VSX-1122 The rcvr flashes "HDCP ERROR" and doesn't display the TV signal. I unplugged it twice once for a couple minutes - still no picture.

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

Try lowering the resolution.

Here are some manuals that should help
Pioneer VSX 1122 Reference Manual Pioneer VSX 1122 Reference Manual Pioneer VSX 1122 Specifications

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

Did you take the default configuration when you set up the device? Did you change anything? Go back to the setup and see if you have modified any of the output sections. Also check for the TV being plugged into the wrong place...
HDCP is "High-Bandwidth Digital Content Protection" via HDMI connections, I believe. In short it's saying that it has some kind of error that is a copyright violation, as a guess. You might look it up on the Pioneer site for a better explaination.

Jack

What is a HDCP error? Here is a real life situation that happened that could happen to you. You just bought a Blu-ray Disc Player and connected it to your older HDTV with a HDMI cable. When you tried playing a Blu-ray disc a HDCP error was shown on the screen. The movie wouldn't play.
This is a known issue with HDCP, and it's one of the biggest hassles consumers will have to deal with when utilizing a HDMI cable on their HDTV. You will get a HDCP error if you try watching HDCP encoded content when using a HDMI cable.
The problem is that if HDCP exists anywhere in the video stream then all devices and cables accessing this content must be HDCP compliant. If one device or cable isn't HDCP compliant then you get a HDCP error.
The only solution is to either replace the HDMI cable with a non-digital cable or replace the HDCP-less device. This could mean buying a new HDTV. In fact, I worked with a reader last year troubleshooting a HDCP error on his TV. What happened is that he bought a Blu-ray Disc Player and connected everything properly only to get a HDCP error. After a few emails back and forth we discovered that his HDTV wasn't HDCP compatible, which is why he got the HDCP error.
The reader ended up buying a newer HDTV with HDCP, and his Blu-ray Disc Player worked perfectly with HDMI cables.

UNPLUG ALL CONNECTION FROM DECODER EXCEPT MAIN CABLE SIGNAL UNPLUG POWER WITH CABLE ONLY CONNECTED RECONNECT POWER WAIT FOR CLOCK TO DISPLAY HDCP SHOULD BE GONE RECONNECT ALL OTHER CABLES

In this case, you should use YPbPr (component) type of connection. It will allow you to watch TV in HighDef. without HDCP conflict.

Use component cables instead of hdmi cables. I know this isn't the best solution, but HDCP is not used over component and the video quality is just about as good.

HDCP is copyright protection for HDMI ensuring that you can't copy the protected material.
Did you connect some new DVD player or new TV to the receiver? However the error should clear once you disconnect everything from HDMI. If not, try to restore the receiver to factory defaults.