Zenith Royal 64 no power
 

Hello. I have a Zenith Royal 64 all-transistor radio that I bought in the summer of 2017 for $10. Recently, I have turned it on and haven't gotten anything out of it. Could you help me diagnose this problem? I tried new batteries and same result.

A few easy things. IF the radio is stone cold dead plug an ear phone in.
If you get sound its almost always the speaker.

Check the battery box for corrosion & broken wires.

ON/OFF switch. There are 2 wires on the rear of it. Put another wire
between them & see if it comes on.

Beyond that you will need a schematic, multy meter & luck !
When looking for the schematic use the CHASSIS number. Its on a tag
inside the radio.

73 Zeno:smoke:
LFOD !

If that Zenith is anything like the Royal 66, it uses a dual switching arrangement. It has four wires on the switch and uses a tapped power supply.

Zenith Royal 64 Pictures
 

Here are pictures of the Chassis and battery box. The chassis number is 8NT45Z8.

It's located in Sams TSM73. It looks like it runs on 2 "D" cells, 3 volts.
You'd have to see if anyone has a TSM73.