Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Jun Sun 16, 2019 5:39 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 7 posts ] 
Author Message
 Post subject: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 2:14 am 
Member

Joined: Apr Sat 29, 2017 6:22 pm
Posts: 114
I have one end of the battery cable plugged into the 3q5 socket. It was how I received it. I get small filter hum with it this way. I unplugged it and plugged in a 3q5 now I get nothing from the speaker, the neon lamp is flashing fast. With the cable plugged into the socket it flashes slowly. I don't understand this, could someone explain this? Any ideas?


Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 2:26 am 
Member

Joined: Nov Tue 14, 2017 5:09 am
Posts: 1507
Location: Austin, Texas
If you powered the radio on AC with the battery plug in the 3Q5 socket, it's likely you have several damaged components.

Jay


Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 2:33 am 
Member

Joined: Apr Sat 29, 2017 6:22 pm
Posts: 114
Drats! Such as what components?


Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 2:40 am 
Member

Joined: Nov Tue 14, 2017 5:09 am
Posts: 1507
Location: Austin, Texas
First off, I don't understand how the battery cable could plug into the 3Q5 socket. It should have one pin off center that would prevent it from plugging into a tube socket. Does the cable connector look like the one on the schematic or is it something different?
Attachment:
Bat-1.png
Bat-1.png [ 49.9 KiB | Viewed 355 times ]



Jay


Last edited by JnTX on Jul Thu 19, 2018 2:47 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 2:47 am 
Member

Joined: Apr Sat 29, 2017 6:22 pm
Posts: 114
The offset pin goes right into the keyway of the socket. From what I can tell it matches.


Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 3:02 am 
Member

Joined: Nov Tue 14, 2017 5:09 am
Posts: 1507
Location: Austin, Texas
It's difficult to say what might have been damaged but it looks like you can short the plate pin to ground which would explain the hum from the speaker. The power supply was probably in high overload. Depending on switch positions, you may have applied B+ to the tube filament string which would have burned out at least one tube. You may have a lot of debug to do.

Jay


Top
 Profile  
 
 Post subject: Re: Stewart warner 9007 G questions
PostPosted: Jul Thu 19, 2018 3:47 am 
Member

Joined: Apr Sat 29, 2017 6:22 pm
Posts: 114
Sure enough 2 tube were out. I am getting an extremely weak signal through it now at least it's working! I'll order some known good tubes and troubleshoot from the. I think it's in the audio stage. Thanks!


Top
 Profile  
 
Post New Topic Post Reply  [ 7 posts ]  Moderators: Marcc, Norm Leal

All times are UTC [ DST ]


Who is online

Users browsing this forum: hockingcountyhillbilly, JnTX and 9 guests



Search for:
Jump to:  




























Privacy Policy :: Powered by phpBB