My 1950 Dodge Special Deluxe (D36) Canadian version has a Mopar Model 803 radio. Also labelled as a Philco PD-4908. I had it repaired recently. Now, it works great most of the time.
The only problem is that when the car idles it fades out. At driving speeds it works fine, when I slow down at a red light and the car idles it fades out. When I start to drive it cuts back in. Very similar in operation to the vacuum wipers.
I have a newer Optima battery, generator and regulator must work, battery is always charged.
Car is 6 volt, I replaced the wiring with a home made harness.
Amp gauge shows discharge during start up and goes to charge momentarily and then hovers around 0.
Is there a capacitor in the radio that I should check, I have a copy of the wiring schematic and nothing jumped out at me.
Sorry for the ramble, but I have checked for obvious defects.
Thanks
Neil