Houston we have a problem...
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@peirof if you look at the M122 output, its showing that theres no input voltage
Supply voltage: min 0.0, current 0.0, max 0.0 -
@jay_s_uk power its on, i am with usb connection, and power on...
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@peirof do you have a multimeter to check the power from the PSU?
Also check all the fuses if you haven't already -
thanks i will try, i put reports after
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@peirof which Duet do you have, and which fuse has blown?
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@peirof as supossed... first must solve the issue... i have changed the fuse.... and burn fast....
what protect these fuse... know where i have to search
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@jay_s_uk thanks
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@peirof I have not had time to prove anything ...tomorrow, but I have a question.
From that fuse. Does the Due Panel also depend? because it is in black
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@peirof yes the 5V from the PanelDue is also supplied via that fuse
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Hi,
This is a thought out loud, so you can tell me the mistakes I make, since I have no experience in electronics / electricity.
My goal is to identify which component is shorted, and which is causing the fuse to blow.
The components that this fuse monitors are:
- Due panel
- Extruder Heater
- Extruder Stepper
- Axis Stepper.
If the fuse burns, as soon as the printer is turned on, I have to discard the components that have not received power yet ... Which leaves us alone:
- Due panel.
No? Something escapes me? Do you watch any more components?
A component that could cause problems is the Heater ... but if it has not received power when the fuse blows ... I do not think it is the cause of the problem
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another question that arises ...
I think I remember, that there have been moments, I don't remember if now, in config.g, in M906 I have or have had a current for 1200 motors, which exceeds the protection of the fuse.
Why hasn't it been burned before?
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@peirof Do you have a multi-meter? if your blowing a fuse the safest thing to do would be to check all your wiring for shorts before you connect anything.
looking at the picture you posted above there appears to be stray strands of wire on the right most stepper connector (red wire)
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@peirof said in Houston we have a problem...:
A component that could cause problems is the Heater ... but if it has not received power when the fuse blows ... I do not think it is the cause of the problem
Heaters are switched on the ground side not the supply side so a heater that had a short to ground would start taking power as soon as the board has power. That said its unlikely that a normal heater in normal operation will draw 7.5A+ and blow the fuse, however a faulty heater with an internal short could do.
As has already been said shorts in the wiring can also be the cause, most likely is VIN to ground.
It is not impossible for it to be the paneldue, but that is the most unlikely as it gets 5V so it is unlikely for it to draw enough current at 5V to blow the fuse, unless the 5V regulator has also failed short (and then you have a lot of problems as VIN on the 5V line will damage other things as well.
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hi,
think i have find it, but something its wrong....
i have unplugged:
A)- First
- Heater
- Steppers motors
- Panel Due
B)- Second
- I have changed the burned fuse, 7,5A
C)- Third
- Power on Duet/Printer
and....
After few seconds, maybe 10s...
Smoke has started to come out from the cable connecting the Zprobe to the Duet. As fast as I could I have turned off the printer, but I think it was too late ...I have disconnected the Zprobe (Precision Piezo), and I have turned on the printer ... and I think wrong ...
Many lights on on the plate, and it does not respond to the orders sent by Panel Due ...
I have tried to connect by Telnet ... and it has not been possible ...
I think DUET has burned ...
what could have happened?
Is it like the new fuse didn't do its job?
What are my options? -
disaster photos
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Thinking a bit about what could have happened ... the only thing I can think of is that at some point, I would have connected the Precision Piezo in reverse ...
Could this be the cause of the disaster?
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@peirof possibly but its odd that it would base a 7.5A fuse to blow first and then start smoking! I cant see from the pictures but I assume the Paneldue is not connecting. Try connecting over USB (with everything else unplugged) and the SD card removed and see if you get a comm port and can connect over YAT.
