Those RF amp transistors inside of the tuner's were a problem in several different model sets. Usually they opened up or shorted when someone walked across a carpet or something similar and had a static change built up on them, and then touched the rabbit ear antenna or the antenna terminals or leads. There not that hard to replace, just have to take out the tuner, remove the shield. and a good eye for soldering. Most of them have 4 leads, a ground, and of course the E, B, C.
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