I have put in a temporary modern 22k linear pot and bypassed the switch, the volume control works very smoothly now, but I must get hold of a proper replacement switched pot.
Although MW is working exceptionally well there is hardly a peep out of LW, I can just, and I mean just hear R4 with the volume right up.
I cant think of what the problem can be other than a fault with the aerial or bandpass coils. All the information on the coil resistances is in the service manual but the coil connections are not identified. But I have found in some KB service notes a diagram for the coil base identifying the tags. So hopefully tomorrow armed with this and the details in the service manual for the KB 444 I may be able to identify the cause of no LW.
The KB service guidelines are here if anyone should want them. http://www.kbmuseum.org.uk/kb_service_ma...tes_kb.pdf
Mike
Although MW is working exceptionally well there is hardly a peep out of LW, I can just, and I mean just hear R4 with the volume right up.
I cant think of what the problem can be other than a fault with the aerial or bandpass coils. All the information on the coil resistances is in the service manual but the coil connections are not identified. But I have found in some KB service notes a diagram for the coil base identifying the tags. So hopefully tomorrow armed with this and the details in the service manual for the KB 444 I may be able to identify the cause of no LW.
The KB service guidelines are here if anyone should want them. http://www.kbmuseum.org.uk/kb_service_ma...tes_kb.pdf
Mike
