My receiver keeps going to "protect" and eventually shots off. What is the problem? Can it be fixed?My receiver keeps going to "protect" and eventually shots off. What is the problem? Can it be fixed?
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There is a defect that is causing the light to come on. It could be a bad output transistor or some other defect that produces excessive heat. The cooling fan could be at fault too.
you can check them with a ohm meter, hook it to the wires that you hook to the reciever and if you get a reading it is good if no reading it is bad wires
Check the speaker wire connections and make sure that none of them are crossed. Shorted wires will cause the reciever to turn on the protect mode to keep the amplifier from shorting out. Try disconnecting the speaker wires from the reciever. if you turn it on and it still says "protect" then the short is possibly in the reciever itself.
unplug,leet capacitors discharge, check back of unit where speaker wire clips are to make sure there are no wire strands touching each other,check same thing @ speakers, try turning unit back on.
Protect on any reciever usually means that it has reached its maximum capacity of volume (known as clipping) and at the reciever is now automatically reducing the volume to avoid damage. This some times is triggered if the reciever was used hard and is now damaged so you would need to bring it to a repair shop. Sometimes its caused by a bad wire to the speakers, a short to say. Check all your wiring, make sure its not overheating and getting plenty of air. Some where its recieving a signal telling it to go into protect mode.
I read something the other day in the user manual about re-setting the microprocessors if the display doesn't display properly.
Turn the amp off.
Hold down the input mode & analog buttons while turning power on. The whole display should flash on & off at 1 sec intervals, then release the two buttons.
This resets the microprocessors & supposedly fixes display problems.
Turn the reciever on for a second or two and then off before the protect mode shows up on the monitor. Repeat this step about five times and check to see if the reciever does not go into protect mode. If it does go into protect mode try it again. Dont know if this is the proper way to fix the reciever but it worked for me. Good Luck
You may have loosened a solder joint on one of the components inside with your air blast. A repair tech would monitor the outputs DC offset voltage and he will probably see one that is not zero volts and while wiggling various things he should see a sudden change in the DC offset voltage on the bad channel when he touches the bad connection. Then it's just a matter of resoldering the connection. Good luck on this one.
My receiver keeps going to "protect" and eventually shots off. What is the problem? Can it be fixed?
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