Nothing to do with tubes. ?Remove ceramic and inspect it. ?
On Thursday, November 7, 2024, 8:51 PM, Robin Midgett <RobinK4IDC@...> wrote:
Not sure about country of?origin, but the tubes were acquired from Command Technologies.?
I don't know what the tubes would have to do with it...the arc is prior to the tubes in the circuit.
Thanks,
Robin Midgett K4IDC
On Thu, Nov 7, 2024 at 7:30?PM Technotronic Dimensions via <steve=
[email protected]> wrote:
New tubes made in China maybe?
--
Steve Hearns [ KA2PTE ]
Technotronic Dimensions, VT [USA]
E-Mail: Steve@...
----- 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
>
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