Technics SA-AX730 Receiver PLAYS FINE AT A VERY LOW VOLUME.

I assume the Panasonic is a TV. I have never heard of green audio outputs. Audio outputs should be red and white (for RCA plugs). There are adapters available that convert the yellow, red and white component outputs to HDMI. You can get them at GameStop (I bought one recently to connect a game system for my daughter). If you have a TV converter box from your cable or satellite provider you might be able to connect the audio out on the cable box to your Technics receiver and run a HDMI to the TV (be sure to turn off the TV's internal speakers through the TV's menu) for video.

wich is low imp in my technics sa-gx550 please tell me?

are u sure the fan is not working because on my ax730 the fan will only come on if im booting over half volume

An amplifier should never be turn on without speakers, it will overload internally.
make sure speakers work and try again.

Ahh technics. Technics always had overheating problems, trust me. Every since they started, their amps would get so hot they would hurt to touch. The reason the fan is not coming on seams to be something inside the circuit board. I'm sure that technics could fix this. If the fan works out of the receiver, then it must not be the fan. ;P

I would maybe get a computer fan, and just put it on top of the receiver and turn it on, or send it in for fixing. Also, do you have to crank the volume to get the speakers to play at your volume, and does the impeadence match the receiver. Because you may be pushing the receiver too hard.

try this mate:
http://www.electronicspoint.com/googlesearch.php?cx=002919058480771089906%3A03mranmmdze&cof=FORID%3A10&ie=UTF-8&q=Technics+SA-GX550&sa=Search#862

From the manual pg 27....... "The protection circuitry has functioned because the positive and negative speaker connection wires are "shorted," speaker systems with an impedance less than the indicated rated impedance of this unit are used or under severe use, such as loud volume, excessive power and in an excessively hot environment."

Have you tried connecting speakers? What was the result?

Yes, when you turn the volume up on these amps (or when the output gets past a certain level) the cooling fan should automatically come on.

You can't do it yourself only a good technician or repair center.I don't know the fix it cost.

Just get a universal remote like i did but i also had another technics remote from another unit.