If there is then any insulative covering on the resistor, go to its mechanical center and lightly, but surgically, scrape thru the insulation to hope for getting a continuity reading. . . . ( |
:I am currentlyrestoring a Crosley 601 There are two resistors that require replacement They are as marked on the schematic W4115 and W4117 they are placed on the Black lead.. one to the rheostat the other to Det tube filament What value should I use ???
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: : : :  : : : : : : : :Sir Ron dub-l-ya . . . . . : : :This may require some intermediate feed back on your part. : : :Are the resistors open or just don't look good . . . . . and CAN you currently ohm out a reading from them ? : : :The electrical utilization of the W115 resistor is as a series "range limiter" function for its associated W4100 rheostat/pot so its resistive value is typically in the order of 10% of the ohmmic value that you read when testing across the full value of W4100. : : :Now for the totally cryptic W117, since its functioning as a low value series voltage droping / current limiting resistor for the Detector, 1st Audio and Audio Output tubes filaments supply string. : : :Pull those tubes out of circuit and then hope that you can get a low ohms reading reading for that existing resistor and then use the value read out on the original . . . if not. : : :Take ohmmeter in hand and connect one lead initially to one end of W117 and the other lead goes to be finger-thumb gripping up against the alum-in-in-i-yum-yum band that is opposite the business edge of a single bladed razor blade. : : : ( or if you're Brit or Aussie . . . thats HEAVEEEE on the AL-) : : If there is then any insulative covering on the resistor, go to its mechanical center and lightly, but surgically, scrape thru the insulation to hope for getting a continuity reading. . . . ( :Eat :-hope- :Pray : ) : : :If so, you need a replacemant resistor of twice that resistance value, if getting no reading, swap the lead that WAS on the end of the resistor to the other end of the resistor and take / hope for a reading to the central test point again. : : :Thassitt . . . for now . . . what say you ? : : :73's de Edd : : : : :If practice makes perfect, and nobody's perfect, why practice ? : : : :  : : : |
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::I am currentlyrestoring a Crosley 601 There are two resistors that require replacement They are as marked on the schematic W4115 and W4117 they are placed on the Black lead.. one to the rheostat the other to Det tube filament What value should I use ???
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::Ed R s dont look good single wire ten turns around a flat board reading 1.5 ohm.. probably from thin air around the leads will try all your hints and let you know result... Thanks also for assist in voltage recently...You will hear me from here when it goes.. Rob W Ballarat Vic Australia..
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::Sir Ron dub-l-ya . . . . .
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::This may require some intermediate feed back on your part.
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::Are the resistors open or just don't look good . . . . . and CAN you currently ohm out a reading from them ?
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::The electrical utilization of the W115 resistor is as a series "range limiter" function for its associated W4100 rheostat/pot so its resistive value is typically in the order of 10% of the ohmmic value that you read when testing across the full value of W4100.
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::Now for the totally cryptic W117, since its functioning as a low value series voltage droping / current limiting resistor for the Detector, 1st Audio and Audio Output tubes filaments supply string.
::
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::Pull those tubes out of circuit and then hope that you can get a low ohms reading reading for that existing resistor and then use the value read out on the original . . . if not.
::
::
::Take ohmmeter in hand and connect one lead initially to one end of W117 and the other lead goes to be finger-thumb gripping up against the alum-in-in-i-yum-yum band that is opposite the business edge of a single bladed razor blade.
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:: ( or if you're Brit or Aussie . . . thats HEAVEEEE on the AL-)
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:: If there is then any insulative covering on the resistor, go to its mechanical center and lightly, but surgically, scrape thru the insulation to hope for getting a continuity reading. . . . (
::Eat
::-hope-
::Pray
:: )
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::
::If so, you need a replacemant resistor of twice that resistance value, if getting no reading, swap the lead that WAS on the end of the resistor to the other end of the resistor and take / hope for a reading to the central test point again.
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::Thassitt . . . for now . . . what say you ?
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::73's de Edd
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::If practice makes perfect, and nobody's perfect, why practice ?
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:::I am currentlyrestoring a Crosley 601 There are two resistors that require replacement They are as marked on the schematic W4115 and W4117 they are placed on the Black lead.. one to the rheostat the other to Det tube filament What value should I use ???
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