My tv model magnavox26mf231d/37 shows hdmi is disabled and the hdcp authorization failure.

HDCP 2.2 wasn't released until 2014. The LG 55G2 was released in 2012. There's no way to upgrade the TV, unless you replace it. Using a splitter probably wouldn't help. The device sending the HDCP check needs every part of the HDMI cable daisy-chain system to send back a "Yes I understand" message in 20ms.

Since a receiver isn't usually sending copy-protected video, this message is coming from one of the devices. Reset the resolution for that device to 1080p. Based on your description of the problem, you need to change the video output on the cable box. This depends on the cable box model and the guide it uses. However, either turn off the receiver with the cable box and TV left on. Alternatively, connect the cable box to the TV directly. For some, you then press Menu (for the cable box) twice to get to general settings. Then enter the audio/video section and look for the video output formats. See https://www.spectrum.net/support/tv/hdtv-picture-formats for some of the reset steps. In some cases, you may need to use a different video output to the TV to get a picture, instead of the error message, to access the menu at all.

On my set-top box, I sometimes connect the RF output to the RF on the TV when the set-top box sends a "out of range" signal. I set the TV to channel 3 (in my case) and then reset the video format. Other times, I just get the blank screen but the menu still works to reset the output format.

I hope this helps.

Cindy Wells

To resolve the issue "HDCP Unauthorized. Content Disabled" on your Roku, follow the steps below. If a purple screen appears on your TV showing "HDCP Unauthorized. Content Disabled", it's usually caused by a loose HDMI connector, or is caused by a problematic HDMI cable

If a purple screen appears on your TV showing "HDCP Unauthorized. Content Disabled", it's usually caused by a loose HDMI connector, or is caused by a problematic HDMI cable.

HDCP High-bandwidth Digital Content Protection, requires uninterrupted transmission through your HDMI or DVI lead. It is to ensure you don't try to intercept copyrighted material and copy it before it reaches your TV. Check your leads are correctly fitted and are good quality.

This TV has an HDMI input, so what do you mean by
"will not accept any external HDMI-HDCP source"? How to... http://service.us.panasonic.com/OPERMANPDF/TCP55VT30.PDF

Some TV's & cables are not HDCP compliant . Sometimes you can replace the cable to fix the problem & other times you have to replace the tv because its not HDCP compliant . First check to see if your tv is HDCP compliant .

have you had to fry pals the lamp in it. if so the do mite be lulus so try to put it on titer

HDCP is causing the trouble You experience. Try using other video input connection for same set. If it works fine that way, the problem is that the rights protection (HDCP) is acting as "police" to prevent copying or reproduce unauthorized content. If only the HDMI is connected (disconnect all other inputs/outputs) on some sets, could be work fine.

i just had it happen half hr ago and pulled power cable out of box for few seconds and plugged it back in...turned it on and it basically reset itself works great now

Can you tell me which Cable box you are using?Which model/region?

The possibility is that the HDCP handshake could not have happend correctly and hence the issue. Try to connect to different HDMI input of TV from Cable box. If possible change the resolution of cable box and check video