23-04-2012, 12:14 PM
Hi Joe, you need to replace with the original types (or near subs.) if you can, mixing silicon with germanium can upset the DC conditions, it is interesting that you say it can be made to work (sought of) when using your PSU but not on batteries, are the batteries ok? Even though your PSU is only putting out 15 volts the radio should still work reasonably well if there are no faulty components in the set. The motor boating you describe sounds bad, does it motor boat with the volume control turned down to minimum? It might be a B+ A/C impedance problem either within the receiver or the PSU or excessive feedback somewhere in the receiver caused by a particular component/break/short etc. I realise it's easier said than done but you need to diagnose from a known good base line, it's all to easy to go round in circles if you don't, good luck
Lawrence.
Lawrence.
