So far I can only get 1 of th3 45 in my philco to light. Will radio play with only 1 45 output tube?

Not well. If it has two 45s it has a push-pull output; running with just one tube will result in distorted sound. Try it and see; it won't hurt anything.

:Not well. If it has two 45s it has a push-pull output; running with just one tube will result in distorted sound. Try it and see; it won't hurt anything.
:
Thanks CV, playing a little tells me rest of tubes/radio ok

Does the other 45 tube have an open filament? Or just doesn't light in it's socket. Tried measuring between the filament pins of the tube. If no continuity might try resoldering the filament pins with a bit of fresh solder.

Clifton

::Not well. If it has two 45s it has a push-pull output; running with just one tube will result in distorted sound. Try it and see; it won't hurt anything.
::
:Thanks CV, playing a little tells me rest of tubes/radio ok
:

:Does the other 45 tube have an open filament? Or just doesn't light in it's socket. Tried measuring between the filament pins of the tube. If no continuity might try resoldering the filament pins with a bit of fresh solder.
:
:Clifton
:Hello Clifton, other 45 tube does show continuity between 2 larger pins, but surprising does not light up, had to melt a lot of solder dowm larger pins. will get back on it tonight [fri]
:
:::Not well. If it has two 45s it has a push-pull output; running with just one tube will result in distorted sound. Try it and see; it won't hurt anything.
:::
::Thanks CV, playing a little tells me rest of tubes/radio ok
::
:
:

Might try the 45 tube in the other socket to see if it lights. Might be a bad socket.

Clifton

::Does the other 45 tube have an open filament? Or just doesn't light in it's socket. Tried measuring between the filament pins of the tube. If no continuity might try resoldering the filament pins with a bit of fresh solder.
::
::Clifton
::Hello Clifton, other 45 tube does show continuity between 2 larger pins, but surprising does not light up, had to melt a lot of solder dowm larger pins. will get back on it tonight [fri]
::
::::Not well. If it has two 45s it has a push-pull output; running with just one tube will result in distorted sound. Try it and see; it won't hurt anything.
::::
:::Thanks CV, playing a little tells me rest of tubes/radio ok
:::
::
::
:
:

The radio should play with one 45 tube in ether socket. If not you may have a fault with the taped audio output transformer.

Warren,

I believe he mentioned that one of the 45s did not light up.

Clifton

:The radio should play with one 45 tube in ether socket. If not you may have a fault with the taped audio output transformer.
:
:

The 45 tubes in this set have their filaments wired in parallel. So, if one is lighting up, that pretty much exonerates the power transformer; and the audio output transformer is not relevant to this particular problem. So that leaves a wiring/socket or tube issue.

Swapping the two tubes as suggested is probably the fastest way to differentiate betwen tube problems and socket/wiring problems. The only thing that I would add is that sometimes these ancient tubes (and sockets!) acquire an oxidation on the pins which is nonconductive. Brightening up the pins of the "dead" tube with 600 grit sandpaper and scraping the socket contacts with an X-Acto knife might be helpful.

The 45 tubes in this set have their filaments wired in parallel. So, if one is lighting up, that pretty much exonerates the power transformer; and the audio output transformer is not relevant to this particular problem. So that leaves a wiring/socket or tube issue.

Swapping the two tubes as suggested is probably the fastest way to differentiate betwen tube problems and socket/wiring problems. The only thing that I would add is that sometimes these ancient tubes (and sockets!) acquire an oxidation on the pins which is nonconductive. Brightening up the pins of the "dead" tube with 600 grit sandpaper and scraping the socket contacts with an X-Acto knife might be helpful.

I apologize for the double post; I got distracted by my cat and forgot that I had already pushed the "go" button- so I pushed it again.

I did mean the one good 45 should light and play the radio in ether socket.

:I did mean the one good 45 should light and play the radio in ether socket.
:
Thanks fellows for comments, but sorry to say per xmfr and burnt out, was using a fused plug, thought that would blow before transformer burn out. Got another xmfr for all but 2.5 volts for tube filaments. Thinking ! of using separate xmfr for tube filaments voltage oth words 2 pwr xmfr turned on by ONE switch