[hpsdr] Mercury sensitivity problem

[Greg - ZL3IX]

Hi Jose,

Just make sure you check the soldering before changing the chip. The 
soldering is much more likely to be the problem.

73, Greg, ZL3IX


On 2012-09-09 06:58 a.m., Jose V. Gavila wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi all,
>
> I have uploaded a video of the problem. Sorry, comments are in 
> Spanish, but it is easy to understand what happens if you read below. 
> It is at:
>
> http://jvgavila.com/hpsdr/samples/mercury_preamp_failure.mpg
>
> I start the unit and sensitivity is way down the right one. Then, I 
> apply cooling spray (you will hear the noise) to the Mercury preamp 
> and, suddenly, it comes to life. In short time, once it gets hot, it 
> fails again.
>
> I think I have a culprit :-)!
>
> Regards,
>
> JOSE


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