[Boatanchors] [Kenwood] Kenwood TS-530SP

[howard holden]

No surprise there Pete!

________________________________________
From: manualman at juno.com <manualman at juno.com>
Sent: Sunday, September 15, 2024 7:42 PM
To: holden7471 at msn.com
Cc: boatanchors at mailman.qth.net; kenwood at mailman.qth.net
Subject: Re: [Kenwood] Kenwood TS-530SP

My Kenwood 599D Twins and my TS-830S, with 6146B's in the final, the idle
HV generally sits at 900 volts DC depending on line voltage.

Pete, wa2cwa


On Mon, 16 Sep 2024 02:24:52 +0000 howard holden <holden7471 at msn.com>
writes:
> No, the 880V is a bit high but a 6146 can handle it. And that was
> with no current draw.  I haven�t looked specifically at the
> bleeders but if they�re high value low wattage that�d not be
> unusual. Not the way I�d design a supply but who knows the
> philosophy there.
> Sent from my iPhone
>
> > On Sep 15, 2024, at 18:05, manualman at juno.com wrote:
> >
> > ?Look at items 6 and 9! Wouldn't you question this??
> >
> > Pete, wa2cwa
> >
> >
> > On Mon, 16 Sep 2024 00:23:31 +0000 howard holden
> <holden7471 at msn.com>
> > writes:
> >> I became the owner of a Kenwood TS-530SP transceiver on
> Saturday,
> >> supposedly working. The
> >> Receive seems to work OK.
> >>
> >> Observations below, I have not removed any circuit boards or
> >> attempted to measure any resistances, screen voltages, etc.
> Before I
> >> really get into this, any help would be appreciated.
> >>
> >> 1.        There is no RF output indicated following tuneup
> >> procedures in the manual.
> >>
> >> 2.        ALC is not working on 1.8, 18, and 24 Mhz. All other
> bands
> >> the ALC is OK, and is controllable with the carrier control and
> >> tunable with the Drive control.
> >>
> >> 3.        Receive drops on activating the Send switch.
> >>
> >> 4.        Send appears OK, and side tone is audible., even with
> the
> >> Send switch up.
> >>
> >> 5.        There is no plate current, no drop in plate voltage
> with
> >> keying.
> >>
> >> 6.        HV measures 880V.
> >>
> >> 7.        All tubes  6146s, and a 12BY7A test OK on a Hikock 600
> >> tube tester.
> >>
> >> 8.        Fan works OK.
> >>
> >> 9.        HV drops to about 75V after about a minute on hitting
> >> power switches.
> >>
> >> What am I missing? Ony one ever encounter similar issues with
> this
> >> beast?
> >>
> >> thanks and 73,
> >>
> >> Howie WB2AWQ
> >
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