DX-390 distorted audio
 

www.devilfinder.com The importance of using heat sinks when working
on radios

Also,if you are using earbuds or earphones,never let the earbuds or
earphones get too close together with each other or touch each other if
the radio is turned on and the earbuds or earphones are plugged into the
radio jacks.That can blow a resistor or two and mess up radio
sound/audio.
cuhulin