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Philco 70
11/26/2012 6:42:35 AMJohn
I have recapped and checked tubes. Radio runs for about ten minutes and then the volume goes up. You can turn it down with the volume control. The volume control seems quite sensitive. A small movement makes a big change. How do you clean this volume control? Seems to be all sealed up and no place to put cleaner in.
11/26/2012 5:52:21 PMrghines1
Hi John,
Not familiar with the exact details of this control only than what I found on philcorepairbench.com. Its a dual wire element control, one for cathode bias, the other for the antenna, 210 and 5K ohms respectively. Some controls have crimp tabs that can be bent up. Otherwise may have to consider drilling a tiny hole in the body of the control but risk damaging elements.

http://www.philcorepairbench.com/volctl.htm

11/26/2012 11:51:57 PMLou
Volume control could be damaged John. If one of the wire elements is open you could get a condition like this. I would try ohming out the control as I turned it to see of it smoothly changes resistance. You could have an open element.

Lou

:I have recapped and checked tubes. Radio runs for about ten minutes and then the volume goes up. You can turn it down with the volume control. The volume control seems quite sensitive. A small movement makes a big change. How do you clean this volume control? Seems to be all sealed up and no place to put cleaner in.
:

11/28/2012 6:16:57 PMEdd
:Volume control could be damaged John. If one of the wire elements is open you could get a condition like this. I would try ohming out the control as I turned it to see of it smoothly changes resistance. You could have an open element.
:
:Lou
:
::I have recapped and checked tubes. Radio runs for about ten minutes and then the volume goes up. You can turn it down with the volume control. The volume control seems quite sensitive. A small movement makes a big change. How do you clean this volume control? Seems to be all sealed up and no place to put cleaner in.












Sir John . . . .



Since you now have that unit accessible for viewing, could you research some dimensions of the chassis pan for me ?


That would specifically be the WIDTH --DEPTH -- HEIGHT of the metal chassis for me.


Also if any other readers that would have access to a Peelco model 90 be able to give me the like dimensions of that units chassis pan.


I'm wondering if it happens to be the same basic sizing with variants in the chassis componets and holes punched.



Now . . . . .I can't think of any volume controls that are totally sealed up . .that will come to mind now.


Usually access is available at the point where they leave a slot for the 3 terminals to come out.

(Excepting Industrial Electronics/Military/NASA controls akin to the hermetic Allen Bradley unit depicted here):



http://www.talonix.com/images/pots/ABJ500K.jpg>

If I didn't want to pull apart a unit,for access, I would put a blob of modeling clay or refrigeration putty on an extreme outside rim and use a Dremel tools carbide cutoff wheel to JUST break through the surface shell of the metal.


(The putty catches metal flak and dust.)


Then I would use an insulin syringe to inject cleaners and a protective anti oxidant barrier/lube thru my micro access area.







73's de Edd





I believe that everything happens for a reason, and usually that reason is that someone screwed up !. . .







11/28/2012 10:00:12 PMHTML hiccup . . . .
::Volume control could be damaged John. If one of the wire elements is open you could get a condition like this. I would try ohming out the control as I turned it to see of it smoothly changes resistance. You could have an open element.
::
::Lou
::
:::I have recapped and checked tubes. Radio runs for about ten minutes and then the volume goes up. You can turn it down with the volume control. The volume control seems quite sensitive. A small movement makes a big change. How do you clean this volume control? Seems to be all sealed up and no place to put cleaner in.
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:Sir John . . . .
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:
:Since you now have that unit accessible for viewing, could you research some dimensions of the chassis pan for me ?
:
:
:That would specifically be the WIDTH --DEPTH -- HEIGHT of the metal chassis for me.
:
:
:Also if any other readers that would have access to a Peelco model 90 be able to give me the like dimensions of that units chassis pan.
:
:
:I'm wondering if it happens to be the same basic sizing with variants in the chassis componets and holes punched.
:
:
:
:Now . . . . .I can't think of any volume controls that are totally sealed up . .that will come to mind now.
:
:
:Usually access is available at the point where they leave a slot for the 3 terminals to come out.
:
:
:
:(Excepting Industrial Electronics/Military/NASA controls akin to the hermetic Allen Bradley unit depicted here):
:
:
:
::http://www.talonix.com/images/pots/ABJ500K.jpg>
:
:
:
:If I didn't want to pull apart a unit,for access, I would put a blob of modeling clay or refrigeration putty on an extreme outside rim and use a Dremel tools carbide cutoff wheel to JUST break through the surface shell of the metal.
:
:
:(The putty catches metal flak and dust.)
:
:
:
:
:Then I would use an insulin syringe to inject cleaners and a protective anti oxidant barrier/lube thru my micro access area.
:
:
:
:
:
:
:
:
:
:
:
:
:
:73's de Edd

