Panasonic sa-pt870 home theatre system hooked up to panasonic viera flatscreen is giving me sound but no picture. Sky HD is hooked up to tv via hdmi. Optical cable running from sky to panasonic box. N

SOURCE: hdmi conflictng with optical

Use the component. If your tv is running correctly it should not lose quality through the component system. HDMI is simply a High Def Multiple Interface, meaning that it combines the Visual with the Audio signal in the same cable. Refer to your documentation on your sattelite box to see if there is a solution. But remember that the HDMI may be carrying what the actual broadcast sound is as not many if any channels are transmitted in 5.1 dts.

SOURCE: PANASONIC SA PT560

Need more details,you not too clear on your subject!
solutiondoct

SOURCE: I have an LG TV

Hello,
There are two things that I can suggest.
1-Test your optical cables to make sure they a good on a known working source because they are very fragile and break very easily.
2-Try to eliminate the use of optical output from tv to receiver. There may be a problem from the HDMI to optical conversion at the tv. Instead, try running the audio directly from the source to the receiver, and let the tv deal with video input only.
Hope this helps,
Good Luck.

SOURCE: samsung tv to panasonic sa bt100 home theatre

it is the problem with the hdmi cable .. dont buy cheaper cables it may damage after some time