Welcome! Log In Create A New Profile


Short circuit

Posted by Richardxx 
Short circuit
February 03, 2014 03:46PM
Hello All,

I have made a mendelmax 1,5 which was working fine till i made a stupid mistake.
I put a steel clip on the heatbed which have given a short circuit. (Lot of smoke angry smiley).because the traces has hit each other.
The heatbed is replaced but the problem now is that he continues heat, the heatbed didn't stops any more.

The problem must be in the megatronics v2, does anyone know what part of the main board may be burned.

I hope there is someone who can help.

Many thanks,
Re: Short circuit
February 04, 2014 02:59PM
The traces on your bed are exposed? confused smiley

What happened to the thermsistor? to monitor the bed temperature?

Edited 1 time(s). Last edit at 02/04/2014 03:00PM by ShadowRam.
Re: Short circuit
February 04, 2014 03:19PM
I guess that the MOSFET for the heatbed has failed short circuit. You would need to replace it.

What is Open Source?
What is Open Source Hardware?
Open Source in a nutshell: the Four Freedoms
CC BY-NC is not an Open Source license
Re: Short circuit
February 04, 2014 04:44PM
bobc is right, mosfet bit the dust and is shorted on.
Re: Short circuit
February 04, 2014 05:55PM
The thermsistor gives the right temperature.
Only the board didn't stop heating.
I have ordered a new Mosfet and Will recieve it within 3 day's

I hope it works , Will inform as soon as possible..

Many thanks for the advice.
Re: Short circuit
February 04, 2014 08:46PM
unless you see damage or a crack in the mosfet I would think it would still work usually the mosfets are rated for over 15A. the part STP55NF06L, which i think is one of them that are used, is rated for 55A!

Edited 1 time(s). Last edit at 02/04/2014 08:50PM by jamesdanielv.
Re: Short circuit
February 17, 2014 06:17PM
Hello All,

It was indeed the Mosfet.
I'm printing now.

Thank you all for your help.

Sorry, only registered users may post in this forum.

Click here to login