Introduction: a multifunctional mini-magnetic furnace, such as a fire pan, fried, soup and cooking, is one of the necessary cookers for every family. The functional breakdown, digital displays and simple operation of the mini-magnetic furnaces have made them popular in the kitchen appliances market. But when you're using the mini-magnetic furnace, there's gonna be some trouble. Here, rabbit will list the six major electromagnetic furnace failures and the solutions to them, so that they can be easily resolved。
One, blast-burn insurance and igbt。
This is reflected in the failure of electricity to react and the non-working of the whole machine. We unplugged the machine, and we found out that the insurance burned, and it exploded so badly that it was all black on the glass wall. Further examination will show that the igbt under that big radiator has also broken through, and sometimes even a whole stream bridge has been burned, but the whole bridge is much stronger than igbt and normally only igbt。
In this case, we should not rush to replace the spare parts test machine. We need to find out if there are any other bad things. In this case, i measured all the major resistance broadly in the circuits, and the two triodes (8050 8550) driving igbt also measured to see if there were drums for 300v filtering and 0. 33uf resonating. If that's all right, replace all the bad parts except igbt. At this point, it is normal to test b-ovs for +5v, +15v or +18v, igbt. Only when these voltages are normal can igbt be installed. This will eliminate most of the blast failure。
Second, the whole machine was unresponsive, but there was no explosion, the test machine, the whole machine was not working, the electromagnetic furnace was removed and the fuse was found to be intact。
This is usually the case when the electric transformer chip of the electromagnetic furnace is burned, which generally generates 18v voltage, then becomes +5v voltage by 7805 for cpu work, without +5v, with cpu not working, of course, the whole machine is not working. In electromagnetic furnaces, such chips are generally used as viper12a, viper22a, thx203h etc. The power transformer chip is measured on the outer edge of the chip to see if there is a small device with collateral damage, and if so, replace it。
Three, open, but displays a malfunction code。
Such failures require a clear understanding of the meaning of the code before purposeful maintenance. There's a lot of code down the electromagnetic furnace on the internet, and we can use it. Such malfunctions are typically electrically resistant transformations of high-probability bodies, which can be measured in one place and replaced by variables. At the same time, we need to check the single level of the intersensor, 300v/5uf capacitor, heat-sensitive electrical resistance and electromagnetic furnaces. As long as these locations are identified, such failures can generally be eliminated. The few may also have been caused by damage caused by lm339 and may be verified by proxy。
Four, it's dysfunctional. Some buttons don't work。
This type of failure is best fixed, usually when the key is broken or when the keyboard is dirty, or when the key is pressed or the keyboard is cleaned。
Five, cpu bad。
Such failures are generally not repairable and it is best not to waste time, as such cpus are difficult to reach。
Six, no heat or intermittent heating。
These malfunctions are difficult to repair, temperature detection of electrical resistance, simultaneous oscillation circuits, igbt-driven, igbt c-high voltage protection circuits, current detection circuits, pwm-modified circuits, and cpu circuits may all be associated with such failure. Fixing such failures is a test of our patience。
When we are still unable to find out about the malfunctions or how to resolve them, we should demand help from the sales point of the mini-prime electromagnetic furnace in order to guarantee their safe use. When using an electromagnetic furnace, we need to be careful about the frequency, method and description of the use, overuse or incorrect use, which has an impact on its useful life. We need to be more reassured by the correct use of the little bucket's electromagnetic furnace and the six solutions that the little rabbit shares。
