[Skimmertalk] QS1R under SkimSrv cycles between ready/usb bulk read failed

[Jeff Blaine]

I suppose that regulator shutdown may be at the root.  Set the external 
power supply back to 5.00V and it's been smooth over the last few days 
since the change.

Prior to that, the external power supply was reading 5.33V going into 
the QS1R.  I had set it a bit high because I know the QS1R is sensitive 
to slightly low input voltage.  Apparently it's also sensitive to 
slightly high voltage.

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com

On 08-Sep-18 6:40 PM, Bob Wilson, N6TV wrote:
> Did you have any cooling fan on it?  Most QS1Rs eventually fail due to 
> heat without one, usually the 5V regulator.
>
> Check the 2A power supply voltage, with and without the QS1R loading 
> it down (it's normal for PS voltage to drop below 5V when the QS1R is 
> running Skimmer Server).
>
> 73,
> Bob, N6TV
>
> On Sat, Sep 8, 2018 at 11:06 AM, Jeff Blaine <KeepWalking188 at ac0c.com 
> <mailto:KeepWalking188 at ac0c.com>> wrote:
>
>     My QS1R seems to be developing a problem.  It will run fine for a
>     few hours to a few days.  And then will start cycling between a
>     "SDR receiver OK" indication and a "usb bulk read failed
>     indication" - with the cycling lasting about 4-5 seconds for each
>     indication.  If I cycle power, it's fine again for awhile.
>
>     Was hoping others may have had a similar problem and know what the
>     solution is?
>
>     73/jeff/ac0c
>     alpha-charlie-zero-charlie
>     www.ac0c.com <http://www.ac0c.com>
>
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