Cant do anything with the board

[DiogoPedrosa]

I'm a new user working with a Nucleo F103RB board, and it suddenly stopped working. I can't program, debug, perform a chip erase, or access any sector. It began showing vFlash errors and is now stuck in a lockup stage. I've attempted to upload a different project with no success, and I've also tried a full chip erase, which failed. Additionally, it has entered read protection mode, preventing me from reprogramming the RDP using any other IDE or programmer utility.When i try to change the RDP in cube programmer it shows a error cant read data and the board disconnects itself. Is it a hardware problem?If so I could solder a new microcontroler in the nucleo.

 

[SofLit]

I think (unfortunately) your device is broken.

[DiogoPedrosa]

Soldering a new micrcontroler could fix this issue? We have some extra chips.

[Andrew Neil]

Only if the only fault is in the microcontroller, and your soldering skills are good.

As a beginner, it would probably be better to get a new board - then you know you're starting with good, working hardware.

After that, having gained experience and with a known-good board as reference, you could consider whether it's worth attempting to repair the first board ...

[SofLit]

@Andrew Neil indeed!

[DiogoPedrosa]

I´m working with people more experiencied in soldering and dealing with the STM products,ill ask them to take a look and maybe resolder the microcontroler.We checked the st link from the board and it was working.

Anyways,what could have caused this problem?

[MM..1 · Accepted solution]

You never show this

to you dont write if try slow down speed STLink from 4M for example to around 400k

Next choices is aplicaction note AN2606 switch MCU boot to DFU and use USB or USART , and yes last choice replace MCU.

[DiogoPedrosa]

Well that worked ,lol. With 480k I could reprogram everything and now its working. Why did this happen? 

Also where was I supposed to switch the MCU boot do DFU?