47-1227 - Radio will not tune in any stations.
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
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!!!!!!!!?!
(This post was last modified: 06-09-2019, 06:53 PM by Lucky.)
Posts: 7,305
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Joined: Dec 2009
City: Roslyn Pa
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!
Terry
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
Receive nothing from test point A or when connected to antenna
Posts: 7,305
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
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!
Terry
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
We get nothing from pin 1
Posts: 7,305
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
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!
Terry
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
Pin 6 works with. Get loud tone
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
06-09-2019, 08:38 PM
Pin 6 works. Hey loud tone.
(This post was last modified: 06-09-2019, 08:39 PM by Lucky.)
Posts: 7,305
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
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!
Terry
(This post was last modified: 06-09-2019, 08:46 PM by Radioroslyn.)
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
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
(This post was last modified: 06-09-2019, 09:09 PM by Lucky.)
Posts: 194
Threads: 43
Joined: Jan 2019
City: Brownsville 42210
State, Province, Country: Kentucky
filament should be pin 3 & 4 and pin 6 should be 100v
(This post was last modified: 06-09-2019, 09:48 PM by jake wells.
Edit Reason: error
)
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
pin 3 grounded at center of tube
pin 4 shows 6.6 volts ac
The tube is lit and working
Posts: 194
Threads: 43
Joined: Jan 2019
City: Brownsville 42210
State, Province, Country: Kentucky
pin 6 should not be reading -1.14 it should be 100V check the resistors and capacitors in that circuit.
Posts: 33
Threads: 3
Joined: May 2018
City: Middletown, PA
State, Province, Country: Pa
Will check Tomorrow night.
Posts: 194
Threads: 43
Joined: Jan 2019
City: Brownsville 42210
State, Province, Country: Kentucky
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