BEKO WDX8543130W no lights on

[bob12241]

6 minutes ago, Whitegoodshelp (Andy) said:

Aye and not holding the metal shaft 🤭

 

Absolutely 🤣

[andyr12345]

yeah i remember discharging with a screwdriver too . them days there were no sensitive electronics though, shorting capacitors that way these days with microchips in the circuit could possibly blow up the silicon chips or other sensitive components on the board though

[ajsaxon]

Hi Everyone,

Just registered here, lots of great information so thanks for that.

I have a question and was wondering if someone could offer some advice? I have a wdx8543130w washing machine that completly died. I replaced The D7 Diode with a Schottky 100v 2a replacement (STPS2H100).

The machine worked again without issue after replacing this for about 12 hours and 1 full wash but I just had a message from my wife saying it's dead again and won't power at all, so the same issue as before.

I could potentially just replace that part again but since I don't want to be doing this daily, is there a possible cause for these failures that I could fix? Maybe another faulty component somewhere causing this diode to fail?

Any advice would be really appreciated.

Thanks,
Alex

[MelS]

On 13/09/2023 at 16:28, ajsaxon said:

Hi Everyone,

Just registered here, lots of great information so thanks for that.

I have a question and was wondering if someone could offer some advice? I have a wdx8543130w washing machine that completly died. I replaced The D7 Diode with a Schottky 100v 2a replacement (STPS2H100).

The machine worked again without issue after replacing this for about 12 hours and 1 full wash but I just had a message from my wife saying it's dead again and won't power at all, so the same issue as before.

I could potentially just replace that part again but since I don't want to be doing this daily, is there a possible cause for these failures that I could fix? Maybe another faulty component somewhere causing this diode to fail?

Any advice would be really appreciated.

Thanks,
Alex

Switch mode power supplies can be tricky to fix, one failed component could kill another, and if you suspect that the transformer is faulty you probably won't be able to source a replacement. Also, the large capacitors can still retain a charge for some time after the device is unplugged, the ones on the 240v side will charge up to in excess of 300 volts, so allow plenty of time for the capacitors to discharge before touching the board.

Only thing I can suggest is to inspect your soldering on the new diode to make sure you don't have a dry joint, and if you have a meter, test the new diode in circuit to confirm if it is the same fault. I would also suggest inspecting the board to see if any of the electrolytic capacitors have a bulging top, or bottom, or have leaked electrolyte (sure signs of failure), and also look for discoloured and scorched components. 

You'd then need to start testing the individual components you can with a meter to see if they are in spec, and removing those that can't be tested in circuit.

My electronics knowledge is negligible at best, so I've no idea what would cause that diode to fail repeatedly, might be a good question to ask on an electronic forum. At a wild guess, possibly it could have been caused by excessively high reverse voltage spikes from the transformer, but even if it was, I've no idea what would cause it to suddenly start doing that.

One of the more common components to fail in SMPS are the electrolytic capacitors, and they all slowly lose capacitance over time due to evaporating electrolyte (cheap brands are worse), but I doubt a failing cap would cause that diode to fail, I would expect failing capacitors to make the output voltages unstable and cause the washing machine controller to hang, or crash, or the smps control chip to shut down repeatedly.

 

Edited September 16, 2023 by MelS
typo

[MickeyBoy]

Another success with the replacement diode D7, this time on a Beko WDIX7523000 washer dryer. Hopefully the repair will last but a massive thanks to Bob12241 for his brilliant instructions anyway. The machine has had very little use but is, of course, out of warranty. Once again, a couple of quid spent instead of £79 for a new PCB. What a result!

[nicam49]

This is an absolutely invaluable thread that is still helping ppl 4 years on from the original post.... Full marks to the OP, Bob, and Mr Whitegoodshelp Andy for the forum. 👍👍👍

[tom13]

On 03/05/2021 at 12:10, SorinS said:

Hi to all,

Thanks to Bob I managed to find the same problem on my washer-dryer Beko ProSmartInverter WDR7543121S which was about 32 months old.

