10-09-2023, 01:18 PM
This set construction is terrible.
I thought I had replaced all the electrolytic capacitors, every one I have found is duff. Some have huge leakage, others are open circuit. Some think that they are resistors.
Thumbing through the service sheet I realised that I has not found C18, the de-coupler between the oscillator and the mixer transistors.
When I found it I wished I had not. Buried in the metalwork at the end the wave change switch, hidden behind the external aerial socket which thankfully is held by only one hard to get at screw.
One end is completely inaccessible on a multiple earth tag, the other is through a rivet and wrapped, twice, round the tag on the paxolin of the switch.
Managed to unsolder one end, fatigued the ground connection to remove it and test. Totally useless as a capacitor. I have never before had a transistor radio where every electrolytic capacitor is duff.
The replacement went in connected to the tag and another more convenient ground.
Stressed and out of time, seeing if it works any better will be for next week.
I thought I had replaced all the electrolytic capacitors, every one I have found is duff. Some have huge leakage, others are open circuit. Some think that they are resistors.
Thumbing through the service sheet I realised that I has not found C18, the de-coupler between the oscillator and the mixer transistors.
When I found it I wished I had not. Buried in the metalwork at the end the wave change switch, hidden behind the external aerial socket which thankfully is held by only one hard to get at screw.
One end is completely inaccessible on a multiple earth tag, the other is through a rivet and wrapped, twice, round the tag on the paxolin of the switch.
Managed to unsolder one end, fatigued the ground connection to remove it and test. Totally useless as a capacitor. I have never before had a transistor radio where every electrolytic capacitor is duff.
The replacement went in connected to the tag and another more convenient ground.
Stressed and out of time, seeing if it works any better will be for next week.
Boater Sam.
