Microphone for my YAMAHA HTR-5440

There is a stereo MIC plug on the front of the receiver.

Labeled "Optimizer MIC" same size plug as a Ipod head phone jack.

mostly such behaviors are caused after the preamp of is faulty or the output section might have developed a problem after ...maybe the cable shorted or the amp fell and the board is broken. need a technician to confirm.

NOT CONNECTED PROPERLY OR NEED BATTERIES.

Where dose the microphone get plugged into?? ur tv?? or what because i dont know where too plug it into..

Hi, got this info from philips customer service. Was desperately trying to get the karaoke function to work for 2 weeks! Plug in your microphone. Press "KARAOKE" button until you see "MIC OFF" text, and immediately press RIGHT button. It will now shows "MIC ON"! "ECHO", "KEY" options will now shows up when pressing "KARAOKE" button repeatedly. However, microphone sound will not be available on digital output, you'll have to use the audio RCA. Happy singing!

I'm just taking a stab in the dark here but bare with me on this, I got a lot of info stored in this old head so it takes a while.

If you look at the jack for the microphone, Does it have 2 sleaves and a pin or just 1 sleave and a pin. If it has 2 then you will need an adaptor (Normaly Stereo jack to XLR). If it has 1 sleave then your going to need a preamp.

are you running your speakers at 8 ohms?

It really depends on where you will be using the microphone and and whether it is just going to be used for fun at home or in a club oor for recording?

Some golden rules for microphone selection.
1) Make sure the microphone is Uni-Directional. This means it will only pick up sound from the direction it points in. You are less likely to get feedback or background intereference.
2) For a vocalist, make sure the mic is a reasonable size. If it is too small and you need to hold it, after a while it becomes fiddly and uncomfortable.
3) When singing always use a foam hood or pop filter with the microphone. This will reduce explosive sounds on the letter "P" etc.
4) Choose a microphone with a wide frequency response but not too much bass which can make vocals sound boomy.
5) Finally, the microphone must have a reasonable dynamic range so that if you suddenly shout it does not distort excessively, but it will also work when you speak or sing softly.

I am wondering if it a preprogrammed remote controller or not. If not, you have to reprogram it.

Have you ever used the headphones as the sensor switch could be dirty?? Or if not mybe got a glitch in the micro from a surge or something like that. Try unplugging for a good few hours and restarting again???. Good luck Let us know as the more info we get the better we can assist you.