#16
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Rather impressive for a GE. Also, a high tube count. Great find. |
#17
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Well turns out the power tranny is toast. I suspected something when I pulled out the chassis and there was melted wax on the bottom of the cabinet and the dial lights were dim after recap. Trans got real hot real quick, even with the rectifier tube out.
I checked over at arf and found a posting about these trans. They said to use a trans from AES part number p-t27bx. So I ordered one. Now I got a question. According to the riders schematic pin 4 and 6 on the 5y3 are suppose to have 305 volts ac on them. The schematic on the transformer I ordered has 600vct on the primary not counting the center tap. Do I hook it up the same even though the voltage is higher? |
#18
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That probably means 305 volts AC to GROUND....on EACH pin--and it would be about 600 v. ac between them. so--that tranny sounds just about right.
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#19
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The rect. tube looks to be missing on that GE..I PRAY...that big tranny is not gone on it !!
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#20
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So then the center tap goes to the c19 12mfd lytic like the original trans did?
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Audiokarma |
#21
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Came from an estate in Lancaster about 12 years ago along with a 1949 Emerson 544, 1960 Emerson 23" and 1970 Philco 9" B310W. The owner was a never-married nurse at nearby Community Hospital. Her entire TV ownership history and everything else was there. I did see an RCA CTC9 "Abbott" with legs included, that sold pretty quickly for $200. Same ex-tv repair guys from Philly that sold me a working Sencore VA-48 for $5 one year. I suspect he may have more treasures in September.
__________________
"When resistors increase in value, they're worthless" -Dave G Last edited by DavGoodlin; 05-11-2015 at 08:29 AM. |
#22
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#23
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I have to look at the schematic again. |
#24
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Ok then there is 2 taps left, 5 volts and 6.3 volts. I assume the 5 volts are for the dial lights, and the 6.3 is for the filaments, correct?
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#25
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5 volts is for the rectifier filaments. 6.3 is for other tube heaters and dial lights.
__________________
Reece Perfection is hard to reach with a screwdriver. |
Audiokarma |
#26
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The tube count shows a load of 3.45 amps, including the dial lights. You'd have to check the operating temp of the PT, after a few hours. If it seems to run warm, you might have to subsitute #47 dial lights to reduce to current a bit. Depends how much reserve is built in the transformer. Hammond transformers are a great product! |
#27
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What a sensitive radio! Especially on shortwave. Got all kinds of stations, more than any of my other radio's |
#28
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#29
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#30
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Well, my data-plate reads: "Assembled and Tested in Bloomsburg, Pennsylvania." But I've called Myerstown my home now for the last 8 years. Small world indeed!
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Audiokarma |
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