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Subject: Re: Dead JBM 20
From: Markus Grebenstein (
Date: 2004-08-23

Probably same problem as mine. Check voltage on pin 41 and 42 of ATA.
You have to measure with the HD disconnected and connected. On my unit
voltage goes down to 1.8V when the HD tries to spin up. Sadly I still
haven't found (what I'm looking for *g*) the bad guy on the pcb. Sadly
the schemes don't fit exactly to my JBS 20.

Linus Nielsen Feltzing schrieb:

> wrote:
>> Linus:
>> Thank you for the suggestion - I had examined the battery connections
>> per that URL - they looked fine but I reinforced them anyway -
>> unfortunately, all to no avail. I also tried a different, fresh set
>> of batteries, but that too did not help.
> Hmmm. Can you measure the voltage on the HD? Check the ATA specification
> for the pinout.
> However, I suspect you will see 5V, but there isn't enough current to
> start the drive...
> Linus
> _______________________________________________

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