Fans not worked after turn printer on without LCD.

Stalkeros

Hi. My Ender 3v2 have a problem - coolers in hotend (both) and in motherboard not worked. Before I mistekenly turned on the printer without LCD, this could be a reason? All coonectors checked. FW reinstall few times from official site, but not help. Thx.

Stalkeros

@beejack said in Fans not worked after turn printer on without LCD.:

Thanks for sharing the info.
I assume the mosfet fuse was F2. Was it the same size as F3

The F3 is designated T20, according to what I found on the internet, it is rated from 3 to 3.43A, but it would be better if the manufacturer answered. I did not remove the board and did not look at the tracks, but probably fuse F2 is protect for MOSFET Q1 and Q2, and fuse F3 for Q3, but I could be wrong.!
F.JPG
T20
Full datasheet: https://www.tlcet.com.cn/upload/technical/20180614TQZkPl4XmS.pdf

beejack

Thanks for sharing the info.
I assume the mosfet fuse was F2. Was it the same size as F3?

Stalkeros

Great creality support. I fixed the board myself. It was an extremely small fuse hidden between three plugs. If anyone has the same problem then change fuse F3 near k-fan2 and J1 and heat1, its rating is 1A (H), also I had to replace the closest MOSFET fuse.