[werk_ag]

Hi here is my tx test as you asked for hop this will suffice as I was not able to copy and paste from arduino.

That file it's only garbage, it's useless.. When you open the serial monitor window, you must select the same baudrate (bottom right) as defined on the software.
For copy/past don't use the mouse, use standard keyboard shorcuts.

Hi, one more point that I think I should make you aware of is that the voltage regulator does not get hot anymore as it used to, when the power supply is connected, could that be a sign that it is not working anymore ? the TX led still flashes though.

Unless you have a big fan always on (fan led must lit), the power regulator never gets hot. Please check all your solder joints, try finding any short circuit, on any defective part.