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You might try injecting a low level signal from a source such as the headphone jack of a CD or MP3 player into the volume countrol - disconnect the crystal pick up of course, and start out at very low volume settings and sneak it up until you hear something. This may clear your amp and let you know if the amp is capable of passing a good signal, and tell you if the problem is in the crystal or the amp. I agree that with type of amp and all, you arent going to get much sound... also, if that is a 1956 + or - model, those electronics are pushing 60 years old, and this is likely one of the 1st transistor phonographs made, plus it is battery operated. Keep this in mind. Also, might not hurt to clean the pins/sockets where your transistors plug into, and check for any cracked solder connections.
Tim
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RE: Philco TPA-1 - by TV MAN - 01-17-2014, 10:13 PM
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PT 6 chassis screws size???
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that sounds right or maybe 8/32 .
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