If built as a hard wired plug in unit, could this be the unit ?

Hot linked:

http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf

Or another alternative ?.....not showing the interconnects...

Hot linked:

http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf




73's de Edd

:Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
:

With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.

73's de Edd

:::
:::Hi Ed
:the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
:::
:::
:::
:::If built as a hard wired plug in unit, could this be the unit ?
:::
:::Hot linked:
:::
::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
:::
:::
:::
:::
:::
:::Or another alternative ?.....not showing the interconnects...
:::
:::Hot linked:
:::
::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
:::
:::
:::
:::
:::73's de Edd
:::
:::
:::
:::
:::
:::
:::
::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
::::

That is just the old numeration of the #80 tube and hopefully you did not just plug the set in without bringing it up slowly for evaluation by using a Variac.
Otherwise, just unplug the 80 tube in there now and try operating the primary only of the transformer along with the filaments . then keep a constant eye on it like a mother hen to see if there is any undue warming…or ‘moke….’moke I smell ‘MOKE.
Of coarse, realize that there will be some bit of remnant odor from the first mishap. BUT no stream of smoke coming out unless the transformer was actually damaged…irreparably.


73's de Edd

::that looks like it do you know what the the tube number is in the power unit.there is a ux280 in there now and I don't know if it is the right one,someone else messed with the power unit before I got it.when I powered it up smoke started coming out around the tube in the power unit
::
::
::
::
::
::
::
::With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.
::
::
::
::
::
::
::
::73's de Edd
::
::
::
::
::
::
::
:::::
:::::Hi Ed
:::the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
:::::
:::::
:::::
:::::If built as a hard wired plug in unit, could this be the unit ?
:::::
:::::Hot linked:
:::::
::::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
:::::
:::::
:::::
:::::
:::::
:::::Or another alternative ?.....not showing the interconnects...
:::::
:::::Hot linked:
:::::
::::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
:::::
:::::
:::::
:::::
:::::73's de Edd
:::::
:::::
:::::
:::::
:::::
:::::
:::::
::::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
::::::

From what you describe, it certainly looks like you might have LUCKED out and are merely having breakdown of the insulative characteristics of that #80 tube socket, with it having a conductive carbon trail burnt within that sockets material between the two smallest pins, which have the extreme potential of the AC HV secondary across them

Replacement of that socket would take care of that problem, I probably am assuming the original to be of the cheap two part sheet bakelite construction, its replacement with a heftier voltage resistant ceramic / steatite type should give a half life of ~500 yrs…..(considering no “meece” passes water upon it, with its deposition of conductive salts and electrolyltes)


Far better, for the problem being a mere tube socket, rather than the rare power t-former !.


As per the one tube ….227 ….27… not lighting up. The filaments will be the LARGE set of 2 pins, so, since I am unsure of your the ohms metering medium to be utilized, unplug a brother tube [ one of the (2) # 56 tubes used as local oscillators in your set], that WAS lighting up, and enact a relative ohmic comparison.

Resistance testing across the 2 large pins of a #56 should come up with a definitive resistive value…pretty much with an unwavering of its value…. if using a High Z based instrument.

If using an older VOM, there may be enough of current drive in the low ohms function to show a shift in the slight warming up, and slight shifting of the filaments cold / vs / warmer resistance

At any rate… you get the idea of what to now expect on testing that good tube….so…shift over to the questionable tube and probably be expecting NO low ohmic value, like you were reading on the tube with the known good filament.

One new / used toobie .......
then being required.



Standing by…if the turkey doesn’t intefere.....gobba..gobba..GOBBA!


73's de Edd

::Hi Edd
::I pluged it in without the ux-280 and the other tubes allmost all lit up except a uy227 I did not see or smell any smoke.do you think the 280 tube could be shorted,the bakelite base on the tube is burnt between the two small pins.is there a way to check tube with a ohm meter.I am new to this and I really thank you for your help.
:Thanks
:Jim
::
::
::
::That is just the old numeration of the #80 tube and hopefully you did not just plug the set in without bringing it up slowly for evaluation by using a Variac.
::Otherwise, just unplug the 80 tube in there now and try operating the primary only of the transformer along with the filaments . then keep a constant eye on it like a mother hen to see if there is any undue warming…or ‘moke….’moke I smell ‘MOKE.
::Of coarse, realize that there will be some bit of remnant odor from the first mishap. BUT no stream of smoke coming out unless the transformer was actually damaged…irreparably.
::
::
::73's de Edd
::
::
::
::
::
::
::
::
::
::
::
::
::
::::that looks like it do you know what the the tube number is in the power unit.there is a ux280 in there now and I don't know if it is the right one,someone else messed with the power unit before I got it.when I powered it up smoke started coming out around the tube in the power unit
::::
::::
::::
::::
::::
::::
::::
::::With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.
::::
::::
::::
::::
::::
::::
::::
::::73's de Edd
::::
::::
::::
::::
::::
::::
::::
:::::::
:::::::Hi Ed
:::::the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
:::::::
:::::::
:::::::
:::::::If built as a hard wired plug in unit, could this be the unit ?
:::::::
:::::::Hot linked:
:::::::
::::::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::Or another alternative ?.....not showing the interconnects...
:::::::
:::::::Hot linked:
:::::::
::::::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
:::::::
:::::::
:::::::
:::::::
:::::::73's de Edd
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
::::::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
::::::::

