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Re: problem testing v 9.0 USB control ... help!

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  • wnpauls
    Tony, Yes, I had it (USB) plugged in and I got all the correct voltages EXCEPT on the hairpin of R1. (Zero volts on R1). Paul ... connected to the board and
    Message 1 of 8 , Dec 1, 2008
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      Tony,

      Yes, I had it (USB) plugged in and I got all the correct voltages
      EXCEPT on the hairpin of R1. (Zero volts on R1).

      Paul

      --- In softrock40@yahoogroups.com, "Tony Parks" <kb9yig@...> wrote:
      >
      > The voltage at the hairpin of R1 will be present if the USB cable is
      connected to the board and plugged into a USB socket.
      >
      > 73,
      > Tony KB9YIG
      > ----- Original Message -----
      > From: wnpauls
      > To: softrock40@yahoogroups.com
      > Sent: Monday, December 01, 2008 10:32 AM
      > Subject: [softrock40] Re: problem testing v 9.0 USB control ... help!
      >
      >
      > I checked the new tests ... the hairpin on R1 should have about 90
      > mVdc on it.
      >
      > I get ZERO on it.
      >
      > Should I proceed with the other checks?
      >
      > thanks,
      >
      > Paul K0ZYV
      >
      > --- In softrock40@yahoogroups.com, "R. R. Robson" <rrrobson@> wrote:
      > >
      > > --- In softrock40@yahoogroups.com, "wnpauls" <wnpauls@> wrote:
      > > >
      > > > all the resistance checks were okay.
      > > >
      > > > all the voltages checks were okay, except
      > > >
      > > > R1 hairpin (U2-5) to ground 60-100 mVdc 96 mVdc
      > > >
      > > > I got 0 mVdc
      > > >
      > > > I checked the resistances and the diodes and all seemed okay and
      > > > connected correctly.
      > > >
      > > > Paul K0ZYV
      > > >
      > > Paul:
      > >
      > > After consultation with Jan G0BBL, I have modified the tests for
      the
      > > USB Control stage in the V9.0 RX. You might want to take a look
      > > at/try them.
      > >
      > > See: http://golddredgervideo.com/wb5rvz/RX_V9_0/02_usb.htm (and
      don't
      > > forget to hit the F5 refresh key)
      > > 73 de robby wb5rvz
      > >
      >
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