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QMX (20-10, 1_00_017 fw) RIT dissapeared


 

Hello,
Can not switch on RIT after two days of normal CW operation at 17&15 meters. Short and long press of left knob are OK only double click has no any effect. Double click works well at right knob and both encoders. Factory reset did not help. I suspect some?problems with the contacts, it looks like the button will have to be replaced. I would appreciate other suggestions.
73
Igor oh2jxa


 

I'm having the same problem with my QMX as well. Is there a setting I'm overlooking?

Don WA2SWX

On Sat, Mar 9, 2024 at 10:55?AM <oh2jxa@...> wrote:

Hello,
Can not switch on RIT after two days of normal CW operation at 17&15 meters. Short and long press of left knob are OK only double click has no any effect. Double click works well at right knob and both encoders. Factory reset did not help. I suspect some?problems with the contacts, it looks like the button will have to be replaced. I would appreciate other suggestions.
73
Igor oh2jxa



--
73

Don Meyerhoff
WA2SWX


 

Have you tried reflashing the firmware to see if it is just a software glitch?


 

Yes. No luck. I saw an earlier post where one person found bad solder flows on pins 92 and 93 of the MPU and reflowed them and it worked. I'm going to check to see if that is the case with mine.

73 Don WA2SWX?

On Sun, Mar 10, 2024, 7:31?AM Eric <emfell@...> wrote:
Have you tried reflashing the firmware to see if it is just a software glitch?


 

Continuation of a story. After the sudden strange disappearance of the ability to turn on the RIT, returning to factory settings and reаflashing the firmware did not help. Checking the resistor and conductivity of the line from the button to the processor did not show any problems. An unclear situation, short and long presses work, as they should, double click - no reaction. When I increased the click time from 300 to 500 ms, I was able to turn on the RIT after 3 attempts. Now the RIT turns on after 3-5 or more attempts, better than nothing :) The next step is replacing the button. I plan to connect another button in parallel to the questionable one for testing, but that will happen in a few weeks.

73
Igor oh2jxa


 

Dbl.click 300 - no reaction, 500 - works after 3-5 attempts, 600 - switch RIT on immediately. It was not so before, 300 was OK.

73
Igor oh2jxa