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Radio shuts down when using remote ON switch

Henkka
Henkka Member ✭✭
edited December 2025 in Remote Operation (SmartLink)
I have had experienced strange behavior when using my Remote On Plug and Play Kit (MHCOZY TYWB 4CH smart switch) with my Flex-8600M.

If I'm only running my radio all works good, I can power my radio ON and OFF no problem and also my radio stays on. But when I have all my other Flex gear on (PGXL, TGXL) then radio shuts down himself after 3-6minutes. Can't figure out what causes it.

It's not RFI problem because it also happens if gear is just running idle not transmitting or anything. Switch itself also seems to be fine, if it's not connected to the radio it stays on without any problem. I have checked the switch connections and power cables and all seems to be in mint condition. Radio has also steady supply of power with proper voltage.

Im using proper steps when powering on my gear and waiting few minutes between the steps, so that should be not the case either. When I remove the RCA plug behind the radio problems go away, so radio seems to work fine. I have also tried to downgrade the radio firmware to earlier versions, but same happens with v3.9.19.

Has anyone else had similar challenges? Any tips how I can solve this would be much appreciated.

Flex-8600M Firmware v3.10.10.38187
PGXL Firmware 3.8.9
TGXL Firmware 1.2.17

Best regards,
Henkka, OH5KNL

Comments

  • Henkka
    Henkka Member ✭✭

    Problem solved. Switch died, don't work at all anymore. So that must have been a switch related hardware issue. Good it happened today and not when working remotely somewhere. Will order new one from Amazon.

  • Flexed
    Flexed Member ✭✭

    When you say “switch,” are you referring to the RemoteOn? If so, I’ve changed mine twice in less than a year, and I’m not sure why they go bad so quickly.

  • Henkka
    Henkka Member ✭✭

    Im refering to MHCOZY TYWB 4CH smart switch. Yeah they seem to be low quality. Mine was sitting behind the radio at the cable conduit, there were no mechanical impact or like to make damage. Dont know how they can withstand RFI.

    More reliable switch (not made in China) would be much appreciated.

  • Geoff AB6BT
    Geoff AB6BT Member ✭✭✭

    Try https://ncd.io/

    Products

    Relay Controllers (on the left)

  • Henkka
    Henkka Member ✭✭

    Good deal thanks Geoff

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