:
:
:
:
:
:From what you describe, it certainly looks like you might have LUCKED out and are merely having breakdown of the insulative characteristics of that #80 tube socket, with it having a conductive carbon trail burnt within that sockets material between the two smallest pins, which have the extreme potential of the AC HV secondary across them
:
: Replacement of that socket would take care of that problem, I probably am assuming the original to be of the cheap two part sheet bakelite construction, its replacement with a heftier voltage resistant ceramic / steatite type should give a half life of ~500 yrs…..(considering no “meece” passes water upon it, with its deposition of conductive salts and electrolyltes)
:
:
:Far better, for the problem being a mere tube socket, rather than the rare power t-former !.
:
:
:As per the one tube ….227 ….27… not lighting up. The filaments will be the LARGE set of 2 pins, so, since I am unsure of your the ohms metering medium to be utilized, unplug a brother tube [ one of the (2) # 56 tubes used as local oscillators in your set], that WAS lighting up, and enact a relative ohmic comparison.
:
:Resistance testing across the 2 large pins of a #56 should come up with a definitive resistive value…pretty much with an unwavering of its value…. if using a High Z based instrument.
:
:If using an older VOM, there may be enough of current drive in the low ohms function to show a shift in the slight warming up, and slight shifting of the filaments cold / vs / warmer resistance
:
:At any rate… you get the idea of what to now expect on testing that good tube….so…shift over to the questionable tube and probably be expecting NO low ohmic value, like you were reading on the tube with the known good filament.
:
:One new / used toobie .......
:then being required.
:
:
:
:Standing by…if the turkey doesn’t intefere.....gobba..gobba..GOBBA!
:
:
:73's de Edd
:
:
:
:
:
:
:
:::Hi Edd
:::I pluged it in without the ux-280 and the other tubes allmost all lit up except a uy227 I did not see or smell any smoke.do you think the 280 tube could be shorted,the bakelite base on the tube is burnt between the two small pins.is there a way to check tube with a ohm meter.I am new to this and I really thank you for your help.
::Thanks
::Jim
:::
:::
:::
:::That is just the old numeration of the #80 tube and hopefully you did not just plug the set in without bringing it up slowly for evaluation by using a Variac.
:::Otherwise, just unplug the 80 tube in there now and try operating the primary only of the transformer along with the filaments . then keep a constant eye on it like a mother hen to see if there is any undue warming…or ‘moke….’moke I smell ‘MOKE.
:::Of coarse, realize that there will be some bit of remnant odor from the first mishap. BUT no stream of smoke coming out unless the transformer was actually damaged…irreparably.
:::
:::
:::73's de Edd
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::::that looks like it do you know what the the tube number is in the power unit.there is a ux280 in there now and I don't know if it is the right one,someone else messed with the power unit before I got it.when I powered it up smoke started coming out around the tube in the power unit
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::73's de Edd
:::::
:::::
:::::
:::::
:::::
:::::
:::::
::::::::
::::::::Hi Ed
::::::the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
::::::::
::::::::
::::::::
::::::::If built as a hard wired plug in unit, could this be the unit ?
::::::::
::::::::Hot linked:
::::::::
:::::::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::Or another alternative ?.....not showing the interconnects...
::::::::
::::::::Hot linked:
::::::::
:::::::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
::::::::
::::::::
::::::::
::::::::
::::::::73's de Edd
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::
:::::::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
:::::::::

OK…then …here are the yellow markups of the sole 3 electrolytic filter capacitors , along with their install polarities, for that unit of yours. ~ 10 ufd @ 450 rating should do it.
The rest of the units olden PAPER capacitors would be best served by their being replaced with newer, more trouble free, poly / mylar types.

