When sony blu-ray plays, lg 52lg70 tv power turns off and on. i connected sony to small vizio and it plays fine.the connection is hdmi.i hooked up a wii game and it plays fine. please help

This is a Comcast baby - U are paying them plenty for the service - they should help you with the remote. Don't let them off the hook.

If your Sony Blu-Ray player and LG TV are recent models, each should have an HDMI cable connection. HDMI is an method to connect your digital video and audio devices with just a single combined cable. In the case of your LG TV, using an HDMI cable will allow you to send the HD video signal to your TV's screen, and allow you to hear the sound through the TV's speakers.
Your LG TV may have multiple HDMI connectors, to allow other devices to send signals to your TV, such as a cable box or satellite box or digital video recorder (DVR). Your Sony Blu-Ray player will usually have just a single HDMI connector.
Purchase an HDMI cable from your local electronics store. There are different versions of the HDMI specification, and you should get a cable that you can verify is certified for the HDMI version 1.4 specification.
Plug one end of the HDMI cable into the Blu-Ray player, and the other end into one of the HDMI connectors on the TV, noting which one you selected.
When you turn on your Sony Blu-Ray and your LG TV, you should use the remote for the LG TV to select the input source. Your LG remote should allow you to select the HDMI input connector you used, at which point you should see the display of a DVD playing on the Blu-Ray player. If you cannot hear the sound, use the LG remote to increase the TV volume.

The video for blu ray disks come out of the HDMI port and that has to be connected to the TV for video. If it is connected, make sure the TV is switched to the correct HDMI port on the TV (assuming you have a flat screen HDTV).

Thanks for the update.

Call Vizio customer service 1 (855) 833-3221

They are very good and patient

AV sound has to have a cable from earphones to TV.

LG documentation states:

When you use SIMPLINK function, you have to

connect to the OPTICAL IN 1 jack to enjoy TV
sound to your speaker system.

Basically you need to have the Audio go from TV to receiver and setup receiver to that Input to output surround sound to all speakers.

If you have a cable box or satellite receiver, hook that output into the receivers input and that should work.

My setup is DirectTv HDMI output goes into the LG Home Theater HDMI Input 1, and LG goes HDMI output into the TV HDMI input 1.
so to watch DirectTV, I switch LG Home theater to HDMI Input 1. and TV is on HDMI input 1 (to view LG HDMI output from DriectTV, Blu-Ray, Vudu, etc.)

There are two possible issues. 1) The resolutions are mismatched. (output of the player and input of the TV) 2) the player can not confirm that the TV supports HDCP over the HDMI connection. Only 3 of the 4 HDMI ports are HDCP (high def copy protection) compatible.

Try a different HDMI port and make sure that you have the input set to the correct HDMI port. (There is an input button on the side of the TV as well as on the remote.)

The easiest things to check are turn off the Blu-Ray player and then turn it on again. Then press the Home button and navigate to the Setup Menu. Select Display and press the right arrow button, then select Resolution and press Enter. Then set the desired resolution and press Enter to confirm the selection. (Your TV should support 1080p from the Blu-ray player.) Then turn off the player since changing the resolution can lead to video issues.

I hope this helps.

Cindy Wells
(the manuals for the TV and the blu-ray player are available on line: http://www.vizio.com/vl470m.html and http://www.lg.com/us/tv-audio-video/video/LG-blu-ray-dvd-player-BD570.jsp Click on Support on either site.

You say this doesn't happen on regular cable or when playing a regular DVD. Hmm. Is this Blu-Ray player connected by simplink? HDMI is a bi-directional format cable, so  there are cases in setups where your tv can send commands to your blu-ray player and vice versa. It could be a problem with your blu-ray player that it is sending for some odd reason a mute command to your tv. Or is processing a command that your TV interprets to be a mute command when playing blu-rays. Because if it was the TV itself chances are you'd see this when watching a normal DVD or on cable as well. Since you say you're not, it leads me to believe the issue lies with the blu-ray player itself. 

Either the new BlueRay player is defective, the HDMI port on the player is defective, or the port on your set is defective.

Try connecting it with component RGB/AV cables, or S-Video/AV cables and see if everything works. If so, then you know that it is either the port on the BlueRay, or the port on the TV set.

To test the HDMI port on your TV, you will need another HDMI device to try.

Jerry G.