Best way to identify a short?

[shentheory]

I messed up big time tonight guys. Before I go into it, please be gentle. I have very very little experience with electrical engineering, building this printer has been the most experience I've really ever had.

I have an E3d V6, and someone in my house who will remain nameless (me) decided to clean the hotend's nozzle with a brass brush, not thinking about/realizing it was powered on (yeah I know). There was a spark and the whole thing shut off.

After cursing for a few minutes I took off the LCD panel to look at the rambo, and didn't see anything out of the ordinary, aka crazy burn marks or discoloration . The 15A fuse in the rambo appears to not have blown. I cycled the power, and when I turn it on, the rambo fan powers up, but it seems a lot quieter, and the LCD screen stays dark. Since the LCD doesnt turn on, I'm assuming that the board got fried even though there is no obvious evidence.

Before I sadly order a new board, I want to make sure. Where is my best bet to look for a short? I feel like a total idiot! Thanks in advance.

[DavidF]

There are 3 other fuses on the board. Thier micro fuses. I think there is a picture in the "manual" check them.
Do a search on the forum and im sure you will find a couple of postings with pictures. The rambo is a pretty tough board, so it may be ok..
Also make sure you didnt accidently swap the connectors on the lcd..

[Eaglezsoar]

There are two other fuses besides the one that looks like a Car fuse.
They are small fuses that are in small sockets. One of them is blown, probably F3.

See these links for fuse locations and part numbers.

http://forum.seemecnc.com/viewtopic.php?f=36&t=5775


http://forum.seemecnc.com/viewtopic.php?f=37&t=2243

[shentheory]

There are two other fuses besides the one that looks like a Car fuse.
They are small fuses that are in small sockets. One of them is blown, probably F3.

See these links for fuse locations and part numbers.

http://forum.seemecnc.com/viewtopic.php?f=36&t=5775


http://forum.seemecnc.com/viewtopic.php?f=37&t=2243

Awesome, thanks a ton. Just ordered a handful of them, will update when they get here!! Thanks again.

[jram]

I had a similar mishap a few weeks ago. You can bridge the gap with micro clips attached to a mini fuse holder (10 amp) if you have a print that needs to be done before the fuses come. Mine printed for 20 hours like that until the fuses arrived.