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RAMPS 1.4 Short circuit

MatheusBrum

RAMPS 1.4 Short circuit
July 01, 2012 07:05PM

Registered: 12 years ago
Posts: 11

Hello,
Accidentally both heater wires touched the aluminium block and now the extruder isn't heating. The red led lights up very fast, when i send the command to turn on the extruder, and it turns off again. Every motors and the thermistor are working fine.
Anybody knows if there is a way to save the board?

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NewPerfection

Re: RAMPS 1.4 Short circuit
July 02, 2012 01:37AM

Admin
Registered: 15 years ago
Posts: 1,470

Probably just fried the MOSFET. They are cheap though. Are you in the US? If so you can order the part from Digikey plus about $2 for shipping.

http://www.digikey.com/product-search/en?x=0&y=0〈=en&site=us&KeyWords=%09497-6742-5-ND

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MatheusBrum

Re: RAMPS 1.4 Short circuit
July 02, 2012 03:49AM

Registered: 12 years ago
Posts: 11

I'm from Brazil. I would pay $40 for shipping!
I read in a forum that LRFZ44N mosfet is a good equivalent (is easier to find here). Do you think it will work?
LRFZ44N Datasheet
Thanks for the help!