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If it's in protect mode that usually means a fault in the audio power output stage(s) Must likely a shorted output device,Some receivers have intergrated circuit outputs that may be the problem, you need pro.help these problems can be quite hard to troubleshoot if you don't find all the problems any new parts you install can turn to junk in the blink of an eye(or less).
If the signal goes through this chip I really hope it's no smd.
Change out this chip and check the capacitors around it; resistors too.
Have you tried a signal at the beginning of the actual pre-amp on your print? After this chip? Do you have a signal then? If so, it's obvious to be this chip. Succes.
check your speaker wires for short, try to turn it on without speakers connected, if all connections and speakers
seem ok the problem is internal witch can go from blown power supply to
shorted output devices and everything in between , and as always look
for repair shop in your area, do not attempt to do it yourself, fire hazard and electric shock are the things we all want to avoid ;)
I want to clairify you install, you sat you have I an HDMI cable running from the Time Warner Cable box to the AVR-589, going in to the TV/CBL input. From the Denon AVR-589, I have an HDMI cable running from the output to my Toshiba RV525U television.
Check the connection at the TV, if as you indicated above you have an HDMI cable from the HDMI out from the Denon to an HDMI output on the TV, if this is the case you need to have that HDMI cable plugged into an input on the TV not an output
Does the protection relay click 3 to 5 seconds after initial power on??? If not, your unit is staying in "protect" mode to save your speakers because the output transistors or output IC is shorted and sending 40 to 60 volts at your speakers. Not a good thing, but at least it saves your speakers.