Samsung washer+dryer

[Marko]

Hello everybody, first of all i want to say thanks to some of people from this site for helping me to repair my Beko washer dryer machine which had problem with an d7 diode(1n4002). Anyways i’m not here because of that only. I have also another Samsung washer dryer model WD8EK5400OW/EG which has no power on display at all. What happens is when i give 230v on the main board and press power button, i can only hear a relay opening and thats all. After an additional time when i press power button again relay opens and that’s all. When i opened the main board i checked fuse and other components everything seems do be working good. Also on main board there are 2 led diodes which are also blinking and what that means is the pcb is not dead. I’m sending the picture of what it looks like.

[Whitegoodshelp (Andy)]

Hi Marko. Unfortunately domestic appliance engineers are not trained in PCB repairs. They have always been taught to just replace the whole board. Of course knowing that the PCB is actually faulty is a different matter and it is always been done with process of elimination in the absence of being able to test any of the parts.

This of course is extremely wasteful, and in my honest opinion I think it is one of the many things that definitely has to stop if they are serious about making white goods appliances last considerably longer.

It suits manufacturers because they sell a lot more boards, and there is very little money to be made in selling diodes and resistors. However, to be fair I doubt very much if that is the reason why this has always been the case. When I first started repairing them in 1976 the only printed circuit boards were small modules about the size of a postcard to control the speed of the motor. Everything else was controlled with mechanical timers.

Having said that, I believe the man who has helped a lot of people with the diode problem that you mentioned (Bob) is the only person that posts here who has proper technical knowledge about the insides of PCBs although they may be some others around. To be honest I doubt that he regularly looks at new posts so you may need to put a link to this new topic at the end of the relevant topic that he follows because he has contributed a lot to it.