# Novation Ultranova Boot Loop

**URL:** <https://forums.syntaur.com/t/novation-ultranova-boot-loop/5598>\
**Category:** Uncategorized\
**Created:** [April 16, 2023, 7:25am UTC](https://forums.syntaur.com/t/novation-ultranova-boot-loop/5598 "2023-04-16T07:25:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![beckersystems](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/b/71c47a/32.png) [@beckersystems](https://forums.syntaur.com/u/beckersystems)\
**Post date:** [April 16, 2023, 7:25am UTC](https://forums.syntaur.com/t/novation-ultranova-boot-loop/5598/1 "2023-04-16T07:25:23Z")

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Hello together, i have a problem with my Ultranova. If i power it up, it shows crab on the Display and reboots. For me it looks like there is a problem with a supplyvoltage… I measured the 3.3V after REG2 and found out, that it goes down to 0,6V when it loops the boot. I tried to power it with 3.3V over a external Vreg, but the problem still exist.

Does anyone know this problem? If it´s the µC i will need a new Board…

If anyone has schematics for me, it would be nice.

Greets

Christoph