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The Logitech M170 is a wireless mouse from Logitech. Released in 2016.

Dropped mouse now red laser light not working

Logitech Wireless w/ Keyboard (receiver and keyboard work fine) mouse dropped now redlight does not turn on. M-R0013 new battery - tested in remote works fine -

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@ repair pug, I did attempt to see if fixable, however there were multiple pieces of plastic, metal and loose circuit boards. Just bought a new one. Thank you for taking time to answer!

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If the mouse was dropped and the sensor light no longer turns on, the impact likely damaged the LED or the internal board. Since the receiver and keyboard still work, it’s definitely the mouse itself. You can try re-seating the battery and checking for loose contacts, but in most cases a drop like that means the mouse is done.

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I did take apart, several pieces broken. Just replaced it. Thanks

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Sounds like the Optical light came off the PCB (Printed Chip on Board) from my research this is an ongoing issue with the mouse after being dropped.

-My best bet would be that the light came off the solder joints with - or + connections and causing it not to light and unable to reflect a light to the sensor.

You could try taking the mouse apart by locating all the screws, some may be under the mouse glider pads on bottom of mouse, and pop it open with a spudger prying tool.

Make sure both the LED connectors are seated correctly into the solder joints on

- and + on the PCB.

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layman terms

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This just happened to my daughter’s mouse yesterday. I simply took the mouse apart (just one screw) - and snapped it back together - it works fine now. (I think the drop must have moved the roller off of its proper position). It took longer to find the right screw driver than to fix the problen (probably 2 minutes total once I had the screw driver)

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Thank for the advise I fixed mine after reading this , the pointer sensor was hooked off I just snapped it back into position

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Likewise, took it apart, futzed with it, cleaned it up, put it back together, fresh battery, now works fine :)

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Mice are not durable. But you could have dialoged one of the boards. You could disassemble and see.

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My mouse was dropped, the red light no longer works, but the mouse still does with no issues? WTF is up with that?

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i had purchased Logitech M221 silent mouse and realize that the Optic light is not working, but the mouse is working perfectly alright. Hence requested for a replacement and surprised to receive a new mouse again in the same condition. So wondering whether the Optical light will work or not on this model.

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Yes I ordered the same M221 same problem r- they replaced it - same issure - just bought the M185 with Keyboard and Mouse wireless - WONDERFUL!

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Have the same trouble with Mac mouse. Seems odd the that the diode tracker light not working but mouse seem(?)

to be totally functional-wassup?

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Wow! 3 Yrs later dropped mouse again - TBH I have dropped many many times but this time in pieces like 3yrs ago when it wouldn’t work. Followed directions from above:

@repair_pug

Dropped mouse now red laser light not working

it worked- thank you!! [It - meaning light didn’t work - dislodged from hit to ground- I used plastic tools that I bought for fixing phone screen-so not to short anything out- I easily pushed a wire and plastic back to where it looked like it should go. ]

works great -with a lil tape also ? Thanks

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Sounds like your mouse might have gotten damaged when it dropped, especially since the red laser light isn’t turning on even with a fresh battery. I had a similar thing happen with my wireless mouse once—I dropped it, and the sensor just stopped lighting up, even though the receiver and buttons worked fine. Sometimes the internal components get knocked loose or break, and the light/sensor stops working.

If the mouse still doesn’t respond after changing batteries and trying a reset, it might need repair or replacement. You could try opening it up carefully to check for loose parts, but if you’re not comfortable, getting a new mouse might be the easiest fix.

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I had the same issue. I dropped my wireless mouse, and the red laser no longer lit up, even though the buttons and the receiver still functioned. Tried with fresh batteries and resetting, but nothing changed. Eventually, I carefully opened the casing (just one screw), reseated everything, and the light came back on. Looks like the LED or its solder points got a little loose from impact. It was fixed for me with a gentle opening and reseating.

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