You said "On the other board with the identical Sheme - all OK." - in case if you have two absolutely identical boards, and one works perfect, but another does not work properly, than this appears to be a quality issue of the particular board, but not schematic error or design mistake. To debug the issue, please debug the board - check basic things like power supplies, power sequencing, clocking, reset circuit, debug interface circuit and etc. It can be also recommended to verify soldering by using X-ray examination.
In case if you have similar, but not absolytely identical boards, than please let me know the full list of differences, I will try to analyze to predict, which change may affect the behavior of the board.
Have a great day,
Alexander,
TIC
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