The unit can appear to operate properly for some time after its electrolytic capacitors have started leaking, until it doesn’t. When it doesn’t operate properly, there is a high likelihood that other parts that are more difficult to source and more expensive have failed due to the failing electrolytics. It is very inexpensive to replace the electrolytic capacitors a priori. I’ve done it for two different samples of the mk2, myself. For some reason Chakster always disagrees with me on this issue. But you have my own opinion based on experience, and you have his based on his experience. Take your pick.