This radio would be best for someone who was knowledgeable in radio repair. I think it needs a new volume control module/component

The back of this radio says three AAs it has a 9 V battery hook up. That was obviously put on later. You can see where the wires have been attached.

This Toshiba Superheterodyne 7 Transistor 2 Band Transistor Radio Model 7TM-312S is a fantastic addition to any vintage radio collection. Made in Japan, it boasts high-quality craftsmanship.