Question about Motorola Talkabout T5420 (14 Channels) 2-Way Radio

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Unit won't turn on. Battery indifferent.

Motorola T5420 premium walkie talkie: One radio turns on, the other won't. Swapping batteries did not change anything.

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  • Bob Taylor
    Bob Taylor May 20, 2009

    I bought these phones at a yard sale for $2.00, One phone powered up, the other did not. Of course the first thing you think is battery; right? Interestingly swapping the battery with the working phone made no difference, the unit still would not turn on. After a close inspection, I noticed variation in the way and the shape in which the battery contactors were bent to make contact. I used a small knife point and re-shaped the contacts into more of a vee shape, just like the ones on the working unit, I replaced the battery and the unit still did not turn on. I tried swapping batteries again and whala! the unit powered up and worked perfectly. (accidently hit enter. Sorry, the post above was not edited or completed) So not only was a battery non functional, the contact tabs were not making full contact with the battery. I found two new 1400mAh batteries online for $30.00. Total invested = $32.00 with batteries that last twice as long. I believe this was a result of the radio being dropped.

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I bought these phones at a yard sale for $2.00, One phone powered up, the other did not. Of course the first thing you think is battery; right? Interestingly swapping the battery with the working ohone made no difference, the unit still would not turn on. After a close inspection, I noticed variation in the way and the shape in which the battery contactors were bent to make contact. I used a snall knife point and re-shaped the contacts into more of a vee shape, just like the ones on the working unit, I replaced the battery and the unit still did not turn on. I tried swapping batteries again and whala; the unit powered up and worked perfectly,

Posted on May 20, 2009

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Hello rixonsusu,

In situations where one radio cannot talk to another radio the problem is often caused by improper setting of the radio's Continuous Tone Coded Squelch System (CTCSS), which Motorola calls "Privacy Codes." (Other manufacturers might use different names, such as Kenwood calling this feature "Quiet Tones.")

When CTCSS is activated your radio's receiver will be muted unless the radio receives a signal from another radio using the required Privacy Code. This prevents you from having to listen to other user's conversations on what can be busy channels with a lot of activity.

In one of your radios has CTCSS enabled and the other does not, or if the other radio is set to the wrong CTCSS tone, the situation you describe will occur: one radio will be able to talk to the other, but that radio will not be able to talk back.
Make sure both of your radios are set to the same CTCSS privacy code or that CTCSS is turned off on both radios.
Best Regards,

Agent Ken
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