HELP! Konnekt 6 blue light (FireWire)

HELP! Konnekt 6 blue light (FireWire)

Own Konnekt 6 around 7 years, everything was fine.

After connecting to new pc, (with different firewire pci) blue light stop showing up. but Konnekt still show green lights (this mean Interface get power from FW).
But PC & Mac cant see card in system.

I guess something wrong with FireWire hardware inside my Konnekt 6.

with PC & Mac FireWire’s everything ok, and with drivers also. Konnekt 24 Works ok.

It’s definitely hardware issue. 
Btw, if i connect power supply konnekt also show green lights, but if i connect to FireWire, no blue light also

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