Is my raspberry unrepairable?

You have most lightly blown something on the PI

The 4.3V battery should NOT have been connected between the 3.3V pin and the 5V pin, these are both seperate power + rails for parts of the PI board and you just put effectivly 8V into the 5V pin or caused excessive current to flow through pins not designed to have a difference of the battery or booster voltage.

What you should have done is connect the batter or booster output to 0V for the black wire and 5V for the red one (Using the booster to give you the 5V

you best option is actually to feed the 5V into the PI via the USB connection though, so battery to booster, booster to PI USB power connector

the schamatics have not been published but based on your description of how you connected a battery capapable of providing many amps between the 3V3 and 5V pins I would expect something to have failed

Sorry for the bad news, may the PI RIP.

Peter

So I cannot replace anything (nothing has physical damage except the pins, so I thought I may be able to replace them or even replace the led xd)? And one more question how can I put the black cable to 0v (because both cable where fused with the + and - of the boost output) ?

Thank for the fast responding! :O

I have done something simular by accident, the Raspberry isn't repairable. I use mine to show people what they look like. At least I don't worry about them dropping it. Sorry about the misfortune...

The damage will not be visable, the pin that is marked is irrelevent, it would still work if thats all that was wrong, same for the LED

the LED not working is symptomatic of the CPU or other significant part being damaged and with out schematics and the like, pretty imposible to repair for most folks and certainly not economically viable

When plugged in does the processor get real hot?  If so, the processor is burned up from the power mixup.  Like  Peter Oakes says, fixing wouldn't be economically viable. As well, what happens when you plug in the Raspberry without An sd card?

As a note, when I ran my Raspberry by battery I created a battery pack that I attached to a micro usb plug. This way you just plug it in as normal. Works great.

When unsure, it's always a good idea

Enrico

I just let it sit for about 15m and it's at normal warm. Also is not only the processor that gets hot, the board does too, but mostly where the micro usb port is. When I remove the micro sd card it gets hot at same temperature (maybe a little less), but again no led turn on or whatsoever.

Hi Mauricio,

The warmth near the microUSB is a sign that something serious is wrong, because it means either the rest of the circuit is drawing excessive current (due to blown chips) or that the DC-DC converter chip which is located near the micro-USB connector

is faulty. Either way, the parts are tiny (about 0.4mm separation between pins, and often the pins are on the underside) and most people don't have the tools to remove and replace them (and if they do, they charge around $75USD for soldering one part - and

no idea how much to desolder and clean up the board of the existing one).

By wiring directly to the 40-pin connector, any (little) protection the Raspberry Pi has was bypassed. Because the supply connection was made to 5V and 3.3V rails, there is a very high risk the DC-DC converter chip has fried itself, another sign of this is the sparks you saw

on the connector pins - it means a lot of current went through.

In summary, the entire board has to be replaced. I didn't read the entire detail, but if your power LED is not functioning then that near-guarantees that the DC-DC converter IC (or parts near it) have died, and they are not economically replaceable.

Not the news you want to hear, but at least by reading the comments you've learnt the technical details about what could have occurred. As a beginner, after the first board or two, you'll be fine - experience means you won't trust all instructables etc., and will take

some precautions such as double-checking pinouts.

Thank you!