I have programmed an MX-900 using a Teac UR-592B remote control handset, for use with a Teac A-R610 amplifier, however there is a problem with the Vol+ and Vol- commands:

• Pressing the Vol+ and Vol- buttons on the MX-900 has no effect.
• Clicking on the "Test" icon for Vol- in the MX-900 editor causes the MX-900 to send a Vol- intruction to the amlifier, and the volume is reduced.
• Clicking on the "Test" icon for Vol+ in the MX-900 editor causes the MX-900 to send a Vol+ intruction to the amlifier, and the volume is increased - but only on alternate times. (ie. the first click works, the second click doesn't work, the third click works, the fourth click doesn't work, and so on).

I am guessing that the issue may have something to do with forcing the MX-900 to continue to transmit the code for as long as the button is pressed, but I do not know how to maket this happen for a "learnt" code.  I have been unable to find any codes specific to the UR-592B or to the A-R610, and none of the codes for the Teac devices (whether generic or specific) in the MX900 Editor's IR Database Navigator work.

Any help would be greatly appreciated.