[Heathkit] Heath SP-2717a power supply

[Dave Merrill]

Dave,

Take a look at the negative 300 volt circuit.  It's needed for the
voltage divider that includes the B+ control to work properly.  If you
need a copy of the manual, I have it as a PDF and could send it.

/dave
N9ZC

On Mon, Dec 14, 2009 at 4:43 PM, Dave <w8qwdave at peoplepc.com> wrote:
> I have one of these sypplies and while it works, I am having trouble regulating the B+ high voltage.  I get 300vdc at the low end to 350vdc on the high end, and can not vary the voltage otherwise. The 6L6GC tubes are brand new and the 6AU6 tested more than ok.  The resistors all test within a nominal tolerance. Anyone out there with a suggestion as to where to look next?
>
> Dave, W8QW