5-valve compact radiogram, Monarch record changer.
Intermediate Frequency: 455
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
Service information HMV-5503-DorsetChester-5V-BC-AC-radiogram-1955.pdf
Watch the riveted earth points on the various tag strips - these may need to be wired to their nearest earth solder tags to avoid random frequency changes. The likely culprit is the tag strip under the mixer/osc with the 22k and 47ohm resistors attached.
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