Home  Resources  References  Tubes  Forums  Links  Support  Sale  Search 



   < Previous Message Index Next Message >   


Antique Radio Technical Forum
Zenith 5S56 Voltage on Chassis

Posted by Will Hodges on 11/27/2005 22:53

:The rectifier tube is OK. The 5Z4 has a cathode and is rated at 125ma. The 5Y3 is directly heated and is rated at 135ma. Both should be OK in this application.
:
:I still want to go back to the transformer. It just sounds exactly like the correct symptom for a short from the primary to the rectifier filament winding. When you measured from the rectifier pins to the primary (or AC line cord with the switch closed) did you put your ohmmeter on it's higher ranges to check for high resistance shorts? You probably did, but I am at a loss to explain this any other way. The only other thing I can think of, and I've never seen it before, is a transformer short that is only there when power is applied.

Tony,
Just got your resopnse. I have an auto rangeing meter. I just measured it again and this is what I found. From pin 2 to one side of the line cord I get 429 ohms and from the other side I get infinity (OL).
From pin 8 I get 421 ohms and OL. I am counting the pins counter clockwise from the index as viewed from the top. Whatcha think?
Will


Zenith 5S56 Voltage on Chassis 
Will Hodges 11/24/2005 23:22 
TonyC 11/24/2005 23:58 
TonyC 11/25/2005 07:54 
TonyC 11/25/2005 08:05 
Will Hodges 11/25/2005 22:52 
Will Hodges 11/25/2005 22:53 
will Hodges 11/25/2005 23:00 
Will Hodges 11/25/2005 23:24 
Thomas Dermody 11/26/2005 00:15 
Thomas Dermody 11/26/2005 00:20 
TonyC 11/26/2005 13:23 
TonyC 11/26/2005 14:17 
Will Hodges 11/26/2005 15:30 
Thomas Dermody 11/26/2005 22:53 
Will Hodges 11/26/2005 23:47 
Billy Richardson 11/27/2005 09:37 
TonyC 11/27/2005 10:58 
Thomas Dermody 11/27/2005 14:35 
Will Hodges 11/27/2005 17:25 
TonyC 11/27/2005 18:17 
Will Hodges 11/27/2005 22:53 
Will Hodges 11/27/2005 23:04 
Thomas Dermody 11/28/2005 00:16 
Billy Richardson 11/28/2005 11:09 
Thomas Dermody 11/28/2005 12:06 
TonyC 11/28/2005 10:19 
Rick Skowronek 11/28/2005 20:07 
Thomas Dermody 11/28/2005 21:57 
Donnie Land 11/30/2005 21:39 

   < Previous Message Index Next Message >   




© 1996-2004 Nostalgia Air