HOT END/MOTOR ISSUES

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DoberMan
Posts: 3
Joined: Thu Jun 18, 2020 9:55 pm

HOT END/MOTOR ISSUES

Post by DoberMan » Thu Jun 18, 2020 10:10 pm

Hello, i am an eletronics engineer but i am losing my mind with this printer A20M GT2560 V3.0...

I was able to build it and use it for 3 months all just fine, no issues!!

- One day i printed a higher large print and the cables somehow got between the print and the hotend and melted the cables slightly. Dead board with only bluescreen.

- replaced the board, repaired and tied the cables and ALL OK for more 2 months!

- later i printed a higher object again, and bamm cables got melted between the print object and the hotend, but this time the board seemed ok, but the hotend doesn't heat, so i replaced the hotend, but no heat, so replaced the board again. Received the new board today, hotend works, but the X axis homes to the right side and only moves to the right. The motor for the X doesn't release with 'disable steppers'.

To sum up, i got 3 not working boards...

Board 1: No screen
Board 2: No hotend
Board 3: X-Axis fail


Please help, i am losing my mind here. My best bet now would be try to repair the board 2, but i can't identify the cause, i can't even identify where is the hotend mosfet...

I have videos and fotos if it helps.

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William
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Posts: 6340
Joined: Tue Jun 07, 2016 9:38 am

Re: HOT END/MOTOR ISSUES

Post by William » Fri Jun 19, 2020 10:15 am

Hi, here
微信图片_20200619101438.png
微信图片_20200619101438.png (1.16 MiB) Viewed 4611 times
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

DoberMan
Posts: 3
Joined: Thu Jun 18, 2020 9:55 pm

Re: HOT END/MOTOR ISSUES

Post by DoberMan » Fri Jun 19, 2020 10:38 am

Hi William,

thx for reply.

I replaced the mosfet on board 2, but somehow i must have given too much heat, and messed up the layer, because now the hotend keeps getting hotter right from the start and doesn't stop... I even tried to reroute the track with an external 100k resistor but got no heat on hotend this way, so i removed it.

To sum up:

Board 1: Trash, no mosfets and no screen
Board 2: Hotend keeps heating. Trashed E0.
Board 3: X Axis issue

I think i will try to mess with the configuration.h of board 2, and try to move every function of E0 to E1, and E1 to E2, and route the conectors. Anyone done this?

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William
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Joined: Tue Jun 07, 2016 9:38 am

Re: HOT END/MOTOR ISSUES

Post by William » Fri Jun 19, 2020 10:48 am

It is recommended that you directly replace the new motherboard
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

DoberMan
Posts: 3
Joined: Thu Jun 18, 2020 9:55 pm

Re: HOT END/MOTOR ISSUES

Post by DoberMan » Tue Jun 23, 2020 1:53 am

Hello,

the V3.0 is not available anymore on ALi Express or Banggood where i bought the Printer. The only board available is the V4.0 and the connectors are not the same for the extruder and the LCD.

How am i going to solve this. I am in contact with Geeetech throught the ALi express app trying to get a replacement, but there seems to be serious resilience to this matter. My dislike towards Geeetech is growing... I have a 350€ printer stoped since february with NO solution so far, and already ordered 2 main boards...

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William
Site Admin
Posts: 6340
Joined: Tue Jun 07, 2016 9:38 am

Re: HOT END/MOTOR ISSUES

Post by William » Tue Jun 23, 2020 9:49 am

Hi, if you need a motherboard, you can contact this email: judy.yu@geeetech.cn
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

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