diff -r 2392f7402fb6 -r d92bacc2116e Hardware/TBalancer/TBalancerGroup.cs
--- a/Hardware/TBalancer/TBalancerGroup.cs	Fri Feb 12 00:36:56 2010 +0000
+++ b/Hardware/TBalancer/TBalancerGroup.cs	Fri Feb 12 08:17:51 2010 +0000
@@ -59,11 +59,9 @@
           serialPort.Open();
           bool isValid = false;
           byte protocolVersion = 0;
-          if (serialPort.IsOpen && serialPort.CDHolding &&
-            serialPort.CtsHolding) {
+          report.Append("Port Name: "); report.AppendLine(portNames[i]);
 
-            report.Append("Port Name: "); report.AppendLine(portNames[i]);            
-
+          if (serialPort.IsOpen) {
             serialPort.DiscardInBuffer();
             serialPort.DiscardOutBuffer();
             serialPort.Write(new byte[] { 0x38 }, 0, 1);
@@ -72,34 +70,39 @@
               Thread.Sleep(100);
               j++;
             }
-            if (serialPort.BytesToRead > 0 &&
-              serialPort.ReadByte() == TBalancer.STARTFLAG) {
-              while (serialPort.BytesToRead < 284 && j < 5) {
-                Thread.Sleep(100);
-                j++;
-              }
-              int length = serialPort.BytesToRead;
-              if (length >= 284) {
-                byte[] data = new byte[285];
-                data[0] = TBalancer.STARTFLAG;
-                for (int k = 1; k < data.Length; k++)
-                  data[k] = (byte)serialPort.ReadByte();
+            if (serialPort.BytesToRead > 0) {
+              if (serialPort.ReadByte() == TBalancer.STARTFLAG) {
+                while (serialPort.BytesToRead < 284 && j < 5) {
+                  Thread.Sleep(100);
+                  j++;
+                }
+                int length = serialPort.BytesToRead;
+                if (length >= 284) {
+                  byte[] data = new byte[285];
+                  data[0] = TBalancer.STARTFLAG;
+                  for (int k = 1; k < data.Length; k++)
+                    data[k] = (byte)serialPort.ReadByte();
 
-                // check protocol version
-                isValid = 
-                  data[274] == TBalancer.PROTOCOL_VERSION_2A ||
-                  data[274] == TBalancer.PROTOCOL_VERSION_2C;
-                protocolVersion = data[274];
-                if (!isValid) {
-                  report.Append("Status: Wrong Protocol Version: 0x");
-                  report.AppendLine(protocolVersion.ToString("X"));
+                  // check protocol version
+                  isValid =
+                    data[274] == TBalancer.PROTOCOL_VERSION_2A ||
+                    data[274] == TBalancer.PROTOCOL_VERSION_2C;
+                  protocolVersion = data[274];
+                  if (!isValid) {
+                    report.Append("Status: Wrong Protocol Version: 0x");
+                    report.AppendLine(protocolVersion.ToString("X"));
+                  }
+                } else {
+                  report.AppendLine("Status: Wrong Message Length: " + length);
                 }
               } else {
-                report.AppendLine("Status: Wrong Message Length: " + length);
+                report.AppendLine("Status: Wrong Startflag");
               }
             } else {
-              report.AppendLine("Status: Wrong Startflag");
+              report.AppendLine("Status: No Response");
             }
+          } else {
+            report.AppendLine("Status: Port not Open");
           }
           serialPort.DiscardInBuffer();
           serialPort.Close();
@@ -115,6 +118,7 @@
         } catch (NullReferenceException ne) {
           report.AppendLine(ne.ToString());
         }
+        report.AppendLine();
       }
     }
 
@@ -127,8 +131,7 @@
     public string GetReport() {
       if (report.Length > 0) {
         report.Insert(0, "Serial Port T-Balancer" + Environment.NewLine +
-          Environment.NewLine);
-        report.AppendLine();
+          Environment.NewLine);        
         return report.ToString();
       } else
         return null;