Question about Alpine MRP-M450 Car Audio Amplifier

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Odd Problem My amp turns off only when i change the source from tunner it only works in tunner. can someone help me asap?

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Your amp's remote turn-on wire is connected to the wrong wire at your head unit. Look for a blue/white wire and connect it there.

Posted on Mar 07, 2007


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There is no screen is on

Hi my name is Roety,
I can help you with your issue ,
 If the TV menu works then you have a bad source or the Tv wrong source is selected
Reboot all devices and check the connections and make sure the TV is on the correct input source
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap

I’m happy to help further over the phone at

Jan 29, 2010 | Sharp Aquos LC-20B4U-S 20 in. LCD EDTV

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My CDA-9847 will no reconize the SIR-ALP1 tunner.

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I have a kenwood stereo integrated amplifier KA 791 and the dual cassete KXw892, niether will come on. when plugged in the standby light only comes on. the reciever and cd player components come on fine?...

That system came with the kt591 tunner in a bundle which consisted of what you call the Kenwood Spectrum 700 rack system, you had to plug the tuner into the wall and then plug the amp into the tunner if you didnt , when you turn the amp on you just get a relay clicking noise and nothing turned on.

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Sony projection television model kp-53hs30. when turned on the screen is ok for about 30 seconds, then pops and slowly turns fuzzy or broken up, for about 30 seconds, clears and then the cycle starts...

That set has 2 tuners in it a main and a PIP tunner, you Main turner is bad. This would need to be chagned by someone who can solder well. If you are interested in changing it youself and can or know someone who can solder well let me know and I will get you a part number and help you through the repair.

Thank You

Sep 11, 2008 | Televison & Video

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Avr 1804 denon 7.1 reciver

Did you check the Audio-Video slider button in the middle of the remote? It needs to be on Audio, else the remote sends video channel number signals when you press the numbers.

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No Amp Power

you are taked the wrong cable to turn on your amp......alpines have a two blue cables one of theme start the power amplifier and the other one start the electric antenna when you turn the radio,if youre earing the cd or tape and change to the radio this cable have 12 volts to startup the antenna.....solution .....just try change the other blue cable. see you.

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