anet a8 lcd screen brands

3. Check if it"s the issue of mainboard or lcd screen. Press the "Reset" button on the mainboard, and see if the D1 lights up on the mainboard. If the D1 indicator doesn"t lights on, it"s the mainboard that broken and need to change.

If your Anet A8 screen shows white blocks after power up, reconnect all the cables. If still not work, click the "RESET" on the mainboard. If still doesn"t work, you need to change for a new motherboard.

Also, non conductive hot glue for your mosfets and main board. the vibration will cause havoc with the anet stuff. I found the voltage was there on the bed output only when nothing attached (I have always used external mosfets) but when your connect the load either the mosfet or the bed (or nozzle) the voltage went to less than 1 volt but still showed the output. Got it replaced under warranty but now I have 2 good Anet 1284p v1.7 boards that work.... lol with a little hot glue.... I cant tell you how great the marlin upgrade, the SKR upgrade, the BLTouch upgrade has done for 3d printing........ But without going thru all the trouble and time with the OEM Anet A8 stuff, I would not have appreciated the new stuff...... Let me know if I can help any further...... I dont work so I got a ton of free time on my hands....................