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Crack Fix for Pesky Oven Bulb

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Zippy
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Re: Back to basics
Zippy   7/25/2012 2:23:26 PM
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From reading this site and others, consumer appliances seem to be rife with repair and maintanence problems.  There seems to be very little awareness of this among consumers (I know I don't ask about it when shopping for an appliance, and I should know better). Without market pressure, I doubt the manufacturers will spend any effort on it.

vandamme
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Silver
Re: Drat the lock washer
vandamme   7/25/2012 2:23:41 PM
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Yet another article where a picture would be worth 10E3 words.

Thinking_J
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solution : depends on perspective
Thinking_J   7/25/2012 2:50:59 PM
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one possible explanation....(?)

Bulbs were coming loose during shipment.. and the persons (engineer?  committee?) responsible for resolving the problem decided to put a locking mechanism.. totally ignoring the customer frustration that would be caused long after the product was purchased and installed... likely because it wasn't going to be "their" problem.

What may have started as an engineering problem (poor design), became a very different kind of problem.

This is a problem of providing the people responsible with appropriate incentives and possibly resources to resolve the original problem completely and correctly.
Likely related to same poor management of the original engineering.

Just saying it isn't all related to some engineer's bad choices.

I have often been in meetings (20+ people/ 4 countries) where the engineer's obvious (best) choice for resolving a problem on a product, is often discounted or ignored by management... only to be resolved a year or so later with another poor fix.

There is a reason why so many relate to "Dilbert" cartoons.

 

ricardo
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Corollary to Murphy's Law
ricardo   7/25/2012 5:28:28 PM
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There is an important corollary to Murphy's Law, an immutable Law of Nature that sits with Newton & Einstein's questions to Life, the Universe & Everything.

"If something is made easy to repair, it will never need repairing."

This was pointed out to me by Peter Walker of QUAD who made some of the most reliable gear in my industry, domestic electronics.  And he meant repair at the troubleshoot & component level rather than naive swapping of modules.

My own experience has confirmed this, even in other fields.

I have no explanation other than a designer thinking about repair is also thinking about failure modes and will probably address both.

So endeth the first lesson .. on using Murphy to our advantage.

Rob Spiegel
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Blogger
Re: Drat the lock washer
Rob Spiegel   7/25/2012 6:33:18 PM
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Hall of Fame (or shame) for sure on this, Chuck. Once the design mistake is made, I can see how it might be hard to detect. When testing the product, I can understand that removing and replacing the blub  would never come up.  Then, once the product is out in the market, it could be a couple years (or more) before anyone needs to replace the bulb.

Charles Murray
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Blogger
Re: Drat the lock washer
Charles Murray   7/25/2012 7:28:21 PM
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I, too, can see how this might not come up during test, Rob. I would just hope that the manufacturer would take the inevitable complaints to heart and never make that same mistake on future products.

William K.
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Platinum
crack fix for pesky oven bulb?
William K.   7/25/2012 9:33:40 PM
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Is it possible that there is some means to release the latch-locking tab? I have come across some surplus items that have locking collars with rachet teeth splined to the connector body, and a mating rachet splined to the other side. So they can go on finger tight but need about 90 foot-pounds to unscrew, with much destruction resulting. OR, insert a release pin to disengage the ratchet and it unscres easily. It probably added $25 to the cost of each half, but evidently the intended mission was quite important.

Tool_maker
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Platinum
Re: solution : depends on perspective
Tool_maker   7/26/2012 10:44:38 AM
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  I have to admit a prejudice in this, because I came to engineering through the back door, ie. the shop, but this is a classic case of an engineer or team of engineers who have never had to build or work with what they design.

  The Dilbert comparison is dead on.

Rob Spiegel
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Blogger
Re: Drat the lock washer
Rob Spiegel   7/26/2012 11:18:07 AM
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I take it "smeg" is a relatively nasty expletive if it's fitting for replacing this particular bulb.

agriego
User Rank
Gold
Re: Drat the lock washer
agriego   7/26/2012 11:33:25 AM
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Yes, it is. As a matter of fact, the blooper reels for the program are called "Smeg-Ups", as opposed to "F***-Ups". I saw the name of the appliance and immediately thought of Red Dwarf, and the expletive they use.

I haven't had to replave the light in my range yet, and after reading this thread, I am dreading it. It's amazing how little thought is put into making something easier to service. My son had to remove the entire headlight assembly and loosen the grill to replace the headlight bulb.

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