47-1227 - Radio will not tune in any stations. - Printable Version
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+--- Thread: 47-1227 - Radio will not tune in any stations. (/showthread.php?tid=20098)
47-1227 - Radio will not tune in any stations. - Lucky - 06-09-2019
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!!!!!!!!?!
RE: Radio will not tune in any stations. - Radioroslyn - 06-09-2019
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.
RE: Radio will not tune in any stations. - Lucky - 06-09-2019
Receive nothing from test point A or when connected to antenna
RE: Radio will not tune in any stations. - Radioroslyn - 06-09-2019
Ok inject a 455kc signal @ pin 1 of the 6ba6 and see what you get from the spkr.
RE: Radio will not tune in any stations. - Lucky - 06-09-2019
We get nothing from pin 1
RE: Radio will not tune in any stations. - Radioroslyn - 06-09-2019
How about pin 6 on the 7R7.
RE: Radio will not tune in any stations. - Lucky - 06-09-2019
Pin 6 works with. Get loud tone
RE: Radio will not tune in any stations. - Lucky - 06-09-2019
Pin 6 works. Hey loud tone.
RE: Radio will not tune in any stations. - Radioroslyn - 06-09-2019
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.
RE: Radio will not tune in any stations. - Lucky - 06-09-2019
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
RE: Radio will not tune in any stations. - jake wells - 06-09-2019
filament should be pin 3 & 4 and pin 6 should be 100v
RE: 47-1227 - Radio will not tune in any stations. - Lucky - 06-09-2019
pin 3 grounded at center of tube
pin 4 shows 6.6 volts ac
The tube is lit and working
RE: 47-1227 - Radio will not tune in any stations. - jake wells - 06-09-2019
pin 6 should not be reading -1.14 it should be 100V check the resistors and capacitors in that circuit.
RE: 47-1227 - Radio will not tune in any stations. - Lucky - 06-09-2019
Will check Tomorrow night.
RE: 47-1227 - Radio will not tune in any stations. - jake wells - 06-09-2019
Ok good luck.