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Connected 48V PSU to AP900 by mistake!
- ollylat
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22 Dec 2020 12:18 #1
by ollylat
Connected 48V PSU to AP900 by mistake! was created by ollylat
Hi,
I have an AP900 AP and I accidentally plugged it into a 48V PSU. Now I plug the proper 12V one nothing comes on. No lights nothing. Does anyone know what I need to check for like which capacitor etc etc. I am competent with electronics.......but clearly i need some new glasses....
TIA
Olly
I have an AP900 AP and I accidentally plugged it into a 48V PSU. Now I plug the proper 12V one nothing comes on. No lights nothing. Does anyone know what I need to check for like which capacitor etc etc. I am competent with electronics.......but clearly i need some new glasses....
TIA
Olly
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- hornbyp
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22 Dec 2020 14:19 #2
by hornbyp
Replied by hornbyp on topic Re: Connected 48V PSU to AP900 by mistake!
Any obvious Linear Voltage Regulators...
![](https://uk.farnell.com/productimages/standard/en_GB/1087089-40.jpg)
or 'buck' converter ICs in there?
![](https://a.pololu-files.com/picture/0J10725.1200.jpg?fc62b5eea3fccee5923997377e31e91e)
These are points where you can check for 12V 'in' and 5V 'out' (probably!). Of course, what actually happened when 48V was applied was in the lap of the gods - I take it no 'magic smoke' escaped? ... i.e. there's no visible damage?
![](https://uk.farnell.com/productimages/standard/en_GB/1087089-40.jpg)
or 'buck' converter ICs in there?
![](https://a.pololu-files.com/picture/0J10725.1200.jpg?fc62b5eea3fccee5923997377e31e91e)
These are points where you can check for 12V 'in' and 5V 'out' (probably!). Of course, what actually happened when 48V was applied was in the lap of the gods - I take it no 'magic smoke' escaped? ... i.e. there's no visible damage?
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