I’m having kind of the same issue with a newly reveiced Mini. Tried some local FM stations, but I can only hear some of them. Seems I can only receive stations under 100MHz. I hope it is just a software issue, as shipping took one month :(.
[ TESTING STARTED ]
->Start time: Sun Aug 19 18:25:51 2018->Device: LimeSDR Mini, media=USB 2.0, module=FT601, addr=24607:1027, serial=1D40F8773AE7A7
Warning: USB3 not available
Serial Number: 1D40F8773AE7A7[ Clock Network Test ]
->REF clock test
Test results: 20818; 34015; 47212 - PASSED
->VCTCXO test
Results : 6711056 (min); 6711216 (max) - PASSED
->Clock Network Test PASSED[ FPGA EEPROM Test ]
->Read EEPROM
->Read data: 12 06 1D 12 06 1D 02
->FPGA EEPROM Test PASSED[ LMS7002M Test ]
->Perform Registers Test
->External Reset line test
Reg 0x20: Write value 0xFFFD, Read value 0xFFFD
Reg 0x20: value after reset 0x0FFFF
->LMS7002M Test PASSED[ RF Loopback Test ]
->Configure LMS
->Run Tests (TX_2 → LNA_W):
CH0 (SXR=1000.0MHz, SXT=1005.0MHz): Result:(-44.8 dBFS, 5.00 MHz) - FAILED
->Run Tests (TX_1 → LNA_H):
CH0 (SXR=2100.0MHz, SXT=2105.0MHz): Result:(-32.1 dBFS, 5.00 MHz) - FAILED
->RF Loopback Test FAILED=> Board tests FAILED <=
Elapsed time: 3.08 seconds
Update 1: Rerunning the test or replugging the Mini do not change the result, Is my Mini broken?
Update 2: Added a screenshot showing FM stations. Note the noise pattern above 100MHz.