开云体育

----- Original Message -----
From: "Robin Midgett" <RobinK4IDC@...>
To: <[email protected]>
Sent: Thursday, November 07, 2024 8:10 PM
Subject: [ham-amplifiers] TenTec Centurion HV arc to ground

I'd like to know if any of you have suggestions as to what caused this HV
arc to chassis and hopefully, what to do to prevent it in the future.
Amp is a TenTec Centurion. It was at idle when the arc happened; no RF
applied. The glitch resistor took the brunt of the discharge, thank
goodness. I've replaced it, even though the original still measured
the correct resistance, it was visually damaged. The event spooked me...new
pair of 3-500Z tubes was in the amp; no apparent damage.
The insulator appears to be made of fiberglass. The glitch resistor is on
the opposite side of this aluminum panel. The HV feeds through from the
resistor via the machine screw. Any thoughts?

[image: IMG_20241107_184817794.jpg]


Thanks,
Robin Midgett K4IDC