Greetings yoreparo colleagues, I have this microwave oven with the following fault, the device turns on and the display is seen, responds to the keyboard but when trying to heat something you hear as if the transformer was working forced and after 3 or 5 seconds burns the input fuse. Uncover the equipment and check the high-voltage diode, test it with a 30-volt source and it works well, remove the capacitor (0.90 microfarads for 2100 volts) and measure them with the capacitor and measure the marked value, measured between terminals of the magnetron and measures a small resistance and each one with respect to mass measures me open so I assume that it is also good, if I disconnect one of the wires of the primary coil of the transformer the device works without noise and without burning the fuse but Of course without heating. This is where I turn to you my suspicion is oriented towards the transformer, I know that the transformer consists of 3 coils, one of 110 volts, another that comes out of the middle part of the secondary of fine wire and the one that is connected to the capacitor and the magnetron but I don't know how to test them or how many ohms these coils should measure in a good-functioning transfomer. If any colleague can help me welcome all your suggestions. microwave-bio-plus-de -samsung-D_NQ_NP_776864-MLV27067725292_032018-F.jpg [67.16kb]

the primary must give you 2 to 3 ohms the secondary between the secondary connector plus the base of the transformer you have to scrape a little to remove the metal varnish there it must give you above 100 ohm and the wires that go to the magnetron must give you 06 omios