[Hallicrafters] update on SX 28A

[Richard Knoppow]

     I agee with Jacques, hot chokes are often due to leaky 
filter capacitors. Replacing the caps will allow the chokes to 
run much cooler. A choke that gets hot enough to melt out the 
potting compound _may_ have developed a shorted turn but I wold 
go after the caps first.
    Its possible the inductance and DC resistance of the chokes 
is in the specifications somewhere. Resistance is easy to measure 
but inductance depends on the DC current. The specs for the choke 
should give the inductance and indicate the current at which it 
is measured.

On 3/15/2022 8:29 PM, Jacques Fortin wrote:
> John, maybe you have to understand why the choke is overheating first !
> 
> 73, Jacques, VE2JFE in Montreal
> 
> Folks, I may have jumped the GUN !!  checked out the "smelly" SX 28 A and found that the power supply Choke positioned beneath the power transformer is overheating and OOZING black "stuff". So hopefully the problem is the choke in the power supply. Regardless, I will need a choke for the SX 28A receiver. Maybe I can find a choke for the SX 28 A.
> 73, John, K5PGW
> 
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL