I installed a Sony car radio on my boat but no music

If the hum is a low note continuous hum, its at 'mains' frequency. The power cables to the unit (or inside it) are getting too close to the cables that carry sound signals to the center speaker. The mains power naturally hums and if mains wires are near to audio kit wires they pick up this sound and play it through their system/speakers. Check the wires to and from it make sure the connections are good and firm. Seperate these wires by at least one inch from any power cables, use tape to hold them down and away from each other.

This really sounds like a wiring problem. I would start from scratch, seeing as how it will be difficult to find the issue you describe. Also, if you can, solder your connections to the radio. If you used crimp butts they may not have been tight enough and vibrated loose with use of the boat. Hope this helps

Fascinating. Recommend contacting a local car audio professional or Clarion customer support directly here:

https://clarion.com/xe/en/user-support/inquiry/contactus

Disconnect all the speaker leads and then hook one speaker (a new, known to work speaker) up directly to the radio using a short (6"-12") piece of speaker wire. Does that speaker work then?

(1) Is the hum out of both speakers?? (2) Is the sound distorted out of any of the speakers?? If the answer is yes to 1 and no to 2 then it sounds like one of the smoothing blocks or capacitors have gone down and requires replacement. If no to 1 then you probably have blown the output chip or taken one side of it out, check all connections to the speakers, try not to use tape joints which are unreliable. If you do have to piece the cable, solder the connections. Then replace the chip, Ian

If you are a rock music lover, chances are the speaker has burn out. try to turn on and place your ear near the speaker and listen for humming
sound. if no sound at all, then its the speaker

Hello,

It sounds like you may have a ground loop issue. I'd start by checking all the power and ground connections. Then disconnect the RCA wires from the amplifier. If the hum goes away then you should try grounding the stereo to a better grounding point, the factory grounds are usually not very good at all. Then try it again, if it is still there try replacing the RCA"s.

If the hum is still there after you've redone the connections and replaced the RCA's, you may need to install a ground loop isolator.
Both www.crutchfield.com and www.sonicelectronix.com sell good ones.

Hope this helps

Sounds like feedback. Check your speaker connections at the speaker and the main unit.

It is assumed that the hum is coming down the aerial wire it self....The hum should be eliminated
dissappear if you remove the wire from its connector at the rear of the receiver.

If this is the case then reconnect the aerial and try to find a radio station to listen to..

When you find a station you will find the hum dissappears as follows:

When there is no station detected the receiver tweaks up its sensitivity via the Automatic Gain Control, (AGC) and when this happens any thing that is detected on the aerial is reproduced at the speakers and in your case its just a hum.

I have heard this event lots of times and mostly its scrackles or scratchs or other weird sounds which come down the aerial while the AGC is flat out at maximum..

The radio station transmits a sound "carrier" and within this carrier there is the music content.

The receiver detects the "carrier" when you tune to the radio station, and then it sets its receive
level to the setting made by the volume control and then lovely music is presented at the speakers..

So in fact your receiver is working as it should be ,.,,, no worries mate....

Now if the hum is still there when the music is there then you have a fault, but as you havent mentiond this aspect your receiver is in my view quite "normal".

Cheers For Now
From YUBEUT..