That Panasonic microwave oven (model NN-ST557W) doesn't even output anywhere near its rated power – allegedly 1.1kW, but the current draw is given as 4.5A (@ 240V = 1080W), implying an efficiency of 102%
. And this is supposedly according to IEC 60705
.
It doesn't contain Panasonic (or any Japanese brand) electrolytic capacitors, either; those I saw, at least, are from Jamicon.
Last Friday I got an LG MS3042X1 (also rated for 1.1kW out to IEC 60705, but with a more reasonable 1.5kW input – giving a 73% efficiency, still on the high side but at least within the realm of possibility) to replace it with, which works
way better (although I can't predict how long it will last, but the price at least seemed fair). This one uses a conventional heavyweight transformer for the HV supply (albeit with a small SMPS for the electronics), although it does have this "i-wave" thing which ought to do
something for the microwave distribution. It also has a proper LED display.
Information is far more fragile than the HDDs it's stored on. Being an afterthought is no excuse for a bad product.
My PC: Core i3 4130 on GA‑H87M‑D3H with GT640 OC 2GiB and 2 * 8GiB Kingston HyperX 1600MHz, Kingston SA400S37120G and WD3003FZEX‑00Z4SA0, Pioneer BDR‑209DBKS and Optiarc AD‑7200S, Seasonic G‑360, Chenbro PC31031, Linux Mint Cinnamon 20.3.