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New build, no power on board
Posted: Wed Jul 13, 2016 9:43 pm
by abecker
Hey everyone,
I just finished building the Rostock Max v2 and when I went to power it on the power supply fan turns on but the RAMBO fan does not. There is also no display on the LCD. I checked the 15amp fuse and it looked blown so I replaced it and there is still no power with the new fuse. What would you recommend checking first?
Re: New build, no power on board
Posted: Wed Jul 13, 2016 10:19 pm
by Mac The Knife
Check the wiring at the rambo board connectors. make sure you don't have any loose strands of wire.
Re: New build, no power on board
Posted: Wed Jul 13, 2016 10:19 pm
by Mac The Knife
And you have the two nanofuses to check also. the 15 amp is just for the heated bed.
Re: New build, no power on board
Posted: Wed Jul 13, 2016 10:23 pm
by Xenocrates
I would first check for shorts. For example, on the LCD adapter, where the fan was soldered to the board, and so on. If you haven't got a multi-meter, I would buy one for this purpose after a visual inspection. Set it to continuity mode, and see what shows as being connected, then take a closer look. I would also test the 5A nano-fuses that supply logic and hotend power.
Re: New build, no power on board
Posted: Thu Jul 14, 2016 8:29 am
by abecker
I'm picking up a multimeter tonight and will test for shorts.
Re: New build, no power on board
Posted: Thu Jul 14, 2016 5:12 pm
by abecker
I just checked the fuses, it looks like all 3 fuses blew when I first connnectes power to the board.
Re: New build, no power on board
Posted: Thu Jul 14, 2016 6:54 pm
by abecker
Below are pictures of the power supply and power connector. Verified all terminals on power connector are supplying 12 volts.
Re: New build, no power on board
Posted: Thu Jul 14, 2016 11:14 pm
by Qdeathstar
did you replace the fusses yet? I would replace the fuses then unplug everything from the board and power it up and see if the lights on the board come on.
If yes, turn it back off and plug one thing in. Keep going one at a time till you find out what is blowing the board.
if no, time for a new board.
Re: New build, no power on board
Posted: Fri Jul 15, 2016 12:47 am
by abecker
Not yet. Those will be in on Saturday. I will give that a try. Thank you!
Re: New build, no power on board
Posted: Sat Jul 16, 2016 12:18 pm
by abecker
So its odd that all fuses blew the first time, but I plugged everything back in with new fuses and it powers up now. Thank you for the support
Re: New build, no power on board
Posted: Sat Jul 16, 2016 3:30 pm
by Qdeathstar
Maybe the fuses went bad during production.
I don't know the exact layout of the board, but I find it very strange that all three fuses were blown...
Glad you got it up and running.
I might buy a few extra fuses just it case when the fuse blew it cleared itself and once things start moving it'll happen again...
Re: New build, no power on board
Posted: Sat Jul 16, 2016 4:15 pm
by abecker
Yeah I did get some extras, and I am thinking the same thing about them already being bad. From searching online I can't find anyone where all three blew at the same time.
Re: New build, no power on board
Posted: Mon Jul 18, 2016 3:23 am
by Eaglezsoar
You were just unlucky, but it is great that you got it working!
Happy Printing!