Re: Ekco U353 Restoration
Nice a bright it’s probably ok. As you tune in a station the length of the line will shorten. Its controlled from the AGC line, I.e, the DC output from the detector, a higher AGC -ve voltage will shorten the line.
On FM it takes the voltage across the 2uf capacitor in the discriminator circuit, the stronger the signal the higher that -ve voltage will be.
Check the resistors in the circuit of the valve then check if you have AGC voltage to alter the display.
__________________
Frank
|