Schema Referencing :

73's de Edd






:Just an update and a few questions, for one thing the 27 did lightup just could not see it with the lights on.I am trying to figure out the shematic on the thing and cant tell witch are electrolylic and witch are not and witch end would be + and - as I said I am new to this, I ordered some new caps just waiting for them.and from what you said I guess I better order a new tube socket. can you use the elctrolylic the the place of the waxed ones
:Thanks
:Jim
:
:
::
::
::
::
::
::From what you describe, it certainly looks like you might have LUCKED out and are merely having breakdown of the insulative characteristics of that #80 tube socket, with it having a conductive carbon trail burnt within that sockets material between the two smallest pins, which have the extreme potential of the AC HV secondary across them
::
:: Replacement of that socket would take care of that problem, I probably am assuming the original to be of the cheap two part sheet bakelite construction, its replacement with a heftier voltage resistant ceramic / steatite type should give a half life of ~500 yrs…..(considering no “meece” passes water upon it, with its deposition of conductive salts and electrolyltes)
::
::
::Far better, for the problem being a mere tube socket, rather than the rare power t-former !.
::
::
::As per the one tube ….227 ….27… not lighting up. The filaments will be the LARGE set of 2 pins, so, since I am unsure of your the ohms metering medium to be utilized, unplug a brother tube [ one of the (2) # 56 tubes used as local oscillators in your set], that WAS lighting up, and enact a relative ohmic comparison.
::
::Resistance testing across the 2 large pins of a #56 should come up with a definitive resistive value…pretty much with an unwavering of its value…. if using a High Z based instrument.
::
::If using an older VOM, there may be enough of current drive in the low ohms function to show a shift in the slight warming up, and slight shifting of the filaments cold / vs / warmer resistance
::
::At any rate… you get the idea of what to now expect on testing that good tube….so…shift over to the questionable tube and probably be expecting NO low ohmic value, like you were reading on the tube with the known good filament.
::
::One new / used toobie .......
::then being required.
::
::
::
::Standing by…if the turkey doesn’t intefere.....gobba..gobba..GOBBA!
::
::
::73's de Edd
::
::
::
::
::
::
::
::::Hi Edd
::::I pluged it in without the ux-280 and the other tubes allmost all lit up except a uy227 I did not see or smell any smoke.do you think the 280 tube could be shorted,the bakelite base on the tube is burnt between the two small pins.is there a way to check tube with a ohm meter.I am new to this and I really thank you for your help.
:::Thanks
:::Jim
::::
::::
::::
::::That is just the old numeration of the #80 tube and hopefully you did not just plug the set in without bringing it up slowly for evaluation by using a Variac.
::::Otherwise, just unplug the 80 tube in there now and try operating the primary only of the transformer along with the filaments . then keep a constant eye on it like a mother hen to see if there is any undue warming…or ‘moke….’moke I smell ‘MOKE.
::::Of coarse, realize that there will be some bit of remnant odor from the first mishap. BUT no stream of smoke coming out unless the transformer was actually damaged…irreparably.
::::
::::
::::73's de Edd
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::::that looks like it do you know what the the tube number is in the power unit.there is a ux280 in there now and I don't know if it is the right one,someone else messed with the power unit before I got it.when I powered it up smoke started coming out around the tube in the power unit
::::::
::::::
::::::
::::::
::::::
::::::
::::::
::::::With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.
::::::
::::::
::::::
::::::
::::::
::::::
::::::
::::::73's de Edd
::::::
::::::
::::::
::::::
::::::
::::::
::::::
:::::::::
:::::::::Hi Ed
:::::::the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
:::::::::
:::::::::
:::::::::
:::::::::If built as a hard wired plug in unit, could this be the unit ?
:::::::::
:::::::::Hot linked:
:::::::::
::::::::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::Or another alternative ?.....not showing the interconnects...
:::::::::
:::::::::Hot linked:
:::::::::
::::::::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::73's de Edd
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
::::::::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
::::::::::

