They probably liked the set and could not get the required batteries.
Lou
:I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
:
Maybe someone changed chassis? Enter tube numbers here:
http://www.grillecloth.com/sylvania/tubelist.php
Norm
:I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
:
If you can step the voltage up slowly, so much the better. But there is a good chance the radio will play.
:
Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
That takes a lot of work. Does the chassis look like it has been rewired?
Norm
::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
::
:Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
:
:
: Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
:
: That takes a lot of work. Does the chassis look like it has been rewired?
:
:Norm
:
:::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
:::
::Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
::
:
:
I don't see a ballast tube. Someone has made notations on the chassis next to each tube. For instance next to the socket for the 25Z6 is the notation "Z6" Next to the socket of the tube that I cannot identify it has the note "Q7" I don't see any large wire wound resistors and the only part that looks to be rewired is the power cord coming into the chassis. It is a cloth wire one wire goes to Pin 5 of the 25Z6 and the other wire goes to the on/off switch. The other side of the on/off switch goes to ground and one of the tabs of the volume. The strange thing is two wires coming in as the power cord had a quater inch of the insulation stripped and a wired wrapped around both and going to pin 7. I know that doesn't make since and I may be wrong, but it appeard to be a direct short bewteen the two wires. The only other component that appears to be an addtion is a electrolyitic capacitor with two 20MFD caps at 150 v. One positive lead is attached to pin 4 of the 25Z6 and the other to pin 4 of the 25L6. The rest looks original.
Q7 would be a 6Q7.
Does the line cord have three wires? It may have a third wire which looks like a wire wound resistor, thin wire wrapped around cord?
Pin #2 and #7 are filaments for all those tubes. If you have a line cord with resistance element a resistance wire will connect to one of these pins. Most likely on 25Z6.
Norm
::Ron
::
:: Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
::
:: That takes a lot of work. Does the chassis look like it has been rewired?
::
::Norm
::
::::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
::::
:::Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
:::
::
::
:I don't see a ballast tube. Someone has made notations on the chassis next to each tube. For instance next to the socket for the 25Z6 is the notation "Z6" Next to the socket of the tube that I cannot identify it has the note "Q7" I don't see any large wire wound resistors and the only part that looks to be rewired is the power cord coming into the chassis. It is a cloth wire one wire goes to Pin 5 of the 25Z6 and the other wire goes to the on/off switch. The other side of the on/off switch goes to ground and one of the tabs of the volume. The strange thing is two wires coming in as the power cord had a quater inch of the insulation stripped and a wired wrapped around both and going to pin 7. I know that doesn't make since and I may be wrong, but it appeard to be a direct short bewteen the two wires. The only other component that appears to be an addtion is a electrolyitic capacitor with two 20MFD caps at 150 v. One positive lead is attached to pin 4 of the 25Z6 and the other to pin 4 of the 25L6. The rest looks original.
:
If there is room in the cabinet, you could consider installing a filament transformer to run the heaters.
A 25 volt supply would work, with the 6 volt tubes in series with a resistor.
:Ron
:
: Q7 would be a 6Q7.
:
: Does the line cord have three wires? It may have a third wire which looks like a wire wound resistor, thin wire wrapped around cord?
:
: Pin #2 and #7 are filaments for all those tubes. If you have a line cord with resistance element a resistance wire will connect to one of these pins. Most likely on 25Z6.
:
:Norm
:
:
:::Ron
:::
::: Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
:::
::: That takes a lot of work. Does the chassis look like it has been rewired?
:::
:::Norm
:::
:::::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
:::::
::::Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
::::
:::
:::
::I don't see a ballast tube. Someone has made notations on the chassis next to each tube. For instance next to the socket for the 25Z6 is the notation "Z6" Next to the socket of the tube that I cannot identify it has the note "Q7" I don't see any large wire wound resistors and the only part that looks to be rewired is the power cord coming into the chassis. It is a cloth wire one wire goes to Pin 5 of the 25Z6 and the other wire goes to the on/off switch. The other side of the on/off switch goes to ground and one of the tabs of the volume. The strange thing is two wires coming in as the power cord had a quater inch of the insulation stripped and a wired wrapped around both and going to pin 7. I know that doesn't make since and I may be wrong, but it appeard to be a direct short bewteen the two wires. The only other component that appears to be an addtion is a electrolyitic capacitor with two 20MFD caps at 150 v. One positive lead is attached to pin 4 of the 25Z6 and the other to pin 4 of the 25L6. The rest looks original.
::
:
:
See if this lineup might mate up with your sets design . . . the one variant being the subbing of that one RF tube.
|
::::
There are just two wires coming into the set. When I received it there was not a plug on the end of the wires and this set has been in the basement for over 30 years of the owners parents home. At any rate it is not a resistor cord. I was wondering about replacing the filter caps and plugging it into a Variac and slowing bringing up the voltage to around 67 volts. But that is pretty much out of my comfort zone - any ideas?
::Ron
::
:: Q7 would be a 6Q7.
::
:: Does the line cord have three wires? It may have a third wire which looks like a wire wound resistor, thin wire wrapped around cord?
