Greetings to all readers!
This 6GHz sig gen is functioning properly in every way, except for apparently intermittent operation of the ON-OFF button and associated electronics.? When the button is pressed, sometimes the sig gen starts immediately, whilst on other occasions the amber and green LEDs oscillate "...green-amber-green-amber..." and so-on at about 2 Hz until the machine eventually does start.? The length of time the LEDs spend oscillating in this way is unpredictable, from just a couple of seconds to, say, two minutes.? In the end the sig gen does eventually start, but obviously something is amiss and should be attended to.
I believe that the occurrence of this intermittency is more frequent when the atmospheric humidity on the day is greater than usual and, in that I am located in sub-tropical Brisbane, Australia, this effect is becoming more bothersome at this time of the year.? (I am not having any problems with any of the other soft-touch buttons on the front panel.)
Page 1-57 of the Service Manual mentions these green and amber LEDs, but does not reveal much more.
My intuition is that some dirt has built up in the high impedance electronics associated with the operation of the ON-OFF button and that as soon as the touch of the button is detected, either the 'switch off' sequence is also initiated, or some sort of high impedance short to somewhere is also detected, aborting the switch-on process.
Has anyone had this type of problem before?? Can anyone please suggest a solution?? All replies will be greatly appreciated!? Thanks in anticipation....
--Doug Friend, VK4OE.
DougF VK4OE