Re: Microwave oven with burnt Paraller resistors at PCB
good job!
good job!
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This poor microwave oven was purchased by my former employer in 2019 (it's a 7/2018 build) and lasted for about 3 months before making a terrible noise when in use. I determined that it was the main transformer and contacted Toshiba. They asked for a picture of the cord cut in half and the serial number, and then credited my boss' credit card. Rather than sending it to the e-waste, I bought a transformer on eBay and thought I'd try flipping it. Discovered that used microwave ovens aren't worth much but in for a penny, in for a pound as they say. It sat in my basement getting kicked and shoved... -
One day my microwave oven stopped heating.
It would turn on and rotate the plate but no heat.
I removed the cover and checked components with digital multimeter.
Found that the high voltage fuse was blown.
This is not the AC fuse, if the AC fuse was blown then the oven would appear totally dead.
Then I tried to find replacement fuse on local electronic parts stores and this specific value was not available so I got the closest I could find.
I replaced fuse and tried to heat up a glass of water.
Strange noise... -
I heard somebody suggested a way of repair faulty led light bulb which I have never heard of. The way is to put the led light bulb inside a microwave oven and turn on the microwave oven for a few seconds. He said that faulty led light bulb is usually caused by poor solder joint between the led and the pcb. Putting the bulb inside the microwave oven for a few seconds will heat and reflow the solder joint making it works again.
Is that possible? I do not want to try this unless I have a spare microwave oven.
(I do not mean to suggest somebody to try this. It may be... -
Hey everyone,
I'm currently working on a mid-70s Sharp Electronic Digital Clock Radio, Model FY-70CH. I found the service manual online, printed it out, and have been studying it for a while. My main reasons for tackling this are: (1) I want to learn electronics and figured I'd start with something I had on hand, and (2) I want to fix its issues. Right now, the radio sounds awful, has about 5V DC at the speaker terminals, and the alarm time setting doesn't work. But I'm not asking how to fix these problems.
Instead, here's what's been bugging me so far:
The schematic... -
Hi guys, how's it going?I hope you're all doing well. So a friend of mine told me that his little oven just dead, no noise like spark or something no blown up, anything just dead. I opened it and on the board control I found capacitor dead (you can see the dirty on the pcb , resistor broken and the rest of capacitor are low value. I
just wanted to understand if existing the scheme for this controller board. Thank you do much for the answer
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