Loading ...
Sorry, an error occurred while loading the content.

15118Re: [tracker2] otusb has no lights

Expand Messages
  • Scott Miller
    Jan 14, 2013
      Was it connected to anything else that had a separate ground return?

      Scott

      On 1/13/2013 2:49 PM, Brian Amos wrote:
      > some further testing shows that D3 has 12v in and nothing out, so that
      > is probably the culprit, although c3 seems to not be functioning either
      > (no voltage potential across the cap), so I assume whatever happened
      > happened caused those two at least to malfunction (possibly the voltage
      > regulator as well).
      >
      > If this is the case, why would it not function using power from the usb?
      > And why would all this happen on the 12v input area when I was using it
      > with the 12v supply side unhooked and powering from a 5v regulated supply?
      >
      > Brian
      >
      >
      > On Sun, Jan 13, 2013 at 1:06 PM, Brian Amos <bamos1@...
      > <mailto:bamos1@...>> wrote:
      >
      > Using your 12v cigarette lighter adapter into a 12v battery:
      > I get 12 v in from the DB-9
      > U1 registers no voltage difference between the CN4 8 pin (ground)
      > and either the 12v or the 5v side of the voltage regulator.
      > The diode D4 shows no voltage on any of the pins either.
      > R-11 shows 12v on the left and ~.6v on the right
      >
      > With 12v unplugged and using 5v usb power:
      > D4 shows 5v on top pin
      > cn4 pin 1 shows no voltage
      >
      > I am going to try to make time to check for a broken trace this
      > afternoon.
      >
      > Glad to know that this list is customer service.
      >
      > Thank you,
      > Brian KF7OVD
      >
      >
      > On Fri, Jan 11, 2013 at 11:10 PM, Scott Miller <scott@...
      > <mailto:scott@...>> wrote:
      >
      > What's the 12v power source? If it's one of our tracker cables
      > with a
      > cigarette lighter, unscrew the tip and check that the fuse is OK.
      >
      > The left side of the voltage regulator is the input and the tab
      > is the
      > output. You should see 12v at the left side, and 5v on the
      > right side.
      > Diode D4, down and to the right from there, separates
      > regulator power
      > and USB power. You should see 5v at one of the legs, and
      > slightly less
      > than that at the center pin.
      >
      > Scott
      >
      > On 1/11/2013 6:57 PM, Brian Amos wrote:
      > > Its not getting 5 volts with the usb powering it or with 12v.
      > The odd
      > > thing is with 12v power source the voltage regulator isn't
      > getting 12v
      > > either. Looks like I may have to call customer service Monday...
      > >
      > > Brian
      > > KF7OVD
      > > On Jan 11, 2013 10:57 AM, "Scott Miller" wrote:
      > >
      > > > If you've got a voltmeter, you can check the output of the
      > regulator and
      > > > see if it's getting 5v.
      > > >
      > > > Scott
      > > >
      > > > On 1/10/2013 3:08 PM, bamos1 wrote:
      > > > > I was using the otusb plugged into a 5v usb adapter plug
      > on my vehicle
      > > > > and the power flashed off and on quickly, now the otusb
      > will not light
      > > > > up with either 12v or connected to the USB. I have
      > determined that the
      > > > > 5v usb converter is loose and appears to have lost
      > contact on hitting
      > > > bumps.
      > > > >
      > > > > No lights come up but it appears to be drawing power
      > from the usb host.
      > > > > Windows and linux both are not recognizing the device
      > either.
      > > > >
      > > > > How can I fix this?
      > > > > Thanks,
      > > > >
      > > > > Brian, KF7OVD
      > > > >
      > > > >
      > > >
      > > >
      > > >
      > > > ------------------------------------
      > > >
      > > > Yahoo! Groups Links
      > > >
      > > >
      > > >
      > > >
      > >
      > >
      >
      >
      > ------------------------------------
      >
      > Yahoo! Groups Links
      >
      >
      > tracker2-fullfeatured@yahoogroups.com
      > <mailto:tracker2-fullfeatured@yahoogroups.com>
      >
      >
      >
      >
      >
    • Show all 15 messages in this topic