N900 strange behaviours
 

Hello there. I am in need of help. I have two N900 and in one of them i had the GSM problem that i personaly fixed. Two things hapen on this device. It only starts with two of the 6 batteries i have and it overheats the battery never reaching 100%. The other strange behaviour is that after i remove the USB cable the battery drains in one or two minutes.
Can this be something related to bme? Shouldn't reflash solve this?
Thanks

PS: USB port was resoldered a few years ago. I reflashed it twice but always hapens

Re: N900 strange behaviours
 

Sounds more like a (serious) hardware problem.

Re: N900 strange behaviours
 

Is the soldering done properly for usb port so that there are no unwanted circuit connections?

Re: N900 strange behaviours
 

It seems so but i am wondering if something is wrong. Read Somewhere that bme sometimes does not reset even after flashing

Re: N900 strange behaviours
 

Have you tried only in one order the flashing or with others too? I needed to play couple of times with different order to get it done. Once it booted with red squares the whole screen full while trying those but reflash fixed it and now works properly. I have couple of N900 so didn't mind if it would broke though.

Re: N900 strange behaviours
 

What do you mean about the right order? Always flashed the same way including my other n900. I am considering that the batteries i have are not in very good condition. Once the "damaged" one showed low battery and turned off i tried that battery on the other One. First it showed 30% and sudenly turned off with 0%

Re: N900 strange behaviours
 

How can i make a propper bme reset?

Re: N900 strange behaviours
 

Find the heat source..
Get a dual-use thermal camera.
Become the louis rossmann of the N900 community!
https://www.youtube.com/watch?v=FLSO0D67lOA#t=01m45s

If you get one you can help check where Leste is loosing the 80ma of sleep/idle current. [So it is dual-use technology. Because it has to be split your framerate will be low.]

(your finger tip might work as well, propably not for 80ma)

Re: N900 strange behaviours
 

I can tell that the battery gets very hot

Re: N900 strange behaviours
 

So your Battery seems to work.. but discharges a little too fast..
I would not run it with battery in this state.
Look for an equal hot spot on the pcb.
Since you have two devices (and your fingers can feal heat) you can even compare heat between them.
But honestly fixing might get complicated, if you cant spot something simple and obvious.
How did you fix gsm? reflow, reball, new chip, springs?