Help in debugging POR issue with serial monitor

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memotick:
I looked at putty and a few others on the web, but haven't found anything that looks promising.

Have you actually tried any? PuTTY, for example, definitely enables you to access a serial port.

If you choose to write your own it would need a few lines of code to open the port, read from it and echo what you read to stdout, and the code would be broadly similar in VB, Java, C# etc. In C# it would look something like this:

            SerialPort _serialPort = new SerialPort("COM8", 9600, Parity.None, 8);
            _serialPort.Handshake = Handshake.None;

            try
            {
                _serialPort.Open();
            }
            catch (Exception e)
            {
                Console.WriteLine("Open failed: " + e);
                return;
            }

            while (true)
            {
                try
                {
                    string sample = _serialPort.ReadLine();
                    Console.WriteLine(sample);
                }
                catch (TimeoutException) { }
            } // end while

I doubt you actually need to resort to writing your own client, but if you need to then the code would be pretty simple.