# Olympus FV10MP shutter & AOM problem

**URL:** <https://forum.microlist.org/t/olympus-fv10mp-shutter-aom-problem/3164>\
**Category:** Hardware\
**Created:** [July 14, 2025, 1:39pm UTC](https://forum.microlist.org/t/olympus-fv10mp-shutter-aom-problem/3164 "2025-07-14T13:39:53Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![LCJ](https://avatars.discourse-cdn.com/v4/letter/l/87869e/32.png) [@LCJ](https://forum.microlist.org/u/LCJ)\
**Post date:** [July 14, 2025, 1:39pm UTC](https://forum.microlist.org/t/olympus-fv10mp-shutter-aom-problem/3164/1 "2025-07-14T13:39:54Z")

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Hi,

I am trying to get an Olympus multiphoton setup from 2009 back into working condition. I would greatly appreciate any help/hints!

We can’t control the shutter in front of the laser with the FV10 software, although it opens when using a software called FV Test. Also, it seems like the AOM right in front of the laser is likewise not working and we can’t control the laser power. After imaging for a while it drops. Could this be due to a problem with the FV10MP-LCU? Or could this maybe be a known bug this system develops over time? I am clueless (and physics is not my greatest strength… )