ZTEX 1.15y: High speed FPGA configuration failed ...

[fossil]

Hi ALL,

I'm running ztex 1.15y cluster.
Sometimes the boards disappears.
To get it back I pressing r<Enter> in console and the board redetected and restarted.
But sometimes I get the messages like
"
Warning: Error uploading bitstream: FPGA configuration failed: DONE pin does not go high, possible USB transfer errors (INIT_B_HIST=222; 0 bytes got lost): Retrying it ...
Warning: Error uploading bitstream: FPGA configuration failed: DONE pin does not go high, possible USB transfer errors (INIT_B_HIST=222; 0 bytes got lost): Retrying it ...
Warning: High speed FPGA configuration failed, trying low speed mode:Error uploading bitstream: FPGA configuration failed: DONE pin does not go high, possible USB transfer errors (INIT_B_HIST=222; 0 bytes got lost): Trying low speed mode
"
Then I go to another console and reprogram that particular board by its id.
These messages stop coming to console and the board get redetected successfully or I need to press r<Enter> again to refresh.

Q: does anybody know the easier way to get rid of this trouble?

With best regards,
fossil

[1714755895]

1714755895

[1714755895]

1714755895

[BitcoinINV]

Does it look like you got any broken welds on the board? check near the FPGA itself.