Diode problems ..help

Other Hardware General Electronics
1

hi guys ... can i use an arduino nano without the diode

2

Which diode would that be ?

3

s4.

4

Can we all play ?

z123.

Please explain exactly which diode that you are referring to. Is this a classic Nano or one of the newer variants ?

5

i dont really know what you are talking about ...but whatever ... the diode is called s4 ..it is writen on it

6

and i think its a classic arduino nano and may be a cloud even

7

Whereabouts is this diode on the board ?
Why may you need to do without it ?

8

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here is the diode but its is dead so can i just use the arduino and unplug this diode

9

I'm guessing it is the Schottky diode between the USB socket and the 5V rail.
http://actrl.cz/blog/wp-content/uploads/nano_ch340_schematics-rev1.pdf
If you power the Nano via its Vin or 5V pins, does it work ?

10

yes

11

It sounds like the Schottky diode. If so, then I have replaced them in the past following "incidents" with power connections

Although they are SMD components they are reasonably easy to solder with a soldering iron

12

i know that i need to replace them ..but iam asking can i just go without replacing it just unpug it and solder

13

do you understand me

14

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note :;its not this part

15

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its this part .. this is the diode that i had circled it

16

its writen on it ;;s4

17

image
here

18

If the Nano works via its 5V and Vin pins, and that is enough for you, leave it as it is. There is no need to remove the dead diode which appears to have failed on open circuit.
If you want to power the Nano through the USB socket, then replace the dead diode.

19

if i want to power it from the usb can i just pull the diode out of the arduino nano and solder the two parts

20

because when i do this the usb power will work