Component check (limesdr mini)

shao · 13 August 2020 05:55

I have a limesdr mini board completly dead. No output from lsusb. And the led is orange.

Can anyone help me to see if there is some component missing or short circuit?

Thanks.

Zack · 18 August 2020 08:16

Was it working before?

shao · 18 August 2020 11:44

Yes. It was normal before. I suppose there might be component missing now. Or maybe some place is short circuit?

Zack · 18 August 2020 12:54

I see no obvious damages. Would check if both power supplies are OK. Would check on C185 and C188 capacitors. Should be 2.5V and 1.4V respectively.

shao · 19 August 2020 02:43

Thanks. I will check that.

shao · 9 September 2020 08:26

Hi Zack,

I did the check.
C188 is 1.4V, which is right. But C185 is only 1.24V.

On windows, this board is recognized as unknown device.