overheating issues

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

overheating issues

Post by gemors » Sun Jun 07, 2015 5:53 pm

G'day all,

Got my printer about 4 weeks ago, took me a week to build (very little spare time), been printing a few things then yesterday, I got this very strong burned plastic smell and the printer just stopped. Now if I plug the usb cable in the LCS will show the normal information and it's readable, but when I put the main power on then I cannot reead the lcd pannel all the little 'blocks' are active. I can connect to the printer bur no controls or commands make it through.

Please Please help me

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: overheating issues

Post by zhangxueyou » Mon Jun 08, 2015 9:58 am

Hello, what's is your printer type and mainboard type? Where is the smell from?

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

Re: overheating issues

Post by gemors » Mon Jun 08, 2015 2:02 pm

Hi mate,
I believe it's a 'Sanguinololu V1.3a A4988', you can see in the attached pic what has happened.
Sanguinololu V1_3a A4988.jpg
Sanguinololu V1_3a A4988.jpg (59.81 KiB) Viewed 11864 times
regards
J

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

Re: overheating issues

Post by gemors » Mon Jun 08, 2015 2:03 pm

Hi
It's a Sanguinololu V1_3a A4988
Sanguinololu V1_3a A4988.jpg
Sanguinololu V1_3a A4988.jpg (59.81 KiB) Viewed 11864 times

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: overheating issues

Post by zhangxueyou » Mon Jun 08, 2015 2:10 pm

Hi, can you tell me what's the resistance of hot bed? How did you mount the mainboard to acrylic plate?

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

Re: overheating issues

Post by gemors » Mon Jun 08, 2015 3:06 pm

The hotbed was pre soldered by geeetech and hooked into the blue connectors, the ones that melted down in the picture.

I cannot measure the resistance as the board is pretty much dead

This should not happen...

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: overheating issues

Post by zhangxueyou » Mon Jun 08, 2015 3:09 pm

What is your printer type?

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

Re: overheating issues

Post by gemors » Mon Jun 08, 2015 4:00 pm

It's GEEEtech-PI3A
cheers
J

gemors
Posts: 19
Joined: Sun Jun 07, 2015 5:46 pm

Re: overheating issues

Post by gemors » Mon Jun 08, 2015 4:06 pm

Missed your one question,
The main-board is mounted with spacers to the acrylic plate.
regards
J

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: overheating issues

Post by zhangxueyou » Mon Jun 08, 2015 4:18 pm

What is the mounting direction of mainboard?
Disconnect the wires of hot bed, you can test the resistance of hotbed as the picture:
test hot bed resistance1.png
test hot bed resistance1.png (395.11 KiB) Viewed 11851 times

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