Jump to content
John Lewis give 2 year guarantee on white goods appliances

 

No juice to Drain pump on Samsung WD8704RJA


StirlingSteve

Recommended Posts

  • Members

Hi there, long time browser, first time poster here.

My trusty Samsung WD8740RJA finally developed a fault yesterday (error code 5E, drain problem) and being a bit of an amateur fiddler I thought I'd have a go at diagnosing the problem before calling in the professionals. I went through the very helpful default troubleshooting guide on here but still need some help. This is what I've done so far:

The drain pump isn't activating at all but I checked the drain hose and filter were clear first anyway, no probs there. I then took the drain pump housing out and verified there were no blockages there either, the impeller on the motor is spinning freely.

Next, I checked the motor itself. No visible signs of wear, no burn marks or nasty smells or anything and a resistance test gave a solid 171 ohms so I think that means the motor is fine. I then turned my attention to the power supply to the motor and there I think I saw the problem. A meter on the terminals show 37v at machine power-up but this only rises to a maximum of 88v when a drain cycle is run, dropping to 64v after a few moments. This remains constant until the cycle is cancelled and it drops back to 37v. As far as I can tell, it's a 240v motor so I'm assuming the supply is the problem here.

I'm a bit lost beyond this point, I'm not sure what component supplies the power so am not sure if this is easily fixed or if we're talking an expensive part needed. If so, this is a 4-5 year old machine (from memory) so am assuming it might be better to replace rather than repair. 

Can anyone suggest what this might be and how much it might cost to repair?

Cheers muchly in advance!

Link to comment
Share on other sites

  • Root Admin

Hi. When you say "motor" I'm assuming you mean the pump? I'm confused because you say pump at first but then motor. If the pump is only receiving a very reduced power you'd need to trace the live supply back to the pcb to make sure there isn't a connection fault or even partially severed wire but after that there's not much you can do except get an engineer in.

Need a repair or spare parts? 

Book a Repair | Buy Spares (Cheapest prices guaranteed)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Link to comment
Share on other sites

  • Members

Yes, sorry - when I said motor I did mean the pump :)

Right, so there'll be some sort of PCB that controls the 240v supply to the pump so if it's not the cable then I assume it'll probably be an expensive engineer job, in which case I think I'm better off buying a new machine - this one's about 6 years old anyway so probably not worth throwing hundreds at.

Cheers for the advice!

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Appliance Repairs

Book washing machine & appliance repairs

Book Repair Now

Buy Your Spare Parts

Ransom Spares is a family company with over 1 million white goods appliance spare parts for sale. Next day delivery available, friendly company with over 5000 reviews on Trust Pilot

Price match promise: "If you find the exact same part or accessory elsewhere for cheaper, we’ll not only match it, we’ll beat it!" -

Buy your appliance spare part




  • Popular Contributors

    1. 1
      Sleekmeek
      Sleekmeek
      1
    2. 2
      Whitegoodshelp (Andy)
      Whitegoodshelp (Andy)
      1
  • Forum Statistics

    • Total Topics
      3.1k
    • Total Posts
      13.1k
×
×
  • Create New...