No Power to Heat Bed
I have MK2.5s and it has lost power to the heat bead.
- All connections tight
- All cables checked - no damage.
- Connections to Rambo board are tight and secure.
- Voltage to Hot end is 12 volts
- Voltage to heat bed is 3.4 volts
I detached heat bed power cables from Rambo Board and checked the poles inside the connector - 3.4 volts
I detached the heat bed power cables and tested the poles inside its Rambo attachment. - 12 volts.
Prusa tech chat says Rambo Board needs replacing. Prusa doesn’t have one, and their supplier in the US doesn’t have one. Does anyone out there have any ideas or suggestions ?
RE: No Power to Heat Bed
Did you check all of the fuses?
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Chuck H
3D Printer Review Blog
RE: No Power to Heat Bed
Yes, all fuses are fine.
RE:
I would check the internal resistance of the heating bed. The value should be around 1 Ohm (12V). If the resistance deviates significantly, the heating bed may be defective.
https://help.prusa3d.com/article/multimeter-usage_2117 (see table).
wbr,
Karl
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.