First you have to see if you have any plate voltage on any of the tubes. This is done by using a voltmeter set to a high scale ( ex 300 v) and probing from the plates to ground.
If the voltage is there then you have to see if the antenna rheostat is open ( see schematic). A common fault with this equipment is an open theostat.
There is more but those are two fundamental ones.
Lou
:radiola 17 has all tubes lite. Ground and antenna wires are connected and speaker. No sound or hum. What needs to be checked next. Thanks, Jim
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