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Thread: MTP3550 & MTM5400 NOT SWITCHING ON

  1. #1
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    Default MTP3550 & MTM5400 NOT SWITCHING ON

    HI everyone,

    I have a MTP3550 and a MTM5400 that are not switching on.

    I have checked the fuses on the MTM and seems to be working and when supply is connected and power on button is pressed, the on board LED flashes green then red but, the radio does not power up.
    when connected to CPS it is not detected even when trying to put it in programming mode.

    Similar to the MTP it does not turn on, but when connected onto the charger, the front LED luminate red as well as when connecting the programming cable it glows red but is not detected to the cps.

    for both radios because the LEDs turns on, that makes me to rule out the supply circuit problem. but, leaves me with the question what might be wrong.

    extra info: the radios are not stunned/disabled from the RCM of the system.

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  3. #2
    Member Reputation: 33 AnRegs's Avatar
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    5400 may require ignition sense...

  4. #3
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Quote Originally Posted by AnRegs View Post
    5400 may require ignition sense...
    I am testing it on the bench, with a 12V power supply. as mentioned when i press the power up button the on board LED flashes green and then red, before it goes off

  5. #4
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Quote Originally Posted by kideoIP View Post
    I am testing it on the bench, with a 12V power supply. as mentioned when i press the power up button the on board LED flashes green and then red, before it goes off
    Did you provided IS to the ACC (rear) connector? 3rd wire, but not the main power cord.

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  7. #5
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Quote Originally Posted by AnRegs View Post
    Did you provided IS to the ACC (rear) connector? 3rd wire, but not the main power cord.
    Yes I have connected the IS, the LED (D402) on the board keeps flashing but the radio does not turn on.

    Another info; radio was working before it went to this current status of not wanting to switch on.

  8. #6
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Hey! I had a problem like this on an mtp 3200. And the radio was permanently disabled by the tetra network signal, and it wouldn't turn on. But I managed to resuscitate it with cps depot.

  9. #7
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Thanks, I think i did some some threads on net suggesting a cps depot. The depot is different from the normal CPS? I will look for it.

  10. #8
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Yea! It has dead radio recovery tools. Good luck!

  11. #9
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    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    Hi again, I have managed to get the depot CPS, connected programming cable to the radios. would you kindly walk me through the steps or process of this recovery because i noticed that the radios are still not detected by the CPS, meaning I cannot read them since they are not switching on. Also, I only have USB programming cables not RS232.

    what do i need before starting this recovery process?
    thanks again for your response.

  12. #10
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    1 out of 1 members found this post helpful.

    Default Re: MTP3550 & MTM5400 NOT SWITCHING ON

    First, recovery is done via RS-232 cable...

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