Page 1 of 4
lcd 12864-3d
Posted: Fri Jul 19, 2019 11:49 am
by cschisler
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.
Re: lcd 12864-3d
Posted: Fri Jul 19, 2019 2:20 pm
by William
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.
Re: lcd 12864-3d
Posted: Tue Jul 23, 2019 3:38 am
by cschisler
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.
Re: lcd 12864-3d
Posted: Tue Jul 23, 2019 3:40 am
by cschisler
where can i purchase a new lcd for this system just in case it is bad?
Re: lcd 12864-3d
Posted: Wed Jul 24, 2019 1:29 am
by cschisler
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?
Re: lcd 12864-3d
Posted: Wed Jul 24, 2019 10:11 am
by William
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?
Re: lcd 12864-3d
Posted: Wed Jul 24, 2019 12:04 pm
by cschisler
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.
Re: lcd 12864-3d
Posted: Wed Jul 24, 2019 1:32 pm
by William
OH, I just mean the heat sink on the drive board.
Re: lcd 12864-3d
Posted: Wed Jul 24, 2019 3:16 pm
by _kaktus_
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.
Re: lcd 12864-3d
Posted: Thu Jul 25, 2019 1:01 am
by cschisler
i ordered one last week from your store. where can i purchase the lcd display?