Thread: Motorola TS-4J
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Old 07-16-2018, 01:29 PM
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timmy timmy is offline
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There are 2 smaller caps in the circuit not the power supply so if they are going bad then it almost sounds like ac is getting into the DC circuit. I would stop and go over the schematic with a fine tooth comb and start at the diodes as bandersen noted that the b- does not go to the chassis at all. If the diodes were backwards you may get nothing but if one is backwards then you would have a problem, sort of maybe having DC on one side and ac on the other which should not be. The filiment string should not be dependant on an electrolytic cap the ac would distroy the cap . If it were then as soon as the cap takes a dump so does the filiment string, goes out.
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