[Boatanchors] [Kenwood] Kenwood TS-530SP

[manualman at juno.com]

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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