Bed temp sensor stuck to 51°C

[Sp0oNy]

Hi,
I have a A20M since 2019/10.
It was offline for a month, for an hotend temp sensor problem.

I received and changed the whole hotend, and it resolved my initial problem...
But now I face another issue : Bed temp seems to stuck to 51°C-52°C with or without heating.



Same after rebooting / Unplugging the printer, unplugging the motherboard BED connector...

What can I do to resolve this issue ?
Thanks for your advices !

[William]

Hi,if the connecting line between the hot bed and the main board is unplugged (as shown in the figure), or 51 ℃ is displayed, the main board should be broken.

1588820317(1).jpg (233.91 KiB) Viewed 5300 times

[Sp0oNy]

Thanks for your fast answer !

It seems that I don't have the same motherboard.
I unplugged this connector (the only one that leads to the bed), but the temp still the same :

[William]

Hi,the motherboard should be broken.
You can contact the salesman to replace it.

[Sp0oNy]

Thanks.

It will probably be complicated to use the salesman way for guarantee.
I bought the printer online, and the saler don't sell spare parts : I'll have to send back the whole printer...

[William]

can you tell me purchase platform, order number, country.we can send a new motherboard to you.

[Sp0oNy]

Sorry for my late response !
Thanks, I'll PM you with those informations.

[William]

Hi，you can also contact the salesperson in the online store.