Kama Connect 2 corrupts my 3.5" IDE disk

[sbjaerum]

OK, thanks.
Will let you know how it goes when the new cable arrives.

[hiroshige]

The molex adapter has been shipped today

[sbjaerum]

I have now received the molex adapter, and I am sorry to tell that the Kama Connect 2 does not work with this adapter either. I don't get the message about a corrupt filesystem immediately after the disk is plugged in. But the CRC test fails, and eventually, the file system corruption message pops up.

What next to do?

Steinar

[hiroshige]

Hello Steinar,

this looks as if the Device is defective completely. Please send it for RMA to the shop, where you bought your KC2 - sorry for that.

Cheers,
Stefan

[sbjaerum]

I did some more testing before returning the unit.

I used KC2 for a while, powering the disk from the PC power supply. It seems to work reliable when the disk is powered this way. Did some file copy tests with CRC checking, and I never got a failure.

I also tried to replace the original power brick with a universal one that I have. I configured the power supply to 12/5A, and plugged it into KC2. I got the exact same problem with my disk as with the original power supply.

There is a regulator inside KC2 producing 5V out to the Molex connector from the external 12V supply. I suspect there is a problem here in that my KC2 cannot supply enough current on the 5V line when it is loaded with my disk. The disk is rated 5V/0.75A and 12V/0.9A.

My KC2 will now be returned. Not sure if I will try a second one...

[hiroshige]

Hello sbjaerum,

for me it sounds as if there is something defective inside of the KC2-module, sorry for that.

Stefan

[sbjaerum]

Originally Posted by hiroshige

Hello sbjaerum,

for me it sounds as if there is something defective inside of the KC2-module, sorry for that.

Stefan

That was my point. And my suspicion is that the problem is with the regulator delivering the 5V line out to the Molex adapter.

What I doubt a bit is if a supposedly working KC2 is able to deliver enough current to my disk. The disk is rated at 5V/0.75A and 12V/0.9A.

If there is a spec on the power supply capabilities of the KC2, those numbers would make it easier to assess whether a new KC2 unit would work any better than the one I have now returned...

[hiroshige]

I will ask the product development for info.