Hi Ariel, what is damaged is the only valve that these compressors bring, which is located by covering the discharge orifice of the compressor pump itself, also and the most common is that the spring that keeps pressing the key or dike is broken zone divider or this dam or key is stuck that divides the high pressure or discharge zone of said pump and the suction or suction zone of the same, leaving the pump of the compressor itself bypass between both zones. When the key or dike is stuck or stuck, because the compressor has been out of operation for a long period or has some mechanical wear, it may be with a hammer master stroke at discretion, at one of the round points of electric welding, of which fix from the outside, the position of the inner pump, outside the compressor's own housing, can this key, leave the bad position, where it has been locked with a repeated, solid and lucky stroke at the same time to stick again to the eccentric, said dike, and to be able to continue dividing the two suction and discharge zones, so that you could recover the compressor at that time, but when the spring is pushed that pushes the key or dike against the rotating eccentric sweeping the two zones or split the flipper or discharge valve of the pump of the compressor itself, then there are no remedies. In the image, I indicate in red ovals the most common parts of the mechanism, which are usually damaged or fail when a rotary compressor stops compressing. In addition, when the compressors are not working for a long time, the filter maya that these compressors carry in the liquid trap through the suction inlet, it can be covered by dirt or dirt mixed with the oil, forming a barrier that prevents proper aspiration. of the bomb. In this case the only solution is to pierce the maya with a punch or stiletto to recover the compressor, although this method is not well seen would be at the same time the least invasive to achieve it. Luck. S @ lu2 friovega63.