Lg service can not receive HD channels

You need to have HD subscriptions or buy HD receiver and tune it to free HD services in your area.

A software [firmware] update is necessary. Contact the the authorized service centre for LG. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience.
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You will have to put a modulator/scan converter in line to convert from digital to analog.

check screen resolution of your lcd tv & receiver too

I wonder if this model is meant to receive HD channels in the first place. If it isn't, that is probably why you get that on-screen message. If it has a built in SD digital tuner, then it is not a HD digital tuner/DVD recorder; it would only be SD, hence the message.

It is possibly a limitation of the model, not a fault.

its simple ,HD stands for "high definition" and either your TV or DVD player cant do HD ,these channels will be only screened in HD ,this is why you cant watch them ,you will need to update one or both of them .THANKS for using FixYa

Your TV is not at fault, it is showing you the difference between HD and non HD channels. HD TV's work great with HD scorces but don't usually look that great with standard definition, Also the non-HD channels are more likely to be heavily compressed which makes them look bad too.

on your directv box, go to menu, setup, setup again, then audio, then dolby digital on the right and turn it on. assuming you have an optical audio cable from your sat box to your onkyo.

Depending on your cable provider, some of the HD channels may be present. If so, these are ususally located in the upper channel numbers. It sounds like you are receiving some of the HD lineup. A cable box will probably allow you to view more HD channels including the premium HD channels if you subscribe to them. You should not be noticing a delay with the HD channels only. If this is what you are experiencing without a cable box, then it would be an issue with the HD tuner built into your TV set. LG customer service can let you know if there are any software updates available for yourmodel that can resolve this. Additionally, if you are getting your sound from an Home Theater system then you will notice an echo if using the TV's built in speakers at the same time. This is sometimes mistaken as an audio delay. If you are using a home theater system, be sure to disable the speakers that are built into your system.

make sure the dish network menu settings in setup under audio are on high. Some tv's require it to be off. Try both and see what works. Also the delay is caused by digital conversion. new stereos have settings for this delay and they have delay boxes for sale online. You could try to change your delay settings on your stereo surround to help. I had to do this.