Had an issue with this window since i bought the car in may, sometimes after pressing the switch there would be a delay before the window went down, sometimes it wouldnt go down without pressing switch a couple of times. Sods law whilst away on holiday last week, it just stopped working. The switch clicks still as if the window is going down but isn't. Have googled this and by all accounts changing the regulator isn't for the feint hearted. Given the switch unit is a circuit board , is there