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Vol control ?
#4

(07-26-2015, 05:21 PM)Radioroslyn Wrote:  Hi Eric,
The volume control is going to be a fairly low value as it is in the ant circuit. Probably 10K to 20k should be about right. As Mike said it important to replace the caps and then you can measure voltages to figure out what going on. Without replacing the cap you run the risk of burning up the power transformer which you don't want re replace. It special cause it has a 2.5v filament winding very hard to find.
If you have done the replacements measure the voltage on the plate of the 47. That would be on pin 2.

Terry

Thanks guys, 
Probably should have posted all I have done so here is what I have
All tubes tested and are good.
Re capped all.
I have replaced the resistors ( not that many and the dog bones were mostly way over)
2.5V filament ?  The 25z5 and the 43 have 25 volt filaments. the ballast tube the 185R8 checks out also.
The voltages are as follows
            screen     plate    cath     Fil
25Z5       ----       118     -----     61
43         120        122     35       37 
6c6         52         40        5         6.3
6d6        122        120     .6        12
Some are off not sure why. I have checked the RF coils and there good tomorrow I 'll do the ant.  
 


Messages In This Thread
Vol control ? - by Eric - 07-26-2015, 04:00 PM
RE: Vol control ? - by KCMike - 07-26-2015, 04:41 PM
RE: Vol control ? - by Radioroslyn - 07-26-2015, 05:21 PM
RE: Vol control ? - by Eric - 07-26-2015, 06:54 PM
RE: Vol control ? - by Radioroslyn - 07-26-2015, 07:51 PM
RE: Vol control ? - by Eric - 07-28-2015, 07:13 PM
RE: Vol control ? - by Radioroslyn - 07-28-2015, 08:45 PM



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