[Boatanchors] [Kenwood] Kenwood TS-530SP

[howard holden]

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. 
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> 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
>