HDMI Connection Does a hdmi cable provide better picture and sound than a regular cable connection?

• The connection you choose depends on the kind of connections available on your TV and on your DVD player. Some manufacturers provide only one kind of connection, others two kinds, and still others all three.
• Regular AV connections provide good video quality.

• S-Video provides better video quality.

• Component Video provides the best quality video next to HDMI.
• HDMI connections are the highest quality connections If need be adapters are available, to switch from S video cable to what you want. Check the attached links,instruction and guides, Good luck.
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How Do Connect My DVD Player To My TV
How to Hook Up DVD Player
Video Adapters

That HDMI connection hub might have shorted out and already dead.Tries tv unplug,replug it back in like about an hour later.For the tv to do a resetting itself back to the factory setting.Try using that HDMI connection hub again might work or not.Try other HDMI hubs for new connections for better chances for the tv to work with HDMI hubs connections again.

You may have to go into the TV setup menu and change a setting for Sound (or Audio) that tells the TV which input to use (HDMI or component) for sound. Usually the HDMI connection will work automatically but if you connect cables to Audio L/R that may override the HDMI sound input.

HDMI cable change its sub standard.

it does do dvi-d for computer, but does not handle high-definition video. it does not have the same resolution.

For connections of audio, so that you can hear all tv audio through the
surround system, connect either an optical audio cable or red & white
analog audio cables from the tv to the home theater. If you are using
optical audio, there is a plug on back of tv labeled for digital audio
output and an input on the surround sound system. If you plan on using
analog red and white, use the PROG OUT red and white output jacks on the
back of the tv to the AUX input on the home theater.

For video connections, to get HD you will need to be using either HDMI or
Component cables. HDMI is the cable that will provided 1080p signal (the
best HD signal), but if the source does not output 1080p, then your tv
will not display 1080p. Most cable boxes output at 1080i or 720p when on
HD stations. This signal still provides great picture quality, but HDMI is
not needed to get these HD signals. You can use component cables for your
cable box and the DVD player output to the tv for video. HDMI might give
you a slightly better picture quality but the signal will be the same.

To make the connection, you will want to connect from the cable box to the
tv (component or hdmi). Also from the home theater system to the tv using
hdmi or the video cables from component (red, blue, & green cables).

We hope this information is helpful to you.

Thank You,
Panasonic Consumer

With your PS3 on standby (red light) hold the on/off button down until it goes green and then back to red. This restores your PS3 to "factory settings", i.e. it is waiting for you to tell it how you want it to connect to your TV. Now disconnect any HDMI cables you may be trying to use and connect your PS3 to your TV via a scart connection. Now switch your PS3 on and turn to your AV channel and you should have both sound and pictures.

I had the same problem
you have to set up the componant on DTV.
the signal my be hd 1080i and the only connection with componant that can support this is the DTV port.
the other componant connections only support 480,
good luck

Why do you need to connect the rca cables when you get better sound through hdmi?