:::::Hi Edd
:::Ok thanks again Edd,will give you update after I get and install caps,And have a Happy New Year
::Jim
:::Hi EDD
:I installed the 3 caps for the power suppy and a different 80 tube,plus some of the other caps brought up power slow watching for smoke and NO SMOKE all tubes lite can get some am stations but not to clear and not much autio on sw barely a sound tryed switching the alike tubes around but the same.do you think it may be a tube I have not had them checked because I dont have a tube tester.
:::
:::
:::
:::OK…then …here are the yellow markups of the sole 3 electrolytic filter capacitors , along with their install polarities, for that unit of yours. ~ 10 ufd @ 450 rating should do it.
::: The rest of the units olden PAPER capacitors would be best served by their being replaced with newer, more trouble free, poly / mylar types.
:::
:::Schema Referencing :
:::
:::
:::
:::
:::
:::
:::
:::73's de Edd
:::
:::
:::
:::
:::
:::
::::Just an update and a few questions, for one thing the 27 did lightup just could not see it with the lights on.I am trying to figure out the shematic on the thing and cant tell witch are electrolylic and witch are not and witch end would be + and - as I said I am new to this, I ordered some new caps just waiting for them.and from what you said I guess I better order a new tube socket. can you use the elctrolylic the the place of the waxed ones
::::Thanks
::::Jim
::::
::::
:::::
:::::
:::::
:::::
:::::
:::::From what you describe, it certainly looks like you might have LUCKED out and are merely having breakdown of the insulative characteristics of that #80 tube socket, with it having a conductive carbon trail burnt within that sockets material between the two smallest pins, which have the extreme potential of the AC HV secondary across them
:::::
::::: Replacement of that socket would take care of that problem, I probably am assuming the original to be of the cheap two part sheet bakelite construction, its replacement with a heftier voltage resistant ceramic / steatite type should give a half life of ~500 yrs…..(considering no “meece” passes water upon it, with its deposition of conductive salts and electrolyltes)
:::::
:::::
:::::Far better, for the problem being a mere tube socket, rather than the rare power t-former !.
:::::
:::::
:::::As per the one tube ….227 ….27… not lighting up. The filaments will be the LARGE set of 2 pins, so, since I am unsure of your the ohms metering medium to be utilized, unplug a brother tube [ one of the (2) # 56 tubes used as local oscillators in your set], that WAS lighting up, and enact a relative ohmic comparison.
:::::
:::::Resistance testing across the 2 large pins of a #56 should come up with a definitive resistive value…pretty much with an unwavering of its value…. if using a High Z based instrument.
:::::
:::::If using an older VOM, there may be enough of current drive in the low ohms function to show a shift in the slight warming up, and slight shifting of the filaments cold / vs / warmer resistance
:::::
:::::At any rate… you get the idea of what to now expect on testing that good tube….so…shift over to the questionable tube and probably be expecting NO low ohmic value, like you were reading on the tube with the known good filament.
:::::
:::::One new / used toobie .......
:::::then being required.
:::::
:::::
:::::
:::::Standing by…if the turkey doesn’t intefere.....gobba..gobba..GOBBA!
:::::
:::::
:::::73's de Edd
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::::Hi Edd
:::::::I pluged it in without the ux-280 and the other tubes allmost all lit up except a uy227 I did not see or smell any smoke.do you think the 280 tube could be shorted,the bakelite base on the tube is burnt between the two small pins.is there a way to check tube with a ohm meter.I am new to this and I really thank you for your help.
::::::Thanks
::::::Jim
:::::::
:::::::
:::::::
:::::::That is just the old numeration of the #80 tube and hopefully you did not just plug the set in without bringing it up slowly for evaluation by using a Variac.
:::::::Otherwise, just unplug the 80 tube in there now and try operating the primary only of the transformer along with the filaments . then keep a constant eye on it like a mother hen to see if there is any undue warming…or ‘moke….’moke I smell ‘MOKE.
:::::::Of coarse, realize that there will be some bit of remnant odor from the first mishap. BUT no stream of smoke coming out unless the transformer was actually damaged…irreparably.
:::::::
:::::::
:::::::73's de Edd
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::that looks like it do you know what the the tube number is in the power unit.there is a ux280 in there now and I don't know if it is the right one,someone else messed with the power unit before I got it.when I powered it up smoke started coming out around the tube in the power unit
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::With your additional info given on the receiver chassis proper, looks like the very first schematic reference cited meets all of those parameters.
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::73's de Edd
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
::::::::::::
::::::::::::Hi Ed
::::::::::the reciver has 10 tubes and the power unit has 1 tube 1 huge transformer 2 small one and 3 tall condensers plus the specker plugs into the power unit the reciver and power init are hard wired together
::::::::::::
::::::::::::
::::::::::::
::::::::::::If built as a hard wired plug in unit, could this be the unit ?
::::::::::::
::::::::::::Hot linked:
::::::::::::
:::::::::::: http://www.nostalgiaair.org/PagesByModel/868/M0029868.pdf
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::Or another alternative ?.....not showing the interconnects...
::::::::::::
::::::::::::Hot linked:
::::::::::::
:::::::::::: http://www.nostalgiaair.org/PagesByModel/867/M0029867.pdf
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::73's de Edd
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::
::::::::::::
:::::::::::::Does any one have any info on the R-105-A power unit.I can not find anything on it and it is wired to the R-105-A receiver unit.
:::::::::::::

Larry Hughes