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Old 10-14-2017, 8:40 PM
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Default AR8000 odd behavior

My trusty 8k began acting strangely when it quit responding to button presses. A while back, I had re-coated the buttons’ carbon contacts and so I had no reason to suspect them. Also, I was able to reset the radio using the special key combination accompanying a power cycle. But now that I’ve done the reset, the radio is stuck on the VFO 1 & 2 screen.

Has anyone experienced this before?
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Old 10-15-2017, 6:24 PM
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I don't recall but wasn't it a flex cable going from the keypad to the main board? Then it could be a crack in the flex or a connector crimped to it. Use a continue tester and flex that cable and if the connection is intermittent you could solder some wires to bridge the bad connection.

/Ubbe
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Old 10-16-2017, 6:44 AM
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I opened up the radio, but didn’t find any flex cable. I did, however, see that most of the conductive paint that I’d applied to the back of the SCAN button had worn off, leaving chips. I’ll let you know how a new Caikote 44 application works.
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Old 10-16-2017, 1:07 PM
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I would guess that the chips could short circuit the button and render the whole keypad useless.
Try using copper tape and cut out a piece that fits to the button. I have fixed hundreds of worn out buttons that way.

/Ubbe
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Old 10-19-2017, 3:41 PM
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Ubbe, just like you said, some old Caikote 44 had rubbed onto the labyrinth looking metal contact on the pcb. Once I gently scraped this away, the buttons functioned again.

Thanks
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Old 01-11-2018, 3:27 PM
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Check to see if one of your buttons might be sticking.
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