04-10-2022, 02:53 PM
It looks to me as though that upper-left Atom electrolytic is attached to pin 6, which may be a filament pin, of the tube there. That would suggest to me that that tube is actually the rectifier.
Further, it looks to me as though the bottom two electrolytics, an Atom and that dark blue one. are connected in series, which could indicate that either there was a higher voltage at that point than one cap could handle by itself, OR that the original cap there was only 8 MFD and the repairer wanted to replace that original cap with one of the same value, but he only had 16 MFD caps to do the job with.
Also, that wire wound resistor which is connected to the + end of the blue cap has gotten awfully hot at some time in the past. In fact. it looks suspiciously like it has been burnt open. I'd be checking that out closely.
Can you make out what the writing is on that blue cap? Maybe that would give us a clue.
Ken W7EKB
Further, it looks to me as though the bottom two electrolytics, an Atom and that dark blue one. are connected in series, which could indicate that either there was a higher voltage at that point than one cap could handle by itself, OR that the original cap there was only 8 MFD and the repairer wanted to replace that original cap with one of the same value, but he only had 16 MFD caps to do the job with.
Also, that wire wound resistor which is connected to the + end of the blue cap has gotten awfully hot at some time in the past. In fact. it looks suspiciously like it has been burnt open. I'd be checking that out closely.
Can you make out what the writing is on that blue cap? Maybe that would give us a clue.
Ken W7EKB
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