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What keeps frying H8000 PHY chips? Firewire fail

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Rosincore
Joined: Jan 1 2020
Posts: 8

What keeps frying H8000 PHY chips? Firewire fail

Rosincore
October 15, 2020 - 08:17 am

Twice now I've had to have the PHY controller chip replaced on the H8000 to get my Mac to recognize it. Anyone else have this problem? I suspect that it happens because I used a Thunderbolt-to-FireWire adaptor with a relatively new MacBook Pro (which of course has no hardwired FireWire port), as an older Mac with a FW800 port didn't fry the PHY (yes, it rhymes). Any help? Ideas? Much appreciated!

nickrose's picture
Eventide Staff
nickrose
Joined: Jan 17 2008
Posts: 4582
nickrose
October 16, 2020 - 08:37 am

This has been answered via support@eventide.com.

But for others who are interested:

It is not possible to say for sure what happened - we have replaced a few of these but not a lot.

Most likely are differences in the grounding of the two connected systems. Hot-swapping is worth avoiding. The fact that the previous setup did not do this suggests that it is a connection issue.

FireWire is pretty much obsolete now, and will probably go away entirely with ARM macs and OS11 (or the next one) - AES might be a better bet.

 
 

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Fender17
Joined: Jan 31 2017
Posts: 30
Fender17
October 17, 2020 - 10:13 am

nickrose wrote:

Most likely are differences in the grounding of the two connected systems. Hot-swapping is worth avoiding. The fact that the previous setup did not do this suggests that it is a connection issue.

Grounding may be tricky, Since the experience when I measured 80 V !!!! between two grounds in one room, I always plug all gear to one common plug.

And even smaller voltage difference fries any chip.....