:
:
:
:
:
:
:I believe that everything happens for a reason, and usually that reason is that someone screwed up !. . .
:
:
:
:
:


:

:
:
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:












Sir John . . . .



Since you now have that unit accessible for viewing, could you research some dimensions of the chassis pan for me ?


That would specifically be the WIDTH --DEPTH -- HEIGHT of the metal chassis for me.


Also if any other readers that would have access to a Peelco model 90 be able to give me the like dimensions of that units chassis pan.


I'm wondering if it happens to be the same basic sizing with variants in the chassis componets and holes punched.



Now . . . . .I can't think of any volume controls that are totally sealed up . .that will come to mind now.


Usually access is available at the point where they leave a slot for the 3 terminals to come out.

(Excepting Industrial Electronics/Military/NASA controls akin to the hermetic Allen Bradley unit depicted here):





If I didn't want to pull apart a unit,for access, I would put a blob of modeling clay or refrigeration putty on an extreme outside rim and use a Dremel tools carbide cutoff wheel to JUST break through the surface shell of the metal.


(The putty catches metal flak and dust.)


Then I would use an insulin syringe to inject cleaners and a protective anti oxidant barrier/lube thru my micro access area.







73's de Edd





I believe that everything happens for a reason, and usually that reason is that someone screwed up !. . .






<

12/1/2012 6:44:36 PMBrett
Edd,
My model 90 chassis measures two and five-eighths (2 5/8") inches high by ten and three-eighths (10 3/8") wide and fourteen and three-quarters (14 3/4")long. I hope this helps.

Brett
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:Sir John . . . .
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:
:
:
:Since you now have that unit accessible for viewing, could you research some dimensions of the chassis pan for me ?
:
:
:That would specifically be the WIDTH --DEPTH -- HEIGHT of the metal chassis for me.
:
:
:Also if any other readers that would have access to a Peelco model 90 be able to give me the like dimensions of that units chassis pan.
:
:
:I'm wondering if it happens to be the same basic sizing with variants in the chassis componets and holes punched.
:
:
:
:Now . . . . .I can't think of any volume controls that are totally sealed up . .that will come to mind now.
:
:
:Usually access is available at the point where they leave a slot for the 3 terminals to come out.
:
:
:
:(Excepting Industrial Electronics/Military/NASA controls akin to the hermetic Allen Bradley unit depicted here):
:
:
:
::http://www.talonix.com/images/pots/ABJ500K.jpg>
:
:
:
:If I didn't want to pull apart a unit,for access, I would put a blob of modeling clay or refrigeration putty on an extreme outside rim and use a Dremel tools carbide cutoff wheel to JUST break through the surface shell of the metal.
:
:
:(The putty catches metal flak and dust.)
:
:
:
:
:Then I would use an insulin syringe to inject cleaners and a protective anti oxidant barrier/lube thru my micro access area.
:
:
:
:
:
:
:
:
:
:
:
:
:
:73's de Edd

:
:
:
:
:
:
:I believe that everything happens for a reason, and usually that reason is that someone screwed up !. . .
:
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:
:
:


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