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This problem is typically caused by small component behind the PTT button being cracked or broken. The RDX series radios respond best if the user presses the PTT button in the center versus the top or bottom sections of the button. Once the button becomes hard to press it is best to get the radio repaired. Commonly if the radio remains in use the PTT issue will get worse as the internal PTT component is pressed harder, pushing it further away from the outside button and eventually loosening it from the component board.
If the push to talk button is damaged. You will need to disassemble the radio to get to the circuit board. The PTT is usually surface mount soldered to the board. You will need silver electronics grade solder, a flux pen, a solder sucker or solder wick, a replacement PTT, a soldering iron 25 watts or greater, screwdrivers to match the screws in the casing during disassembly, a table mounted vise to hold the circuit board during repair/ soldering, a very fine grit sand paper to remove any oxidation off the terminals of the PTT for a perfect solder connection, and probably a magnifying glass to inspect the new solder connection with the PTT to the circuit board.
Most of the soldering tools can be purchased at radio shack.
if you have no experience soldering, I recommend going to YouTube and watch the videos posted on DIY soldering to get a good understanding of the whole process from start to finish. There is a huge amount of informational videos on the subject there. I could sit here and try to explain the whole process and why but as the saying goes a picture is worth a thousand words (but a video is worth a million ).
The PTT button is one of the common failure parts. It is replaceable, but best done by an experienced repair center.
The following things can happen over time:
1) The internal PTT switch can wear out from frequent usage.
2) The user begins to press harder to get the PTT to work, bending the PTT switch further away from the external button the user is pressing.
3) Plastic diaphram, if any present, gets broken in half, and the external PTT switch doesn't work anymore.
Several companies offer flat rate repair on this style unit for around $85.
easy just get a safty pen and a drop of superglue and run it in the crack of the ptt button let it get hard then u have solveld the problen id and my samsung rugby 2 works fine i don't have to worry about every time i go to open my phone that dam ptt message
From what I have read, there is no setting to disable the PTT
If you don't plan on using your PTT in the future.
Look for the PTT button on the left side of the phone.
Take a pin slide it under the button and pop it off.
On the back of the button, there is a little tab.
Take a nail clipper and shorten the tab just a bit.
Snap the button back on the phone.
With the tab shortend, the PTT will not activate when pushing or hitting the button.
Stick your fingernail or a thin blade between the button cover toward the front side of phone. Pry it out just like would the charge port cover. Cut off the protruded part of the button cover (this is the pusher stick that activates the real button), and then press the button back in place.
Now the button is no more but looks functional, the only caveat is that if you suddenly decided you want PTT to work, your button is dead unless you can aquire a new button cover somehow.
A couple of things you can try: 1. Use electronic contact cleaner (spray type) on the PTT switch; 2. Use an external speaker/microphone and/or handsfree VOX headset 3. Replace the PTT switch. 4 solder points. Might not be easy but doable.
The last would require that you remove the defective PTT switch and use that as per sample when looking for replacement. Some printers uses the same type of switch. Familiarity with electronic components/circuitry, use of a DVM and a soldering iron would also be required.
Hope this be of some idea/help. Pls post back how things turned up or should you need additional information.