Zanussi Tumble Dryer Controller Repair Diagnostic

Our Zanussi ZDC37200 dryer died, this investigation, diagnostics and £1 fix

[How-to-repair]

Exceptionally well produced and also exceptionally well explained this comes from someone who fixes this type of dryer on a daily basis excellent work

[Hickoree]

Can't express how grateful I am for this. Just saved me £200 for a new dryer and the added bonus was it finally got me to buy a decent soldering station! Again, many thanks.

[robertsampson]

Just ordered the same components as my dryer has done exactly the same thing, my resistor was burnt also. Thanks for the info 👍👍

[sambonomo]

Thank you for this fascinating video. In my case however (and my PCB looks exactly like yours) the mains comes in via connector J5. The connector that goes into the dial switch comes from the door safety switch and seems to connect the Live only, not the neutral. Does this make sense?

[Toilet_Sniper]

Saved me at least £150 on a Zanussi tumble dryer board. The same common fault occured with dry solder joints on the black Omron relay. This was resoldered with lead solder and is working well. The relay is quite long and not glued to the PCB, with all the heat cycles it goes through I'm not surprised that the solder joints have fatigued and cracked, it's a poor design, common to AEG, Electrolux and Zanussi that use the same parts.
Getting the main circuit board out was more difficult though, had to take the top lid off, then the side panel, before I could remove the circuit board and cover.

[exaisle]

Thanks for that...great video...my tumble dryer failed...same problem...blown LNK304 and resistor. By the way, it's a 47r 3w resistor but your way of working that out was cool :-)

[eCitizen]

Thank you for the great tips all around.

[AndrewGaskinAndrewG]

Great videos and now subscribed! Do you happen to know the LNK device in a Zanussi ZWG1120M, as it's blown it's top! Thinking maybe a 305NP? TIA Andrew

[mymollyt]

Hi magic smoke, I watched the video, can you advise please where I can purchase both components to do the repair, thank you, Brian.

[neilanderton]

Hi, excellent video and useful explanations as to which component do what. I’m a washing machine engineer and a similar thing happens on Bosch dryers, where the switch mode and resistor blow. I’ve had lots of success replacing the components on Zanussi/Aeg machines, but on Bosch/Siemens, the machine works but only tends to do one or two cycles of drying before the components blow again. What could be causing this? I’ve heard maybe failing capacitors cause it but I’m not sure. Have you ever had experience with a Bosch board? Thanks in advance

[moatd]

Magic Smoke, can you please tell me the value of the varistor VDR2? would be much grateful, in my case they are burned

[nickbaker]

Hi Magic Smoke. Brilliant video thanks. I am hoping you have solved my problem with my dryer but I have a related question about the cables connected to the PCB. How can I send you the details to see if you can help? Thanks, Nick

[kennyward]

Awesome video. Thanks.
I had the same blown resistor and chip, replaced both but think I messed something up or something else is also fried. Had a closer look and the very small component at s1 just under the chip looked slightly out of position maybe due to the heat gun heartening it.Went to move it back and managed to drop and lose it. Would you know what it is and where I could get one or do u offer a repair service as I’m not 100% sure it was out of place to begin with?

[johngraham]

You didn’t say what you calculated the value of the resister to be i see you used six to replace it but could you elaborate on exactly how you did it.

[shaunym]

Great Video. Ordered the parts and will have a go. Luckily I am good at soldering :-)

[sarge]

Hi, thank you for the video and explanation. You mentioned that you sold the lnk304gn and the 47 ohm 3 watt resistor on ebay. Could you please provide me with the ebay link, thanks

[kokmans]

Hello.. I have this issue.. but do you know what value from the new resistor is?... You make a new one .. I hope you can give me the awnser ... Thanks.

[zofbtb]

I found your video interesting but a bit beyond my GCSE physics from many years ago!

We have a Zanussi ZDC47100W which died today after being run with the water tank overflowing. I was hoping it was just a thermal fuse replacement but can't seem to find it ( if it's a PCB problem I'd have to send that away to get the replacement component soldered on).

I've had the dryer open to change the belt last year and had a quick look inside tonight. Does anyone know where the thermal fuse is? Many thanks.

[burreifort]

Thank you for this video. I am having an issue with my Zanussi dryer ZTH 485 which does not show any sign of life. I have removed the board from the dryer and was checking for some continuity. Most were showing continuity, but I am not sure where to look as I this is the first time to attempt something like this. Any help?

[gearstil]

Hello, what is the name of the solder paste that you use?