If the floppy or tape drive or whatever cuts in and out, your PC won't
lock up. You should be tightening the female connectors connected to
the PS, not the males on the HD (but perhaps that is what you did and
I misunderstood what you said.) I suggest again that you try a
connector on a different cable in the PS; it may be that there is a bad
solder joint in the PS on the wires you are using.

It wouldn't hurt to reseat the SCSI adapter if you haven't already done
that.

Analabha Roy wrote:

> Bennett Price wrote:
>
>
>>First thing to do is make absolutely sure that the power connector to
>>the drive is good. While it may be hard to pull off, that still allows
>>a conductor to be loose. Use another power connector (not power supply)
>>if one is available and/or squeeze the individual sockets with a long
>>nose pliers. Sometimes the springy steel in the connectors isn't
>>sufficiently springy and as things heat up and cool down contact is
>>lost. I doubt very much that the problem is in the adapter, the scsi
>>cable, or the terminator
>>
>
>
>
> Thanks for the info. It seems a bit odd that the connector would be loose
> only for the scsi drive and not for all the other devices. Are SCSI hdds
> specially sensitive to power fluctuations that may result from marginally
> loose connectors? I did tighten the connectors with pliers, though I was
> afraid to apply too much strength as I could damage the drive physically
> (I'm too poor to risk that, the bloody hdd cost $150 even as an OEM). How
> shock-and-shear resistant are these things anyway? I looked at the
> published values, but since I don't know how much force I am applying
> (exactly in kgwt or pounds or whatever), they don't help much.
>
>
>
>
>
>
>>Analabha Roy wrote:
>>
>>>Hi,
>>>
>>>
>>>
>>> I have a Seagate ST336607LW SCSI hard drive where I've installed my
>>> Linux
>>>(FC3) & windoze root partitions. It is a 68 pin HD with no internal
>>>termination. My scsi controller is an SIIG AP-20 PCI adapter (50 pin with
>>>internal auto-termination). I connected my scsi card to my scsi hard
>>>drive as follows:
>>>
>>>
>>>
>>>
>>> 50 pin ribbon
>>>50-pin card---------------->50-pin terminator-->50-68 pin adapter-->SCSI
>>>Drive
>>>
>>>
>>>
>>> The hdd is on a dedicated connection to the power supply (no other
>>> devices
>>>chained to it along that power cable).
>>>
>>>
>>>
>>>Occasionally , irrespective of whether I'm on windoze or linux, the hdd
>>>makes a sickening "click" sound, shuts down (I can hear it) and spins up
>>>again. My entire compu freezes & I have to hard-reset.
>>>
>>> I checked the cable connections & they seem pretty tight, so I'm rather
>>>confused as to what's up. Is the termination bad? IS the HD overheating
>>>(it's typically at around 50 deg celcuis, & the operating limit is 54
>>>deg, I'm getting an extra case fan that should cool it down further)? Is
>>>there something wrong with the controller? Is the hard drive itself
>>>busted (no badblocks or anything like that, and I ran Seagate's
>>>diagnostics on the HD and there were no errors).
>>>
>>> Where should I start in trying to diagnose the problem? DO I require
>>>special hardware?
>>>
>>> Bear in mind that there are no syslog error messages in linux as syslog
>>>can't write to the HD when it shuts down, so...
>>>
>>>
>>> I would appreciate ANY advice offered on this matter.
>>>
>>>Regards,
>>>AR
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>
>