strange radio problem

[merryman]

On my '01 with the standard radio/casset player, when I first start the truck with the radio on and the volume turned up, the radio comes on loud and then over about a 3-5 second time, the volume decreases to about 1/2 what it was initially and that is all the volume it will produce. Turn the truck off and restart it and the same thing happens--it will come on at the volume set, then decrease within a few seconds. The volume remains fine when the truck is not running and the ignition is in the acc. position.



Anyone have an idea what might cause such an event?



Vaughn

 

[Alan Reagan]

I'm not sure on these particular radios (I have the same as you) if these are the amplified speakers or not. Sounds like the output transistor driving the audio is weak.

 

[Big_Bad_Dually]

Speed/Volume

Do the newer pickups have a speed or cab noise volume control so when you slow down for a corner the radio volume goes down? Our Jeep does and the radio looks almost the same as the new Dodge radios.

Just a thought

Brian

 

[Alan Reagan]

I think my wife's new Jeep does that too. My 01 doesn't .

 

[merryman]

The only thing I can think to try that is with in my ability, is to run a hot wire directly from the batt. to the radio to see if that makes a diff. Can't imagine how there could be a power supply problem, but opening up the radio is beyound me.

Thanks



Vaughn

 

[JSchooley]

Sounds like (pardon the pun) the higher voltage when the engine is running is overheating a marginal part that is common to both amps. Could be the power supply is going into limiting.