Would cut off by itself at normal volume,cut it back on and it was fine,did that for about two weeks,now if you hit the power button you here it click but dont come on .

Htr5640 turn power on but, shuts off in 1 or 2 seconds. no speakers connected or anything.whats my problem please help.

THE GOAL HEAR IS TO DETERMINE IF THE INSTALLATION (SPEAKER SETUP) IS CAUSING YOUR PROTECTION FAULT OR IS IT THE RECEIVER ITSELF HAVING INTERNAL DAMAGE. REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE RECEIVER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL GOES INTO PROTECTION, THEN THE RECEIVER WILL NEED TO BE SERVICED, AS YOU HAVE TOTALLY SIMULATED A BENCHED CONDITION THAT IS TOTALLY INDEPENDENT OF YOUR INSTALLATION. NOW FOR THE POSSIBLE CAUSES. MOST TIMES, THE RECEIVE WILL GO INTO PROTECTION WHEN IT SEES AN EXCESSIVE LOAD WHEN TURNING UP THE VOLUME, WHICH IS USUALLY CAUSED BY TOO MANY SPEAKERS OR DAMAGED SPEAKERS, BUT IF NO SPEAKERS CONNECTED, THEN IT IS USUALLY BECAUSE THE RECEIVER SEES AN EXCESSIVE LOAD DUE TO ITS OUTPUT SECTION BEING DAMAGED. IN ANY CASE, ONCE REPAIRED, YOU MUST CHECK YOUR SPEAKERS FOR BURNED VOICE-COILS, WHICH WILL AGAIN IMPOSE AN EXCESSIVE LOAD TO THE AMPLIFIER AND CAN CAUSE IT TO FAIL AGAIN. MORE THAN LIKELY, THIS IS WHAT WAS HAPPENING WHEN IT WAS GOING IN AND OUT OF PROTECTION, THEN THE SPEAKERS FINALLY IMPOSE ENOUGH LOAD TO ACTUALLY CAUSE DAMAGE TO THE AMPLIFIER SECTION AND THIS IS WHY IT WILL NO LONGER EVEN POWER UP THE OUTPUTS TO THE SPEAKERS. JUST MAKE SURE YOU CHECK THOSE VOICE-COILS BEFORE INSTALLING AGAIN. YOU CAN USE A DC OHM-METER TO DO THIS, WHILE NOT TOTALLY ACCURATE FOR CHECKING IMPEDANCE OF THE SPEAKERS, IT WILL ALLOW YOU TO CHECK ONE SPEAKER AGAINST THE OTHER AND THEY SHOULD BE PRETTY CLOSE. IF THE SPEAKERS ARE 8 OHM, THEN IT MIGHT READ 7.2 OR SO. BUT BOTH SHOULD BE NEAR THE SAME READING. IF YOU SEE ONE WITH A READING OF MORE THAN .5 OHMS LOWER, THEN YOU MAY HAVE A VOICE-COIL THAT IS FAULTY. ALSO, IF YOU RECONNECT THE SPEAKERS AFTER THE RECEIVER IS REPAIRED, PLAY THEM A T A LOW VOLUME, ONE AT A TIME AND LISTEN TO EACH DRIVER AND SEE IF YOU CAN NOTICE ANY DISTORTION, WHICH AT THESE LOW VOLUMES WILL ALSO INDICATE A BAD VOICE-COIL. BY THE WAY, ALSO CHECK FOR ANY SPEAKER CABLES THAT MAY HAVE BECOME PINCHED OR OTHERWISE SHORTED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V