<commit_before>---
layout: post
title: Raspberry PI 3 one wire fix!
published: true
---

### Fixing RP3 dead usb ports:
![_config.yml](https://pbs.twimg.com/media/DApSHfzXgAQ65M6.jpg:large)
###### This week, i decided to power on an old RaspberryPI3 and use it to monitor a new webservice i built instead of 24/7 powering a whole PC. Only to find out keyboard/mouse connected to PI are not working. After testing i found out that the USB ports are not outputing any power (5v) although the board is not phyisically damaged in any way .


##### i found out that raspberrypi boards have testpoints that can be used for troubleshooting:
###### according to Wikipedia, A test point is a "location within an electronic circuit that is used to either monitor the state of the circuitry or to inject test signals"  so basicly testpoint's will help me find out what is actually preventing usb ports to work!

##### bellow is a list of RPI board test points:
| TestPoint ID | TestPoint Description |
|--------------|---------------------------------------------------------------------|
| PP1  | 5V  |
| PP4  | GND |
| PP5  | GND |
| PP6  | GND |
| PP7  | 5V after polyfuse |
| PP8  | 3V3 |<commit_msg>Update 2014-3-3-test.md<commit_after>---
layout: post
title: Raspberry PI 3 one wire fix!
published: true
---

### Fixing RP3 dead usb ports:
![_config.yml](https://pbs.twimg.com/media/DApSHfzXgAQ65M6.jpg:large)
###### This week, i decided to power on an old RaspberryPI3 and use it to monitor a new webservice i built instead of 24/7 powering a whole PC. Only to find out keyboard/mouse connected to PI are not working. After testing i found out that the USB ports are not outputing any power (5v) although the board is not phyisically damaged in any way .


##### i found out that raspberrypi boards have testpoints that can be used for troubleshooting:
###### according to Wikipedia, A test point is a "location within an electronic circuit that is used to either monitor the state of the circuitry or to inject test signals"  so basicly testpoint's will help me find out what is actually preventing usb ports to work!

##### bellow is a list of RPI board test points:
| TestPoint ID | TestPoint Description |
|--------------|:----------------------|
| PP1  | 5V  |
| PP4  | GND |
| PP5  | GND |
| PP6  | GND |
| PP7  | 5V after polyfuse |
| PP8  | 3V3 |
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