microwave control circuit electrolux EH / 20D
Colleague Oswaldo thanks for your prompt response, do you know if there is any way to test the talking electric piezo? To avoid welding in vain, I am placing a 9-volt battery in the terminals and only a very soft noise is heard, nothing like a beep and when I connect the device I can hear a very slight beep only if I remove the microwave plate, Could it be that the life of the cicada was exhausted or could there be a failure in some tension? Do you know what tension the cicada feeds on?
Hello, you can try the piezo with an analog multimeter in Rx1, it will give you a very high and almost infinite measurement, but you will hear a faint click. If you do not hear anything at all then it is bad, remember that it reproduces very high-pitched sounds and likewise it must have its plastic cabinet so that it amplifies to the maximum.
thanks oswaldo, finally review the welding of the transformer since he repeated the original fault that was not lighting, I found that the track of a leg of the primary was broken by what made false contact, I corrected it by placing a cable and that was solved. Then I changed the electric piezo and it was also solved. Now what I find is that there must be some false contact in the high voltage part of the traffic because sometimes it does not turn on and therefore does not heat up, I will continue to make tests to look for that false contact. As for the other fault, it is already solved.
Hello, good that you solved the previous fault, the extra fault you must say that it has exactly, it may be that it does not obey the Star key or that the descent clock works but no voltage reaches the transformer, etc. you can suddenly close this question and open another with the new fault giving exact details to help you.
oswaldo thank you very much, the last thing was not a fault, I was misusing the controls, which was solved the problem. in conclusion the solution was to review the welds so I will put as the best answer
Reparaciones similares solucionadas
¡Aprende a reparar con estos cursos YoReparo!
Curso Refrigeración Comercial Aplicado a Diagnóstico y Reparación
