I need to check unknown source box...but i am unable to find security on hitachi 43hk6t74u tv

The connection for the HDMI connection from the cable box to the TV is the main cause of either a pink or a purple screen. This can be solved here by following these instructions The first step is to make sure that both of the sides of the HDMI cables are properly plugged in as firmly. The second step is to power-cycle the All of the digital unit by removing the power cord from the unit and from the wall.

Allowing app installs from Unknown Sources in Android

1. Navigate to Setting > Security.
2. Check the option "Unknown sources".
3. Tap OK on the prompt message.
4. Select "Trust".

https://helpforum.sky.com/t5/Sky/Sky-HD-remote-code-for-a-Hitachi-43hb26t72u/td-p/2899528 should work

you should be able to change this in the tv settings in the smart part of the tv to allow downloads of apps from unknown sources.There will be a tick box somewhere in the settings of apps

First, knowing the make/ model of your phone would be helpful however try going into settings, then security and check the "unknown sources" box. This will allow installation of apps from sources other than "Play Store". Once you have done this and successfully downloaded your app, make sure to un-check the box.

I believe I may have answered this post already, anyway, go to settings, then security and un-check the "unknown sources" box. This will allow installation of apps from sources other than the play store. Once you have installed the app, make sure to go back in and un-check the box.

Go to the settings- security then check unknown sources
donwload this version and load it to your device and you should be ok
http://d-h.st/A6V

tried to replace the HDMI cable then set the right source.check also your box which not working.

This may depend on the signal source of the TV. If you are watching OTA TV (or your TV is interpreting the CC from the cable or satellite signal), then use the CC button on the remote. Alternatively, depending on your exact model Hitachi TV, try using the menu to find a Tools or Options sub-menu and then turn off the CC from there. This could be under a different menu item. If you add a comment with your model number, I'll be glad to give the exact menu steps.

If you have a set-top box (cable, satellite, digital-to-analog converter box, DVD recorder), the captions may be turned on at this source. Then you will need to disable the captions from that box. With a converter box, press the CC button on the converter's remote or enter the menus for that box.

With a Dish TV set-top box, press Menu on the Dish remote, go to Properties (item 9). Click Select and then go down to Closed Caption (item 6), and press Select again. The first item in this sub-menu lets you turn on and off the captions. Press the left button and then up or down arrow followed by Select to change the setting. For other sources, check the instructions for that device or add a comment with the specific source for a solution for that device.

I hope this helps.

Cindy Wells
(the Dish CC procedure is for the box I have to deal with; I can't guarantee that updates/model changes have not changed the procedure.)

"load: class JFI.class not found."
Based on the console output, it means that it cannot find the java applet class. In other words, the applet is missing on the server side. There is nothing that you can do about it, unless you know the person who created the applet. Good luck :)