# LimeSDR Mini Test LNAW Fail

**URL:** <https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163>\
**Category:** LimeSDR\
**Created:** [10 February 2019 09:48 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163 "2019-02-10T09:48:01Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Maurish91](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@Maurish91](https://discourse.myriadrf.org/u/Maurish91)\
**Post date:** [10 February 2019 09:48 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/1 "2019-02-10T09:48:01Z")

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I have a LimeSDR Mini, with the QuickTest i have this output:

[TEST STARTED]  
-\>Start time: Sun Feb 10 10:41:00 2019

-\>Device: LimeSDR Mini, media=USB 3, module=FT601, serial=1D40F7476890F5, index=0  
Serial Number: 1D40F7476890F5

[Clock Network Test]  
-\>REF clock test  
Test results: 3787; 16984; 30181 - PASSED  
-\>VCTCXO test  
Results : 6711019 (min); 6711174 (max) - PASSED  
-\>Clock Network Test PASSED

[FPGA EEPROM Test]  
-\>Read EEPROM  
data: 18 06 29 18 06 29 2  
-\>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):  
-\>On board loopback test:  
Test 1:(SXR=1000.0MHz, SXT=1005.0MHz, TXPAD=8): Result:(-28.5 dBFS, 5.00 MHz) - FAILED  
-\>Configure LMS  
-\>Run Tests (TX\_1 → LNA\_H):  
-\>On board loopback test:  
Test 1:(SXR=2100.0MHz, SXT=2105.0MHz, TXPAD=8): Result:(-16.8 dBFS, 5.00 MHz) - PASSED  
-\>RF Loopback Test FAILED

=\> Board tests FAILED \<=

Elapsed time: 4.93 seconds

> **Screen IMG**
>
> ![Screenshot%20(1)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/a/ab762b106582be27cb6170654e15fe77587f2159.jpeg) ![Screenshot%20(2)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/8/8a4ccc5063de88167f94f1f6eb01769a8c50dfe1.jpeg) ![Screenshot%20(3)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/7/71af65db2fc94b66bf21ba4e8a7d53d142444b2e.jpeg) ![Screenshot%20(4)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/4/41c764e405b743b4c0eca4fa22f58df48ad52aff.jpeg) ![Screenshot%20(5)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/b/b14115a6481d9e16b4f2d8d8d5609fe56c32a916.jpeg) ![Screenshot%20(6)](https://canada1.discourse-cdn.com/flex034/uploads/myriadrf/original/2X/b/b803df5e5842ff753654a373e1d721b9f2723ce8.jpeg)

Is it normal??

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<div class="post-metadata">

**Author:** ![Maurish91](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@Maurish91](https://discourse.myriadrf.org/u/Maurish91)\
**Post date:** [11 February 2019 14:25 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/2 "2019-02-11T14:25:25Z")

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I made this test both with Windows 10 than Ubuntu 18.04.  
I don’t know if internal LNA is broken.  
Anyone can suggest to me some test for verify that is all ok?

Thank You

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**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [11 February 2019 19:15 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/3 "2019-02-11T19:15:59Z")

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It looks as though there has been damage to the TX\_2 \> LNA\_W path, hence the reduced level. This could be physical damage or overload on input.

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<div class="post-metadata">

**Author:** ![Maurish91](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@Maurish91](https://discourse.myriadrf.org/u/Maurish91)\
**Post date:** [12 February 2019 09:41 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/4 "2019-02-12T09:41:03Z")

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What could i do? Can i fix it?

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<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [12 February 2019 10:46 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/5 "2019-02-12T10:46:07Z")

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It’s unlikely that this is something you could fix yourself, unless you can see physical damage and are confident in repairing this.

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<div class="post-metadata">

**Author:** ![Maurish91](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@Maurish91](https://discourse.myriadrf.org/u/Maurish91)\
**Post date:** [12 February 2019 10:57 UTC](https://discourse.myriadrf.org/t/limesdr-mini-test-lnaw-fail/4163/6 "2019-02-12T10:57:40Z")

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But i didn’t do anything strange… I ever used a simply dipole antenna. If is a damage on the board, like a capacitor, or resistor i can try to do something.  
Otherwise i can’t do anything…