[Hallicrafters] HALLICRAFTERS S77

[rbethman]

First -     Internet etiquette:  The use of all Uppercase letters is the 
equivalent to shouting.

Second - Pointing out any singular mistake by Hayseed is just plain 
wrong!  The number of kits they handle, carry, and assemble is worthy of 
automatic forgiveness of the only error that I have EVER heard of Tom 
and his family!

Third    - The low volume hum would have me going back and checking my 
recap job.  The likelihood is one is either not been attached to the 
original points that the old one was.  That or there is likely a cold 
solder joint.

Go back, recheck your work against the schematic.  Then one can begin to 
look for ideas as to this low hum.

Use a scope and start at the speaker terminals, and work back to where 
it goes away.

My $0.02.

Bob - N0DGN


On 8/4/2014 9:22 AM, Scott Cronin wrote:
> GOOD MORNING GROUP HAVE A TECHNICAL QUESTION
> I HAVE CHANGED OUT THE CAPS AND IT HAS MADE A VAST IMPROVEMENT
> THERE IS ONE ISSUE THAT SEEMS TO REMAIN
> WITH THE VOLUMN CONTROL TURNED DOWN THERE IS A LOW VOLUMN HUM COMING
> FROM THE BUILT IN SPEAKER
> ANY IDEA'S?
>
> AND THERE WERE 2 CAPS WRONG IN THE HAYSEED KIT
> THERE IS A ,05 MF MISSING AS WELL  AND THEY GAVE ME A  .0047 MF
> AND THE CORRECT VALUE SHOULD HAVE BEEN .047
>
> A SIMPLE CORRECTION
>
> MORE INTERESTED IN THE HUM
>
> THANKS SCOTT W4SO