Back in the days before solid-state electronics, radios and TVs ran on vacuum tubes which generated a lot of heat and frequently burned out. As a consequence, repair shops like this were fairly common in the 1970s. However, the development of microchips and cheap, “disposable” home electronics would soon bring their era to a close. By the 1980s, shops like this were disappearing quickly. I do not know how long Ancel held on; I moved to Texas in 1980. If someone knows, please contact me so that I can update this caption. It would also be interesting to find out when this shop started in business. Note that Radio came before TV in this sign. Usually, it was the other way around. In the 1970s, TV would have generated far high revenue than radio.