::
:: Pin #2 and #7 are filaments for all those tubes. If you have a line cord with resistance element a resistance wire will connect to one of these pins. Most likely on 25Z6.
::
::Norm
::
::::Ron
::::
:::: Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
::::
:::: That takes a lot of work. Does the chassis look like it has been rewired?
::::
::::Norm
::::::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
::::::
:::::Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
:::::
::::
:::I don't see a ballast tube. Someone has made notations on the chassis next to each tube. For instance next to the socket for the 25Z6 is the notation "Z6" Next to the socket of the tube that I cannot identify it has the note "Q7" I don't see any large wire wound resistors and the only part that looks to be rewired is the power cord coming into the chassis. It is a cloth wire one wire goes to Pin 5 of the 25Z6 and the other wire goes to the on/off switch. The other side of the on/off switch goes to ground and one of the tabs of the volume. The strange thing is two wires coming in as the power cord had a quater inch of the insulation stripped and a wired wrapped around both and going to pin 7. I know that doesn't make since and I may be wrong, but it appeard to be a direct short bewteen the two wires. The only other component that appears to be an addtion is a electrolyitic capacitor with two 20MFD caps at 150 v. One positive lead is attached to pin 4 of the 25Z6 and the other to pin 4 of the 25L6. The rest looks original.
:::
::
::
:
:
: : : :  : : : : : : : :Sir Ron . . . . . : : : :See if this lineup might mate up with your sets design . . . the one variant being the subbing of that one RF tube. : : :Skip on down past the initial ones that are using two 25L6's. : : : : : : :> > > < < < : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :73's de Edd : : : : : :Anything is easier to take apart than to put together. : : : : : :  : : : |
:
:
:
:
:
:
:
:
:
:
:There are just two wires coming into the set. When I received it there was not a plug on the end of the wires and this set has been in the basement for over 30 years of the owners parents home. At any rate it is not a resistor cord. I was wondering about replacing the filter caps and plugging it into a Variac and slowing bringing up the voltage to around 67 volts. But that is pretty much out of my comfort zone - any ideas?
:
:::Ron
:::
::: Q7 would be a 6Q7.
:::
::: Does the line cord have three wires? It may have a third wire which looks like a wire wound resistor, thin wire wrapped around cord?
:::
::: Pin #2 and #7 are filaments for all those tubes. If you have a line cord with resistance element a resistance wire will connect to one of these pins. Most likely on 25Z6.
:::
:::Norm
:::
:
:
:::::Ron
:::::
::::: Is there a ballast tube (may be one not identified), resistance line cord or large wire wound resistor in series with filaments? These tubes have 300 ma filaments and were used series wired before 50L6 etc.
:::::
::::: That takes a lot of work. Does the chassis look like it has been rewired?
:::::
:::::Norm
:
:
:
:::::
:::::::I have a Philco 37-33 http://www.nostalgiaair.org/PagesByModel/202/M0013202.pdf that I just pulled out of the cabinet. Everything that I have seen on this model says that it is a battery operated radio. When I pulled the chassis it is wired for AC with a completely different tube set up than the schematic and electrolytic capacitors, but no power transformer. It almost looks like it is set up like and all American 5! Any chance that Philco made and AC of this model? If not this is looking a bit beyond my skill set to restore if I have no schematic to reference, especially since I cannot identify one of the tubes. Thanks for any help - Ron
:::::::
:
:
:
::::::Thanks to all of you for your questions and suggestions. 37-33 is stamped on the chassis. I entered the known tubes into the database that was suggested and came up empty. This is what the set had in it - 25z6, 25L6, 6U7G, 6K8,and one tube that has not identification on it. I thought of replacing the filter caps and plugging it in, but the tube voltages do not add up to enough to handle 110V AC. I am stumped on this one. Could it be that a technition rewired it for AC at a lower voltage?
::::::
:
:::::
::::I don't see a ballast tube. Someone has made notations on the chassis next to each tube. For instance next to the socket for the 25Z6 is the notation "Z6" Next to the socket of the tube that I cannot identify it has the note "Q7" I don't see any large wire wound resistors and the only part that looks to be rewired is the power cord coming into the chassis. It is a cloth wire one wire goes to Pin 5 of the 25Z6 and the other wire goes to the on/off switch. The other side of the on/off switch goes to ground and one of the tabs of the volume. The strange thing is two wires coming in as the power cord had a quater inch of the insulation stripped and a wired wrapped around both and going to pin 7. I know that doesn't make since and I may be wrong, but it appeard to be a direct short bewteen the two wires. The only other component that appears to be an addtion is a electrolyitic capacitor with two 20MFD caps at 150 v. One positive lead is attached to pin 4 of the 25Z6 and the other to pin 4 of the 25L6. The rest looks original.
::::
:::
:::
::
:
:
I tried looking up the shcematics for the models that match the tube line up, but could not find them either on this site or at the Schematic Bank. Is there another place where I could find them?
I will be out of town for a week so please do not misinterpret my not responding beck to all of your suggestions. I greatly appreciate the help.
Ron