Help with IF cans on SX-42
			 
			 
			
		
		
		
			
			Hi. 
 
I suspect that the capacitor for the 10.7 MHz filter on one of IF can 
of my SX-42 is shot.  I've been reading about the problem with the 
silver mica caps on IF cans here but I don't know whether the SX-42 
has these caps in the IF cans. 
 
This is my first major boatanchor restoration and I already replaced 
all paper wax caps and electrolytics and checked all tubes.  LO works 
fine on both frequencies.  AM works great but the FM is dead (or 
anything on the 2 upper bands that use the 10.7MHz IF filters. I can't 
pass a 10.7MHz modulated signal through the 2nd IF stage. An 
interesting thing I noticed is that when I inject a 455KHz through the 
2nd IF stage and switch the band to the upper 2 (FM bands) the signal 
gets stronger. 
 
Question: is there a way to disassemble the IF can in the chassis or I 
have to remove it?  How do I disassemble it? 
 
Also, what is the value for the capacitor on the 10.7MHz part of the 
IF can? 
 
Thanks for the help. 
-- 
Elias 
		 
		
		
		
		
		
		
		
		
	
	 |