[R-390] Smoke got out

[Larry H]

Hi Dave,  Don't forget the octal plug in oven.  It operates on 6.3 and can
stick on or perhaps draw too much current when on.  sometimes you can look
at the oven and tell if it's over heated.

Regards, Larry

On Wed, Aug 1, 2018 at 1:36 PM, dog <agfa at hughes.net> wrote:

> Thanks Barry,
>
> Well, I'll have to re-wire it first and that will involve pulling some
> parts off in the osc section. What I can do is isolate that filament wire
> temporarily in the plug and put an ammeter on it while I plug in the tubes,
> one by one. Maybe even fuse it while I'm there so I don't burn it up again.
> I'm just not seeing what went wrong though, I really can't find anything
> strange. The wires got hot enough to melt onto others and it happened in
> about 3-4 seconds after I turned it from off to agc right after I was
> messing with the RF section tubes. I didn't put one in wrong, I checked
> that.
>
> Like I said it was acting strange to start with. After I changed some
> tubes and I would switch on the BFO, it would take a few seconds for the
> BFO to come on and go off too. Like the AGC went off. And then there's the
> noise level that would change after warming up a few minutes. It was
> working fine the other day.
>
> I hate switching RF sections between radios and am going to try to avoid
> that.
>
> Dave N3DT
>
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