LCD doesn't work, power supply is on, USB not detected from PC

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OniX
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Joined: Sat Aug 17, 2019 4:05 am

LCD doesn't work, power supply is on, USB not detected from PC

Post by OniX » Sat Aug 17, 2019 4:43 am

Hi everybody,
I was attempting to repair my A20M printer (maybe a problem on thermistore, as suggested by Geeetech support).
Once i've assembled the hotend block i tried to "preheat PLA end" from lcd screen, suddenly the lcd screen has "turned off".
Now i can't control the printer neither from lcd nor from PC because with the usb cable isn't recognized at all (not a single beep form pc).
How i can solve this?

video explanation: https://www.youtube.com/watch?v=OWT2gm1UBNY

i've already disassembled board (gt2560) but i'm not sure what to check...

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

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by William » Sat Aug 17, 2019 9:26 am

Hi, You can try
1. Reconnect the screen cable to try it out;

2. Check if there are three lights on the motherboard when the printer is turned on.
You can refer to this:
v3板正常情况.jpg
v3板正常情况.jpg (221.89 KiB) Viewed 6390 times
I hope this can help you.
-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!

OniX
Posts: 3
Joined: Sat Aug 17, 2019 4:05 am

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by OniX » Sat Aug 17, 2019 7:07 pm

only one light for me, the one 12 VB

the led on power supply is green.

I need another motherboard?
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William
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Joined: Tue Jun 07, 2016 9:38 am

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by William » Mon Aug 19, 2019 9:04 am

Hi, If only one light is on, it is not normal.
You can contact your sales to replace the motherboard.
I hope this can help you.
-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!

OniX
Posts: 3
Joined: Sat Aug 17, 2019 4:05 am

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by OniX » Tue Aug 20, 2019 6:18 pm

Problem solved by Geeetech support that sent to me a brand new gt2560. Thank you!

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

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by William » Tue Aug 20, 2019 6:30 pm

:D
-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!

Scubatron
Posts: 4
Joined: Mon Nov 18, 2019 1:56 am

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by Scubatron » Mon Nov 18, 2019 1:57 am

I went to post this exact same issue. While cleaning the hotend the system just stopped displaying anything but i could hear it on.

Taking it apart if find i have the exact same light on and hope to get a replacement gt2560 board from support thanks to your post!

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

Re: LCD doesn't work, power supply is on, USB not detected from PC

Post by William » Mon Nov 18, 2019 9:14 am

Hi, If only one light is on your motherboard,
You may need to contact your sales to replace the 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!

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