[TechAssist] Re: MTBF/MTTR Consumer Electronics
- From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 12 Feb 2003 08:35:09 -0600
I have been reading the various posts, concerning quality, etc.
I want to address TVs only for a minute.
The cost of items 20 years ago was much greater than it is now, in real term
pricing. As electronics became smaller, cheaper, there were more. Many
more. How many people in, say, 1975, had multiple TVs in their house? Ok,
I'm a little strange but we had 1. Today I have one in each bedroom, one in
the living room, one in the kitchen. My guess is that if, arbitrarily,
there is a 2% failure rate, there will be many more units that need
repairing today versus 25 years ago, because there are sooo many more.
Look at the decline in the number of servicers. Nationwide a 10% a year
attrition. Here in Pensacola we have had 15% for the last three years. If
the numbers of TVs has increased and the numbers of servicers has decreased
then the only conclusions are, 1. That the reliability of the units, that
is the failure rate, has decreased, or 2. That a lot of stuff gets tossed,
much more than in the past.
My opinion is that the reliability has reached a point such that by the time
the typical unit fails it is old enough to warranty replacement.
As far as public information about failures, this is in the realm of
Industrial secrets. Any designer makes trade-offs. (Life-cycle
expectations for capacitors are readily available.) If one manufactacturer
tells everyone, "Our acceptable failure rate is 2%" this will get twisted
around and used against them. But at some point the manufacturer will
decide what they think is acceptable.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
850-456-5995 voice
850-458-6369 fax
----- Original Message -----
From: "David Lessard" <mrfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, February 11, 2003 4:31 PM
Subject: [TechAssist] MTBF/MTTR Consumer Electronics
>
> This is a little off topic. Do any members know of information pertaining
to
> mean time between failure (MTBF) or mean time to repair (MTTR) for modern
> consumer electronic products. I realize some manufacturers make better,
> longer lasting products. What I'm looking for an average, if one exists.
> I've searched online to no avail. TIA.
>
> David Lessard
> 50 Harrison Street
> Alexandria Electronics
> Ontario, Canada
> K0C-1A0
> mailto:mrfixit@xxxxxxxxxxx
>
>
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