overheating issues

[gemors]

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]

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

[gemors]

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 (59.81 KiB) Viewed 11862 times

regards
J

[gemors]

Hi
It's a Sanguinololu V1_3a A4988

Sanguinololu V1_3a A4988.jpg (59.81 KiB) Viewed 11862 times

[zhangxueyou]

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

[gemors]

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]

What is your printer type?

[gemors]

It's GEEEtech-PI3A
cheers
J

[gemors]

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

[zhangxueyou]

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 (395.11 KiB) Viewed 11849 times