I have a VEF Spidola which is completely deaf on all wavebands.
The amplifier runs and if you poke strategic points then you get audio in the form of mains hum, also if you poke around the first IF you get what sounds almost like radio but you can't hear any stations and the tuner does nothing, it's the same when each band 'turret' is connected on the tuner.
Refering to the schematic on the following page....http://www.rahutchinson.eclipse.co.uk/VEF_Spidola.htm
When I scope around the collector of T1 (bottom left on the diagram) I can get a 800~odd KHz sine wave about 300mV P/P however the oscillations are killed completely if you try to measure them on the Base or Emitter. 800+ KHz seems incredibly high for a germanium local oscillator?
T3 (Presumably mixer, top left) has zero detectable modulation on it, all voltages around the transistors where shown seem to read quite close to those on the diagram, within about 10%. All resistors seem to read the correct values, can't vouch for the capacitors but have read some of the electrolytics and they seem to be ok (have experienced leaky russian electrolytics in other equipment.
Have swapped T1 and T3 as they are the same device and all transistors are socketed so also very easy to do, made zero detectable change. Is the voltage on C61/C62 likely to be AGC? Appears to connect the output of the final IF stage back to the input of the first.
Would it be worth injecting my own LO so see if that improves matters?
Any common faults on these that members are aware of?
Have been on with this for a few nights now, starting to get frustrated with it!