MODE, press the button on the remote control to go back to normal mode.
7 - Unplug the TV for 10 minutes to see if there was a temporary one time issue with the TV.
8 - Disconnect the TV from power for 2 minutes, then when plugging it back in PRESS AND HOLD THE POWER BUTTON ON THE TV FOR 10 to 20 SECONDS to try and force the TV to reset.
9 - If after checking all these different issues, you may have a Faulty Power Supply Board, A Bad Capacitor on the Power Supply Board, Loose Wire Harness, or Loose Ribbon Connector in the TV itself.
10 - Most likely when a TV has the power light ON but NO PICTURE and NO SOUND, it is the Power Supply Board that has failed.

BTW, here are solutions for you to play iTunes movies on Samsung smart TV

the serial # should be on the set somewhere. you cant find the se # using the model #

If other electronics are too close to a TV this is a common problem. Try moving the 2 items at least 2 foot away and see if that helps.
You may not want to leave them there, but at least you will know if that's the problem!