16-11-2019, 10:02 PM
(This post was last modified: 16-11-2019, 10:04 PM by Old Sparky.)
Terry, that thought did occur to me, particularly as I don't know the history of this radio, other than at some point it had water intrusion, mainly in the rear LH corner where the power & speaker leads enter/exit the radio, but I can certainly try adjusting the oscillator tuning coil (it is an entirely conventional early 70s car radio with 3-stage permeability tuning, b.t.w., which was sent tom my a member of UKVRRR for repair.
As to the oscillator trimmer & padder caps., I haven't yet checked them for capacitance. They are probably within tolerance, but I was speculating as to the (few) possible causes of the upper freq. being about 300kHz LF of where it should be, after having replaced a faulty polarity c/o switch, faulty Electrolytics, and a 560 ohm resistor which read over 700 ohms, expecting the set to then work normally, only to be confronted with the tuning fault.
As to the oscillator trimmer & padder caps., I haven't yet checked them for capacitance. They are probably within tolerance, but I was speculating as to the (few) possible causes of the upper freq. being about 300kHz LF of where it should be, after having replaced a faulty polarity c/o switch, faulty Electrolytics, and a 560 ohm resistor which read over 700 ohms, expecting the set to then work normally, only to be confronted with the tuning fault.
