I have an indesit DFGL 17B19. It’s been fine but a couple of days ago developed a really odd fault. When you close it after it’s been stacked and press the power button nothing happens, no light or anything like it’s got no power. I checked the fuse etc all fine. Suddenly after about 5 mins it beeps and power is there, and it started a cycle as normal when the start button is pressed. It’s done this now on a few occasions. Any ideas as to the cause??. Intermittent power button issue???. Door seems to latch closed as it’s always done and has a good click to it.