Had the same problem with a dehumidifier, would lock up during thunder storms. Some well place decoupling caps , on the Zilog part they used, solved the problem.
This is exactly why I asked the appliance shop guy for a dishwasher with real "ka-clonk" buttons and no electronics behind them. "What, you really want ..." ... "Yes."
I had to reboot our DTV converter boxes at times. When you see register settings in hex show up on the screen it's that time again.
Be glad you didn't buy LG dishwasher. I have had to reboot mine and as well, immediately under warranty LG replaced the controller board (which I kept as spare as it wasn't the problem), the level switches, the vent assembly, the heater (poor appliance repairman switched on power with water off), the pump motor, should I go on?. It works now but still condenses a ton of water onto the floor during the drying cycle.
All of this energy efficient design is not what it is cracked up to be when comparing to 25 year old GE technology that actually worked up until the day the wife decided "it was old and clunky".
I used to make a decent living fixing micro-controller designs that other folks screwed up. Principally vending machines used in industrial environments with little or no decoupling and interrupt routines that vectored off into hyperspace if 'impossible' conditions occurred.
Shhht! Don't spill the beans. I still make (part of) my living doing that.
The topper was a pellet stove with the proof-of-flame sensor in the wrong place so the 8051 on there wouldn't even get the info in time. And here I am, a guy with an EE degree, who has to find that out ...
I won a court case demonstrating that a proof-of-flame sensor could fail due to asynchronous line noise spikes... and fill a Chicago school house up with natural gas (fortunately on a weekend ;-) ...Jim Thompson
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| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
Electronics design failures aren't all that OT for an electronics design group. It certainly beats Windows problems in the T-o-meter (or bitching about OT Ts).
OTOH I have a LG front loading washer that is the absolute bee's knees. Our water is obscenely expensive, and the LG is very very careful to minimize water use--besides doing an excellent job and being much gentler on clothes, the thing paid for itself in less than 18 months just in water savings. And it's never needed rebooting.
It can be worse. Friends have a dual oven with the controller above and obviously not very heat-tolerant. After they had the third controller die they gave up on the thing. It gets too expensive and the stuff seems to be junk electronics anyhow.
While we are at it, SWMBO just told me a couple minutes ago that the pellet stove kept quitting after the first auger turn. And we have a guest flying in tonight. Pulled plug, one-mississippi, two-mississippi, plugged it back in, hit start -> works. It has a 8051 in there which is great. But obviously the guys programming it were not :-(
When do programmers learn how to handle a watchdog _properly_? Hurumph.
It's within spec. After we got it and I found a wrongly designed sensor location I checked the whole thing out. Got the Winbond datasheet and had at it. All kosher. The HW guys seemed to have done a somewhat decent job. However, it has some weirdly programmed loops in there. So it's all not very surprising.
I've seen sources of firmware where one of the first lines after the .include statements was to turn off the WDT. Gave me the goose bumps.
Dog-gone it, does that mean that if I get into homeownership, I want gas ranges made the way they used to make them and now largely no longer do?
Do modern basic gas ranges have digital controls, while all that I ever used had either electronics only for piezo ignitors or no electronics at all outside maybe a digital clock?
I think that complicating a simple thing that worked with digital controls is stepping backwards!!!
The gas ranges I know and knew had mechanical controls, and no active actual regulation other than the by-mechanical-process-only gas pressure regulator near the gas meter.
Probably so. The electronics will usually break in a few years. All-mechanical ovens can last 100 years.
Yes. Google gas range and see. The high-end stuff, Wolf and Viking, have little or no electronics, usually just ignitors. The threshold for a decent non-electronic gas range is around $2K last time I looked. We wound up with an NXR, assembled in California from Chinese sheet metal and German burners.
I suppose electronics is cheap, or the average customer is impressed by buttons and LCDs in their stove.
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