# Taz 4 nozzle heating issues

**URL:** <https://forum.lulzbot.com/t/taz-4-nozzle-heating-issues/28001>\
**Category:** General\
**Created:** [June 1, 2026, 8:53pm UTC](https://forum.lulzbot.com/t/taz-4-nozzle-heating-issues/28001 "2026-06-01T20:53:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![eknaknak](https://avatars.discourse-cdn.com/v4/letter/e/aeb1de/32.png) [@eknaknak](https://forum.lulzbot.com/u/eknaknak)\
**Post date:** [June 1, 2026, 8:53pm UTC](https://forum.lulzbot.com/t/taz-4-nozzle-heating-issues/28001/1 "2026-06-01T20:53:45Z")

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I am trying to set up an old Taz 4 printer that has not been in operation for a while. I am quite inexperienced with 3D printers.

The nozzle has difficulty heating beyond 170 degrees celsius. It takes a while to get up to this temperature (~10 minutes). No error messages are displayed, it just eventually stops increasing temperature, and sometimes slowly drops temperature. I tried a completely different printhead and still had the same issue.

The bed appears to reach its goal temperature just fine, but sometimes when i try to heat both the nozzle and bed, the printer just stops and reboots, and the temperature goals are reset to 0…

May this just be a power supply issue, or is there any other component of the printer I might want to check out?

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**Author:** ![Wrathernaut](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/wrathernaut/32/13542_2.png) [@Wrathernaut](https://forum.lulzbot.com/u/Wrathernaut)\
**Post date:** [June 2, 2026, 1:48am UTC](https://forum.lulzbot.com/t/taz-4-nozzle-heating-issues/28001/2 "2026-06-02T01:48:22Z")

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Sounds like power supply.

A taz4 really is going to be a learning experience. I hope you don’t expect much more out of it. Printers have come a very long way, to the point a $200 printer will run circles around it.