[Amps] SB-200 HV meter problem

[George & Marijke Guerin]

Dear Sam, et. al.,
    The high voltage is read from a voltage divider R3 and R4 which go from
the high voltage wiring to ground.  The connection between R3 and R4 is
wired to terminal 11 on the meter switch.
    My first guess is one of the three resistors making up R3 has opened up.
R3 is made up of Three 4.7 MegaOhm resistors in series.  It may just be time
to replace those three resistors.  The other possibility is that R4 has
shorted to ground so both sides of the meter switch are to ground in the HV
position.  R4 is supposed to be 15KiloOhms.  Since there is over 2000 volts
HV, I would use three 2-watt resistors to replace the existing R3.
    Good luck,  73
George    K8GG


----- Original Message -----
From: "Samuel Ramac" <samuel_ramac at hotmail.com>
To: <amps at contesting.com>
Sent: Saturday, April 05, 2003 7:05 AM
Subject: [Amps] SB-200 HV meter problem


> I have another SB-200 question.. (Sorry for all the questions, just got
this
> amp and is my 1st.)
>
> When I measure HV my meter does not do anything.  Except for this
problem,
> the amp seems to work well (600W on most bands).  The meter seems to work
> well indicating the plate current, SWR, grid current, and relative power.
>
> Any ideas?  Thanks
>
> Sam N2MXY
>
>
>
> - - - - - - - - - - - - - - - - - - - - - - - -
> Samuel C. Ramac
> samuel_ramac at hotmail.com
>
>
>
>
>
>
> _________________________________________________________________
> MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*.
> http://join.msn.com/?page=features/virus
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>