Issue with Miniscope V4 Blue LED Not Functioning

[Ella Hanzin]

Hi all,

I've been using the UCLA Miniscope V4 for quite some time, but recently encountered an issue: the blue LED has stopped responding and no longer turns on.

Has anyone experienced a similar problem or might know what could be causing this?
I would appreciate any insights or suggestions, as I'm currently at a loss.

Best regards,

Ella

[Daniel Aharoni]

HI Ella,

My guess would be that the LED has been damaged somehow. Are you generally running it quite bright? Say above a value of 70 in the Miniscope software? If so, this can, in some cases, result in the LED overheating during long experiments and cause it to break. 

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Daniel B. Aharoni, PhD

Assistant Professor
Dept. of Neurology, UCLA

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[Ella Hanzin]

Hi Daniel,

Actually, we typically use no more than 20% of the blue light intensity, so I don’t believe the issue is related to the LED overheating.

I’ve noticed that the software doesn’t seem to be responding properly—it might be a communication issue between the Miniscope and the software. For example, the orientation indicator on the software isn’t reacting to changes in the Miniscope’s direction, if that makes sense.

I also tried connecting the Miniscope to a different computer, but the behavior was the same: the blue LED doesn’t turn on, and the software still doesn’t respond, even though the video camera is functioning.

This leads me to believe the problem might be more complex. Would you be able to help me troubleshoot this?

Best regards,
Ella