I am having issues with my LimeSDR USB (v1.4s).
When I first got it it was working fine, and has performed correctly for the next months or so. Then, it started giving me symptoms such as:
- not replying correctly to any commands (the infamous " Read ( 64 bytes ) failed")
- flashing firmwares not working (incorrect gateware version 0 rev 0 upon completion)
It was random at first, and disconnecting/reconnecting power supply would fix it, then it got worse and worse to the point that now, my LimeSDR has been completely dead for months. I tried changing OS, cables, power supply, firmware version etc but nothing fixed it.
Then recently, I have stumbled upon topics from other LimeSDR users pin-pointing issues with their devices to the soldering of their USB controller. Said topics mention that by heating up USB controller chip, LimeSDR would start working again until the inevitable cooldown.
So having nothing to lose I tried it, and bingo:
Before heating up:
After heating up a few minutes:
When heated up all other applications work perfectly, I tested with GNURadio and GQRX
Does my reasoning and the evidence I have collected seem conclusive to you too as to the fate of my board ? I am assuming this is a problem common-ish amongst early batches of the LimeSDR-USB.
Thanks and best regards,
EDIT; edited information about loopback test
EDIT 2; added link to other topic on described issue