[Amps] Heathkit SB-1000 Arcing

[Thomas F Giella NZ4O]

I have an old Heathkit SB-1000 made in 1989. It has a new 3-500Z tube and 
new power supply capacitors.

The amplifier has developed and internal arc somewhere but I can't locate 
visually locate it. When the arc occurs the voltage drops from approximately 
3100 to 2900 volts.

So I presume it's occurring somewhere in the power supply. When the arcing 
isn't occurring power output is within the normal range.

My tech skills are not what they once were so any helpful comments would be 
much appreciated.

73 & GUD DX,
Thomas F. Giella NZ4O
Lakeland, FL, USA
nz4o at tampabay.rr.com

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