Our LG washing machine does this once every year and a half almost like clockwork. It will simply refuse to do anything until it is unplugged and then plugged back in.
It may be clockwork. If its power hasn’t been interrupted in the interim, i.e. you have very stable power at your house, that’s got to be some kind of overflow bug in its software. A timer somewhere is running out of room to count clock ticks and it barfs.
I’ve an oven which when turned off in hot state while in convection mode will turn on the fans for few minutes next time I turn it on, regardless of mode and temperature. To overcome this bug I need to put mains power off for couple of minutes and let the caps keeping the ram alive drain. Not only it has hot state reset bug but also a ram initialization issue as well it seems. Thankfully that state is not stored in nvram.
The manufacturer was as expected: ‘we’re not software guy, we can send an ‘expert’ engineer (who knows only to replace parts, no debugging) and it’ll cost $$’. I thought I’ll reverse it and fixing someday, till then I’ll live with it.
I think it’s integrated ram inside the microcontroller. It stores states and programming (time, temperature etc) + the working memory for the program running on cpu. Surely some registers can do that but who cares.
No reason, few decades ago oven used to work just as well as they do today with knobs, thermostats and spring timers.
That’s why I said good question.
The oven I mentioned isn’t this smart but there exist ovens like
COOKING MADE SMARTER WITH WIFI POWERED BY SMART HQ: Voice-enabled cooking allows you to turn microwave on and off, add time or change power level via Alexa or Google Assistant; Scan-To-Cook Technology saves time and optimizes frozen food preparation
And yet I still have electronics to this day that require me to pull the plug to get going again 😂
Our LG washing machine does this once every year and a half almost like clockwork. It will simply refuse to do anything until it is unplugged and then plugged back in.
It may be clockwork. If its power hasn’t been interrupted in the interim, i.e. you have very stable power at your house, that’s got to be some kind of overflow bug in its software. A timer somewhere is running out of room to count clock ticks and it barfs.
heh 🫧
I’ve an oven which when turned off in hot state while in convection mode will turn on the fans for few minutes next time I turn it on, regardless of mode and temperature. To overcome this bug I need to put mains power off for couple of minutes and let the caps keeping the ram alive drain. Not only it has hot state reset bug but also a ram initialization issue as well it seems. Thankfully that state is not stored in nvram.
The manufacturer was as expected: ‘we’re not software guy, we can send an ‘expert’ engineer (who knows only to replace parts, no debugging) and it’ll cost $$’. I thought I’ll reverse it and fixing someday, till then I’ll live with it.
Why should an oven have RAM?
good question :)
I think it’s integrated ram inside the microcontroller. It stores states and programming (time, temperature etc) + the working memory for the program running on cpu. Surely some registers can do that but who cares.
My meaning is why should an oven have any electronics?
No reason, few decades ago oven used to work just as well as they do today with knobs, thermostats and spring timers.
That’s why I said good question.
The oven I mentioned isn’t this smart but there exist ovens like
That’s actually why. You have to drain the power from the circuits.