The problem occurred when my washer was disconnected from water supply  and my wife tried to start it... after that washer just didn't started again

Luckily I had a Multimeter with a diode testing function ( which I never used it) and the problem was easy to find.

I tested all diodes on the board D6 and D7 were faulty (D6 is 5A 100V). D6 showed faulty on the board but when I took it off it looked fine, anyway I ordered and replaced both, washer is working fine.

Such a shame these days nobody wants to repair anything, it is all about consuming and the parts have some crazy prices...

Thanks Bob!

 

Hello, I've got a similar issue: D7 looks healthy (.315v and OL in the opposite direction), but the D6 looks faulty (.000 readings in both directions). Is it correct to replace only the D6 please? What replacement would I need to order for D6?

So happy to find such valuable info here (found it through a youtube tutorial). My washer-dryer won't turn on BEKO WDIY854310F (2018 model)

 

The number I can see on the D6 is 93 510

 

Thank you for your help.

Edited November 21, 2024 by tom13

[tom13]

On 21/11/2024 at 12:41, tom13 said:

Hello, I've got a similar issue: D7 looks healthy (.315v and OL in the opposite direction), but the D6 looks faulty (.000 readings in both directions). Is it correct to replace only the D6 please? What replacement would I need to order for D6?

So happy to find such valuable info here (found it through a youtube tutorial). My washer-dryer won't turn on BEKO WDIY854310F (2018 model)

 

The number I can see on the D6 is 93 510

 

Thank you for your help.

After removing the D6 I got some advice from a kind ebay seller who told me I can replace it with the SR5100. Did that and the washing machine is back working as normal. Not easy when you don't have any knowledge about such things, but with great advise from this forum and some youtube videos I've managed to replace the diode. Happy for not having to replace the washing machine

[ads1980]

On 08/03/2019 at 13:29, bob12241 said:

Hi, probably too late now but our washing machine, same make and model did the exact same thing. I am a qualified electrician and spent some time working out the wiring as Beko won't give the diagrams to you. I found that the circuit board on the left hand side (when viewed from the rear) is the motor speed controller (inverter), this was ok as the fault was not related. The front PCB had no lights on, but if you looked carefully I occasionally noticed that the Blue selector switch Led's were lit but very dull. The circuit board at the rear RH side is the main power supply and distribution/controller board. I found I had 240v at the input to the board but couldn't find any voltages elsewhere. I took it out and did some tests, I found a diode had blown, after replacing this with an uprated diode everything was working. Total cost £2.05 with express delivery included. I have pics of the boards and location of the diode if required.

Regards Rob

 

Other models affected include WDW85140, WDIR7543101, and Blomberg BWD384W0

EDIT   Picture of mainboard attached. Diode that had blown was D7 located just above and to the left of the transformer in at least 2 cases. Board is located at the rear on the bottom right hand side when viewed from the rear. Diode rated at 100v 1A, changed for 100v 2A, I chose a STPS2h100 as its size was the same.

 

Hi @bob12241 I just wanted to say a massive thank you for this post. We have a Grundig washer drier that’s probably 5 years old. Last week, the front display panel just stopped working. There was still power getting to the machine as the door locked every time you pulled the plug out and plugged it back in. After doing a lot of google searches, I couldn’t find anything so started taking a few of the parts out to look at them thinking I couldn’t make the problem any worse (we were going to buy a new machine!) when I started looking at the internal parts, they were all BEKO parts. After not getting very far, I took out the PCB and googled the board name TERMA_MB_G08 BEKO and eventually came across this post. Hey presto, i ordered some D7 diodes (I could only get a minimum of 5 on next day delivery) and removed the old one from the board and soldered in one of the new ones and the machine has come back to life.

Our washing machine is a Grundig Washer Drier model number GWDI854

 

Thanks very much for this post 😊

 

[Aaron Gigatek]

On 08/03/2019 at 13:29, bob12241 said:

Hi Bob thank you so much saved a few pennnies and the wife is very happy