Hotend not heating up

Trying to get the tantillus set up again and started having an issue... The temperature just isn't moving. It started doing this once I had the tantillus hooked up to a new computer and installed the drivers/pronterface. First trial print it heated up to about 180, then the hotend seemed to shut off and won't start heating up again.

This happens even when the tantillus is not connected to the computer.

Any suggestions?

Thanks!

Just found the other similar thread on page 3. Seems like the symptoms are the same (red light comes on, thermister is reading the temp. correctly). But I feel like this same issue came up once before and Sublime had a quick fix for it when he was in our office. I just can't remember what it was

Hmm....

If you have a multimeter check for voltage on either side of the heater resistor. If you have around 15V then it is most likely the resistor has burnt out. You can also measure the resistance across the heater resistor. It should measure around 5.6ohms and if it does not measure anything then it is burnt out. Either you can get a new resistor or a ceramic heater cartridge. I just started using a 40watt ceramic heater and it heats up in 30seconds at 15V.

Google "12v 40w ceramic cartridge heater" and you will find things like [dx.com]

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Thanks, was able to test it today with a friends multimeter. We measured about 19V, and 45 kohms.

Hobocop Wrote:
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> Thanks, was able to test it today with a friends
> multimeter. We measured about 19V, and 45 kohms.


45kohms is most likely the result of the other ends of the wires connected to the board allowing some continuity across the transistor or even your hands. I would say you have a dead heater resistor.

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FFF Settings Calculator	Gcode post processors	Geometric Object Deposition Tool Blog
Tantillus.org	Mini Printable Lathe	How NOT to install a Pololu driver