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47-1227 - Radio will not tune in any stations.
06-09-2019, 06:51 PM
I have a Philco model 47-1227. It has been completely restored. All capacitors and resistors have been replaced. The audio works. We get sound from the record player but unable to tune in any stations. Have minis 2.5 volts at osc. tube. osc. tube does not change voltage when tuning dial is changed. No am or fm. Any ideal what's wrong? HELP!!!!!!!!?!
06-09-2019, 07:36 PM
Time to break out the signal generator and inject a modulated 455kc signal @ test point A. This is w/the set set up to receive an AM signal and see what you get from the spkr.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got it! Terry
06-09-2019, 08:05 PM
Ok inject a 455kc signal @ pin 1 of the 6ba6 and see what you get from the spkr.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got it! Terry
06-09-2019, 08:23 PM
How about pin 6 on the 7R7.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got it! Terry
06-09-2019, 08:45 PM
Ok so you have a problem around the 6BA6. Check the pin voltages according t o the service info. Also be sure the heater is lit.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got it! Terry
06-09-2019, 09:05 PM
pin 1. -.26 volts
pin 2. 0 volts pin 3. 0 volts pin 4. 0 volts pin 5. 280 volts pin 6. -1.14 volts pin 7. .06 volts Heater is lit 
06-09-2019, 09:38 PM
filament should be pin 3 & 4 and pin 6 should be 100v
06-09-2019, 09:56 PM
pin 3 grounded at center of tube
pin 4 shows 6.6 volts ac The tube is lit and working
06-09-2019, 10:02 PM
pin 6 should not be reading -1.14 it should be 100V check the resistors and capacitors in that circuit.
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