My LG surround system is fine but the blu ray just stopped working. It keeps trying to open and close and then says error, when this doesn't happen.

Had the same problem with my LG Blu Ray player. I don't have the model number handy, but I did download the latest update. The movie nor the special features disc worked. Other Blu Rays I have worked fine. This happened with two copies of the Hunger Games Blu Ray. I returned the original to Target and exchanged for the exact same, still had same problems. I will look for the exact model number later tonight. If anyone has any thoughts, they would be welcome. I'd hate to think my LG Blu Ray player with surround sound that has worked so well for the past 3 years is suddenly out of date with new blu rays. Just seems a bit odd.

That shouldn't happen, what kind of cable are you using? you should try an hdmi cable. its electronic so it either works or doesn't and there shouldn't be any lag at all.

eject belt propably worn out, does not close lid proper - so ejects back. change of belt solves problem.

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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.)

I have the lhb953, I just fixed this problem for Tron. Go to Setup, go to Audio, for HD Audio Effect turn it to Off. This will solve the problem.

The exact same thing happens to me. It reads Blu-Rays, burns DVDs fine, but when I put in a blank Blu Ray disc to burn, it freezes. As soon as I open the tray, the computer continues as normal as though nothing happened. I can't find anything on what is going on.

if your old surround has either optical or coaxial connections you should be fine. if not you'll have to go with the audio in jacks (video 1,2 etc.) you'll get sound but not true 5.1 sound

Perhaps you may need to use a lazer cleaner in your blue ray player

The drive belt is probably failing. This is a common problem with the CLD-504, actually. It will need to be replaced.

the belt is broken for the carocel (the disc can not change) it is plobabely stuck b/tween discs therefore it keeps opening and closing saying error . eventually it turns off. can be fixed with a small elastic goody hair tie w/o metal clasp