lcd 12864-3d

cschisler · Post by **cschisler** » Fri Jul 19, 2019 11:49 am

i installed a new gt2560 v3 controller board. now the lcd flashes and beeps. my a20m is useless. i fashed it with different marlins with no luck. please help. the controller board has 3 red led's lit. while flashing the yellow led flash once firmware is loaded the yellow led stops flashing.

Post by **William** » Fri Jul 19, 2019 2:20 pm

Hi, You can

Reconnect the screen cable to try it out;
go to the official website to download the firmware and then upgrade

I hope this can help you.

cschisler · Post by **cschisler** » Tue Jul 23, 2019 3:38 am

thanks for the response i've done both with no luck. i was working on the system last night trying to ohm out the cable just in case it had a broken trace. not an easy task but all seemed to be connected. i did notice that the CPU on the board got very hot very quickly. even with all cables were disconnected (except for power) should the processor get that hot? it was almost too warm to touch. even the board underneath the chip got very warm. i realize that the board is acting like a heat sink but we are talking getting very warm within the 1st minute after power up. i've attached a short video of the problem in action. it is a zipped mp4 file.

cschisler · Post by **cschisler** » Tue Jul 23, 2019 3:40 am

where can i purchase a new lcd for this system just in case it is bad?

cschisler · Post by **cschisler** » Wed Jul 24, 2019 1:29 am

did you get a chance to view the video? could you tell me where i can purchase the lcd display? is the processor suppose to run that hot?

Post by **William** » Wed Jul 24, 2019 10:11 am

Hi， It looks like the screen line and the screen are not in good contact. You can try to reconnect the screen.
If you buy the screen, you can contact your sales for a detailed consultation.
By the way, if the motherboard is overheated, is there a heat sink on your driver board?

cschisler · Post by **cschisler** » Wed Jul 24, 2019 12:04 pm

there is no heat sink on the processor its self. there has never been one.....should there be one from the factory? i have no idea who my sales is to contact for a new lcd.

Post by **William** » Wed Jul 24, 2019 1:32 pm

OH, I just mean the heat sink on the drive board.

Post by **_kaktus_** » Wed Jul 24, 2019 3:16 pm

Hello.

If µC heats up, this is a symptom of abnormality.
If you find that it is too hot, there is a high probability that it is damaged

Ask your reseller for a replacement.
If you want to buy an extra copy, ask your GT Sellers.

cschisler · Post by **cschisler** » Thu Jul 25, 2019 1:01 am

i ordered one last week from your store. where can i purchase the lcd display?

Geeetech

lcd 12864-3d

lcd 12864-3d

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