Interesting point Inge I am taking it that the MTBF is calculated? I wonder
what they used for the solder joint model - probably nothing? Just the same
old numbers from the component tables they have been using for the last 30
years?
John Burke
(408) 515 4992
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
Sent: Monday, May 28, 2007 11:40 PM
To: [log in to unmask]
Subject: Re: [TN] RoHS compliant laptop with early failure
Joe,
you used to be a balanced man. What do you think of the MTBF of respective
laptops? There are millions sold. If LF and SJ were problems, I'm sure you'd
find that in some of the many magazines that test and have all sorts of
opinions about computers. In fact, I have not seen any such flags. As far as
I have heard about CDs, most frequent causes for not running are software
issues.
MTBF for desktops is described by Seagate:
http://www.digit-life.com/articles/storagereliability/
and Toshiba presents MTBF for their laptop CD drives as 60,000 POH. That
ain't bad, is it? And it's LEADFREE!
http://www.baber.com/drives/laptop_cdrom/dvd/toshiba_sdr2212_specs.htm
Inge
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joe Fjelstad
Sent: den 29 maj 2007 01:39
To: [log in to unmask]
Subject: Re: [TN] RoHS compliant laptop with early failure
Thanks for sharing your thoughts Dave
As I noted in my opening words, I will most likely never know what the cause
was. My data poimnt count is only one but is was not a good experience and I
would not characterize my comments as "hysterical". We can go there should
the data points mount but I don't think it will be necessary until then...
;-)
I did get a full refund and an appology, so there is something to take
pleasure in.
Kind regards,
Joe
-----Original Message-----
From: David Hudson <[log in to unmask]>
To: [log in to unmask]
Sent: Tue, 29 May 2007 1:02 am
Subject: Re: [TN] RoHS compliant laptop with early failure
I would suggest that it belies your undoubted professional expertise to make
the assumption that this failure has anything to do with RoHS-compliance or
lead-free. Frankly, it smacks of hysteria. Surely you can think of at least
a dozen other potential failure modes, all equally likely? Let's see some
evidence in this case before you throw your toys out of the playpen.
Dave
-- ++++++++++++++++++++
David Hudson
On 26/05/07, Joe Fjelstad <[log in to unmask]> wrote:
>
> Greetings folks,
>
> I don't know, (nor will I likely ever know) what the problem is but my
> brand new RoHS compliant laptop has the distinction of being the
> shortest lived one I ever owned.
>
> It is a trusted brand name supplier from Japan and I have always been
> pleased with their bullet proof reliability. My earlier version is
> still working very well, just a little slow. The new one was a
> high-end small, lightweight model that touted reliability in ads. On
> this one, however, 4 weeks after purchase and with very little use,
> the CD just stopped working for no apparent reason.
>
> I would really be curious to know what went wrong but I am going to be
> returning it to the store and will now be looking for something
> cheaper and hopefully non RoHS compliant. I cannot afford to pay big
> bucks for unreliable products.
>
> (I almost wonder if someone out there is getting back at me for
> protesting lead-free too much.. ;-)
>
> Wishing better luck to the rest of you. Joe
>
>
>
> ************************************** See what's free at
> http://www.aol.com.
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0 To
> unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt
> or (re-start) delivery of Technet send e-mail to
> [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing
> per day of all the posts: send e-mail to
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at:
> http://listserv.ipc.org/archives Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16for additional
> information, or contact Keach Sasamori at [log in to unmask] or
> 847-615-7100 ext.2815
> -----------------------------------------------------
>
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0 To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet
NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send
e-mail to [log in to unmask]: SET Technet Digest Search the archives of
previous posts at: http://listserv.ipc.org/archives Please visit IPC web
site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
________________________________________________________________________
AOL now offers free email to everyone. Find out more about what's free from
AOL at AOL.com.
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0 To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet
NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send
e-mail to [log in to unmask]: SET Technet Digest Search the archives of
previous posts at: http://listserv.ipc.org/archives Please visit IPC web
site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
