10 years and first problem to repair. When you turn on and select DVD or any other selection a very loud cracking noise comes through right speaker only. So loud (with volume tuned off too) that I fear...
I think your receiver is damaged.
Mark the speaker wires on the back of the receiver. label the speaker connected to the left channel "Left" and the speaker connected the the right channel "Right"
Also pay attention to the polarity (positive an negative) making some type of marking on your speaker wire so you can reconnect them correctly.
Disconnect both left and right speakers.
Connect the speaker wire that is labeled "Right" to the receiver's left speaker connections only then turn your receiver on.
IF the loud noise comes back, this speaker is damaged. I am guessing that the speaker is fine.
Now connect the speaker that was labeled "Left" to the receiver's right speaker connections and turn the receiver on.
IF the loud noise comes back like it did before but now playing through the "good" speaker there is a problem with your receiver.
If so, your receiver is 10 years old. Isn't it time for an upgrade? Try ebay for good used equipment deals.