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Hi All
So I got given a LG washing machine that I was told was working
upon testing a few weeks later , the machine clicked 2 times and then displays the DE error
i have took the door interlock out and saw I got no continuity across pins 2 and 3 like this video shows
also the small black part doesn’t stay down and lock as in video
I tried bending the metal bi strip it but not sure whether I should bend in or out and it’s still not staying down
I’m confused as to whether it’s a door lock or PCB issue my heart says lock but head says pcb as I did see the lock throwing and then going back before I dismantled it but the continuity test for solenoid is what is throwing me
please help as I just need this to last me till a new one arrives ideally I prefer a fix but understand pcb ain’t worth it
links to images and my own images and video https://ibb.co/FW0zw8b
https://ibb.co/v1N7qDR
https://ibb.co/F8rzvNN
https://ibb.co/m4XTC3jApologies in advance I do curse at the subject in one of the video please understand I felt annoyed and conned by this lady
difficult to tell a lot from vid and pics
these locks have 2 systems. both have to work for the door to lock
there is a round disk that is a small heater that heats the bi metal strip while the solenoid locks and unlocks the door
both systems have to be working to be able to work
most faults on these locks are down to bad connections to the heater disc. the disc is coated in something each side to make a good connection and this degrades over time due to the heat
Dave
electrofix wrote:difficult to tell a lot from vid and pics
these locks have 2 systems. both have to work for the door to lock
there is a round disk that is a small heater that heats the bi metal strip while the solenoid locks and unlocks the door
both systems have to be working to be able to work
most faults on these locks are down to bad connections to the heater disc. the disc is coated in something each side to make a good connection and this degrades over time due to the heat
Dave
funnily enough Dave when I took the lock apart the disc held in my the spring on one side of solenoid popped out and I had to put it back , Iv ordered a replacement lock and pray your right I’m just confused as I saw the lock being thrown when I had the interlock out of machine placement but still connected it clicked a couple of times as if it was locking then unlocking and gave DE error.Is it worth checking the pcb at back of machine I believe ?
the pcb receives the locked signal from the output wire of the lock
it has to receive this as it energises the solenoid. if the board does not get this or cant recognise then machine waont startyou cant check most LG board because they coat them in resin. it means you cant repair small electronic problems and have to change complete boards
Dave
I see only thing to do is hope and pray it’s just a lock as again now that you mention it that small disc had grey coating on either side worn off and I know when I did manual continuity checks with mrs help before dissembling I got nothing from any combo of pins so all I can do is hope it’s what you said but the lady is still adamant it was working which is bs from my tests and mould inside door.
cheers Dave helpful as always
electrofix wrote:the pcb receives the locked signal from the output wire of the lock
it has to receive this as it energises the solenoid. if the board does not get this or cant recognise then machine waont startyou cant check most LG board because they coat them in resin. it means you cant repair small electronic problems and have to change complete boards
Dave
sorry to bother you Dave but the part has been delayed and mrs wants to get some washing done for a temporary fix can I short the red and black cable to bypass the lock ?
Iv seen online it should be red and black how can I be sure they are the correct pins to short , again apologies for bothering you but mrs on my case
as you can imagine i cant condone shorting out a safety device
the purpose of this device is not only to prevent flooding but also to stop someones arm being injured if they happen to open the door and reach in while the machine is still moving
Dave
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