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Antique Radio Technical Forum
zenith t.o. h-500 bcb sia switch

Posted by Bill G. on 07/06/2009 08:59

Hi Jim,
Neither Selenium rectifier, wave magnet nor 1R5 has anything to do with this problem.
It sounds like your switch is out of adjustment. The metal connections that make the switch are going past the contacts.
Using an ohm meter and schematic you ought to be able to track down the switch section that has the problem. Once located you may be able to find out how to adjust it back.
The band switch mechanism is quite complicated on this so don't work on it whne you are tired.

Best Regards,

Bill Grimm


zenith t.o. h-500 bcb sia switch 
jim 07/02/2009 16:58 
Doug Criner 07/02/2009 17:39 
Walt 07/02/2009 18:00 
Lewis L 07/02/2009 18:05 
jim 07/02/2009 20:43 
jim 07/02/2009 20:55 
Doug Criner 07/05/2009 16:17 
Joe 07/02/2009 18:28 
JIM 07/02/2009 21:04 
SteveB 07/06/2009 08:27 
Bill G. 07/06/2009 08:59 
Radiodoc 07/07/2009 16:44 
Joe 07/07/2009 17:20 

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