Can I connect my blu-ray home theatre to my TV using Component Cable HDMI Male to 5 RCA RGB Audio Video AV?

OK I've had some trouble with this new TV I have. My Blu-Ray home theatre system will not work using a normal HDMI lead so I decided to try a component cable instead. It has all the coloured cables at one end & a HDMI connection at the other. I put the coloured cables into the back of my TV & the HDMI connection into the blu-ray player & set my TV to Component. I'm still getting the same infuriating "No signal" message that I got when I tried it with the normal HDMI lead a few days ago. This is driving me crazy now, can anyone help? Did I hook it up wrong? Did I buy the wrong type of cable? I'm struggling to find one on the net that has the coloured component things at both ends. Please help me out if you can, let me know what I'm doing wrong because I am running out of ways to hook this thing up. It works perfect with the PS3 through the HDMI lead so I don't understand what the problem is with the blu-ray player. Thanks for reading.