UPDATE:
So i got my repaired TM, didnt try it yet but im almost sure i got the new board. here's why.
When i turn on the device before i had the 4 vibrations (new bat) and red lights only, now before the red lights i get a green one so i suppose now TM "tells" the calibration level/colour that the device is currently on? Im i assuming this correctly or is there other explanation?
The other difference i found is that the contact on the board is higher so now the bat cover needs a bit more of tightening but apart from that everything looks the same.
I asked to be informed on what was the problem, if i get it from TM i will leave comments.
Cheers