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Forum Index : Microcontroller and PC projects : olimex pc dead temp

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stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2384
Posted: 08:06pm 10 Apr 2025
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I use an Olimex 3020 mini pc and plugged a usb lead into the front usb socket but wrong way ie small usb for camera that don't fit but shorted the usb and the pc shut down and wouldn't repower. oh dear.
a google search said fuses in the psu so disconnected pc and moved to kitchen table and it powered up?? maybe a thermal fuse that takes 5 minutes but it's ok.
is this normal pc usb overload behaviour?
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7433
Posted: 09:22pm 10 Apr 2025
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It's quite possible. Sometimes they use self-resetting fuses or lock-out but reset on the next power up.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
hhtg1968
Senior Member

Joined: 25/05/2023
Location: Germany
Posts: 135
Posted: 06:23am 11 Apr 2025
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  stanleyella said  I use an Olimex 3020 mini pc and plugged a usb lead into the front usb socket but wrong way ie small usb for camera that don't fit but shorted the usb and the pc shut down and wouldn't repower. oh dear.
a google search said fuses in the psu so disconnected pc and moved to kitchen table and it powered up?? maybe a thermal fuse that takes 5 minutes but it's ok.
is this normal pc usb overload behaviour?


Hello. I am curious. What is an olimex 3020 mini pc?
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3981
Posted: 07:57am 11 Apr 2025
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Typo for Optiplex?

John
 
stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2384
Posted: 02:14pm 11 Apr 2025
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sorry.. optplex 3020.. never overloaded a usb before. OK it was £70 sold as refurbished but suits me. win 11 (arrgh) cloned to 240G ssd. 8G ram. core I5.
Being compact it's not as easy as a normal desktop pc to work on and dunno where I'd get another psu so glad it reset.. or maybe the mother board reset.
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7433
Posted: 02:19pm 11 Apr 2025
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It's not the PSU that trips usually, it's the USB port protection (if there is any) that shuts it off. Hopefully.  :)
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
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