Raspberry Pi Forums

Hi, I am using my RPi with temperature and distance sensors. Yesterday I rewiring some PINs ( RPi was turned ON while rewiring ) . I dropped one wire and It fell on another wire. In that moment RPi turned OFF. I was trying to turn it ON again +- 5 times but without success. After hour i tried it once more. It booted and on first look everything was OK. But it wasn't. I noticed bigger CPU usage and temperature in idle state. 66°C only with tightvncserver running. For example before that accident starting file manager shows 0% CPU usage. Now it shows 25%. ... When i connect from my computer on Pi's IP ( apache2 ) CPU usage grow up on 25% and after few seconds to 100%(85°C ! with passive CPU cooler) ( before accident +-2% ) and this CPU usage keeps until I shut RPi down even If I cancel connection...

I also noticed that red light is sometimes blinking and than light goes out ...



Did I broke my Pi ?

Or is there some way to repair it ? I think there is not

Thanks , and I am sorry for my bad english

It looks like you're going to be down by $35 very soon.
If anything gets very hot very quickly that's an indication it's dying.

There is no way to repair it. And even if there were it's not economical to do that for a $35 machine.

I dropped one wire and It fell on another wire. In that moment RPi turned OFF.

I stopped reading after that. Yep you fried it.

I have heard it said that it is possible to "pop" the poly fuses on the Pi in such an accident and that they will heal themselves given a day or two. You may be lucky still.

drekthrall , i have the same problem. I connected wrong pin with GPIO Rpi when i tested display lcd, i heard only squeak and immediately i turned off rpi2. Later Rpi2 normal started, but temperature goes in first 20 seconds to 70 degrees Celsius , and more ! How can i help my rpi ? some fuses or resistor ?
P.S . sorry for my english!

Agentkubus wrote:Later Rpi2 normal started, but temperature goes in first 20 seconds to 70 degrees Celsius , and more ! How can i help my rpi ? some fuses or resistor ?

There is no way to repair it. And even if there were it's not economical to do that for a $35 machine.

recycle the RPi and get a new one -
next time don't play with the GPIO headers when it is all plugged in
+5V on the GPIO will kill your RPI

Ok guys , thanks for reply. Im using this plate


and this module to conect



and this power the plate



how can i protect my RPi ? not giving power from RPi , only from power plate ? Be careful to not connect GPIO pin to power line (red) on the plate ( by accident ) ?

Let me tell you a story....

I was once doing a job in a factory that made magnetic tape. The whole factory floor was a clean-room. Dust was carefully controlled and everyone in the room had to wear white paper coveralls from head to foot. We were installing a monorail in the ceiling space that fetched the finished tape in huge reels and put it in an automated store. When a worker unloaded a tape from the machine or wanted to load one onto the machine that cut it up and put it on spools, they pressed a button on a box. A light would light up to say the computer knew that they were waiting and that a trolley was on the way. In that box there was a circuit board and on the bottom of the circuit board there was a row of screw terminals to connect to the buttons and the lights, and the signals from the computer. The lights and buttons worked on 24V and the logic worked on 5V. The terminals were about 0.2 inches apart -- twice the distance they are on a Raspberry Pi.

One day I suspected that one of the boards had failed. So I put on my white paper coverall, with the white paper booties and the hood, and I took a screwdriver, a meter and a spare board into the clean room. Sure enough, the board had failed. I was then faced with a conundrum. Do I go back outside, take off the white paper coverall, switch off the power, put the coverall back on and come back inside? Or do I just trust that I know what I am doing and which wires are the dangerous ones, and I can be very careful not to touch something I shouldn't with a wire that I shouldn't? I was young and confident, so I'm sure you can guess which option I chose.



The top of the chip cut my cheek as it went past. The legs are all bent up because I kept it in my wallet for several years as a reminder not to be such an idiot.

Fortunately that was the only component to be damaged and I could swap the chip out of the old board. But I switched the power off first.

What an excellent story.

Back in the day we did all that blowing up parts as teenagers in school. I have no idea what kids in school do now a days.

Mind you, that did not stop us blowing things up professionally later in life