Quote:
Originally Posted by Edward Huggins
- a complex enough one using a reflexed circuit and 3 gang tuning.
|
The three gang tuner only means an extra RF (radio frequency) amplifier stage, and most, if not all, the components in this stage can be left alone, the same with the IF (intermediate frequency) stage. Not sure where the reflex comes into it unless referring to the more complex audio negative feedback arrangement. It is not a TRF (tuned radio frequency) radio.
The black capacitors used in the Philips sets are very reliable, those decoupling the screen grids along with the output valve control grid coupling capacitor should be changed but the smaller ones can be left in place. The electrolytic C25 should be replaced and as mentioned the mains filter C28 disconnected.
The radio could be connected with the rectifier valve V4 removed to check the valve heaters in the other valves.