[R-390] First time R-390 Owner

[David Wise]

I had a snap crackle pop that turned out to be a wire wrapped around a sharp corner and shorting.  It was an IF amp screen supply.  Take a close look.
________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Barry <n4buq at knology.net>
Sent: Tuesday, August 12, 2025 3:07 PM
To: Norman Ryan <nnryann at yahoo.com>
Cc: R-390 Mailing List <r-390 at mailman.qth.net>; Adam Morehouse <morehouse90 at gmail.com>
Subject: Re: [R-390] First time R-390 Owner

Yes, snap, crackle, and pop is fun when it comes to your breakfast cereal - not so much when it comes to your radio.

73,
Barry - N4BUQ

> Hi, Adam,

> If the receivers have not been powered up lately, it's a good idea to soft-start
> them with a variac. Hook it up to your radio and gradually increase the voltage
> from zero to no more than, say, 115Volts. Then look and listen for anomalies.

> As a matter of course I routinely soft-start my receiver. Like us older folks, a
> gentle start helps a whole lot (nudge nudge wink wink)!

> Have fun!
> Norman

> On Tue, Aug 12, 2025 at 11:46 AM Barry < [ mailto:n4buq at knology.net |
> n4buq at knology.net ] > wrote:
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