[Amps] Quieting SB-1000

Gudguyham at aol.com Gudguyham at aol.com
Sun Feb 15 10:54:45 PST 2009


The AL-80A is the same amp as the SB-1000 and I had one in here for repair  
and it needed a new fan too.  Needless to say I found out  that  changing the 
fan was no easy task.  I refused to remove the transformer and  painstakingly 
replaced the old fan with a new one, and indeed it was necessary  somehow to 
glue or tape the nuts to the fan before installation.  It truly  was a 
nightmare.  I think I had to hack up the old fan pretty bad to get it  out.  As I 
recall it was a nightmare to replace that fan, but I did do it  without removing 
the transformer.  I recall making a slight groove in the  side chassis so I 
could get a long screwdriver into the work area to tighten one  screw.  Replacing 
this fan is certainly NOT a job for the faint of  heart!  Needless to say I 
said a few choice words during this  process!  My mother would have surely put 
soap in my mouth if she heard me  while doing this job!!
Vic, sorry about your transformer hum, but transformers usually hum because  
they don't know the words. :-)  Lou
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