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


It is currently Nov Fri 22, 2019 1:02 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 6 posts ] 
Author Message
 Post subject: attaching test lead to printed circuit board tube socket pin
PostPosted: Jul Sun 14, 2019 4:14 am 
New Member

Joined: Mar Fri 23, 2012 10:57 pm
Posts: 14
i have motorola am receiver that has a pcb connecting all the wires to tubes and components.
alignment with signal gen says to connect hi lead to pin 7 of converter tube, but tube socket is soldered to pcb ,no terminal on pcb.
what is the practical way that this is done.
i don't think i can get an alligator clip to hold on the pcb.
thanks
john


Top
 Profile  
 
 Post subject: Re: attaching test lead to printed circuit board tube socket
PostPosted: Jul Sun 14, 2019 4:17 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 33178
Location: SoCal, 91387
Make your own test terminal, by soldering a short lead to the pin 7 PCB landing or socket pin, on the upper side of the board.

_________________
\\\\\\\\\\\\\\\\\\\\\\\\He Who Dies With The Most Radios Wins//////////////////


Top
 Profile  
 
 Post subject: Re: attaching test lead to printed circuit board tube socket
PostPosted: Jul Sun 14, 2019 12:42 pm 
New Member

Joined: Mar Fri 23, 2012 10:57 pm
Posts: 14
thanks
i will do that
john


Top
 Profile  
 
 Post subject: Re: attaching test lead to printed circuit board tube socket
PostPosted: Jul Sun 14, 2019 4:59 pm 
Member
User avatar

Joined: Feb Sun 02, 2014 9:13 pm
Posts: 2033
Location: Roanoke, VA
The classic approach is to use a test socket adapter.

_________________
Dale H. Cook, Antique Radios / Test Equipment (GR/HP/Tek)
http://plymouthcolony.net/starcity/radios/


Top
 Profile  
 
 Post subject: Re: attaching test lead to printed circuit board tube socket
PostPosted: Jul Sun 14, 2019 5:50 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 5709
Location: Montvale NJ, 07645
I agree with the test socket adapter except in the case of an oscillator or converter tube, in which case I would take Fifties approach.


Top
 Profile  
 
 Post subject: Re: attaching test lead to printed circuit board tube socket
PostPosted: Jul Mon 15, 2019 12:29 pm 
Member
User avatar

Joined: Mar Tue 30, 2010 2:24 am
Posts: 8480
Location: Lehighton, PA.
Be very carefull applying heat to those early PCB boards. There is a tendency for the traces to fall off when heated. Personally I would use a test adaptor.

Larry

_________________
kb3wbb


Top
 Profile  
 
Post New Topic Post Reply  [ 6 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Tube Radio and 7 guests



Search for:
Jump to:  




























Privacy Policy :: Powered by phpBB