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Push to talk switch

larrynimmo

By larrynimmo
in General Mooney Talk

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Yetti Grand Master

Yetti

Posted
Posted
2 hours ago, larrynimmo said:

My pilots push to talk switch has become intermittent...can it be cleaned? Best place to get replacement?

My computer is broke.    Oh really can you be a bit more descriptive about "broke"

I have heard it said pictures tell a thousand words.

How do you know it is the switch and not a loose ground?

Does the copilot PTT work?

Maybe it is the ground to the audio panel.  What kind of audio panel do you have.

N201MKTurbo Grand Master

N201MKTurbo

Posted
Posted

Digikey has the exact replacement. The part number is in the parts manual.

Before you go to all that trouble, spray some contact cleaner down the button shaft and push it a zillion times and see if it gets better.

  • Like 1
Yetti Grand Master

Yetti

Posted
Posted
42 minutes ago, N201MKTurbo said:

Digikey has the exact replacement. The part number is in the parts manual.

Before you go to all that trouble, spray some contact cleaner down the button shaft and push it a zillion times and see if it gets better.

Contact cleaner has been known to cause cancer in rats in Baltimore

  • Like 1
  • Haha 2
N201MKTurbo Grand Master

N201MKTurbo

Posted
Posted
1 hour ago, Yetti said:

Contact cleaner has been known to cause cancer in rats in Baltimore

But it works so good at getting that old crusty heroin out of their syringes. 

  • Haha 1
larrynimmo Experienced

larrynimmo

Posted
  • Author
Posted
20 hours ago, Yetti said:

My computer is broke.    Oh really can you be a bit more descriptive about "broke"

I have heard it said pictures tell a thousand words.

How do you know it is the switch and not a loose ground?

Does the copilot PTT work?

Maybe it is the ground to the audio panel.  What kind of audio panel do you have.

First off...Copilot PTT works perfectly.  Audio panel is original King, intercom is David Clark.

when you operate the co-pilot side, there is a solid TX on Garmin GTN-650.  When you operate from the pilot side, the TX is intermittent.

Yetti Grand Master

Yetti

Posted
Posted

Well then let's go with switch or wiring to the switch.   a $2 contact cleaner can from wallyworld might fix it and won't hurt anything.  Sometimes people can wire in a PTT from the headset so that might be the wiring.  Also take a quick look at the wires coming out of the back of the yoke and make sure someone did not get a foot into them.

Hank Grand Master

Hank

Posted
Posted

When I have problems, it's usually in the jacks. Reach under the panel and make sure the contacts touch the right parts of the plugs.

skydvrboy Mentor

skydvrboy

Posted
Posted

When mine went intermittent and subsequently failed, it was from the wire being pulled off the terminal and had nothing to do with the switch.  Not saying that is your problem, but I had the same symptoms, so something to check.

  • Like 1
RLCarter Grand Master

RLCarter

Posted
Posted
1 minute ago, Austintatious said:

Is anyone elses PTT as sharp as a needle?  I am about to 3d print a cap to make it less painful to transmit.

:) when the little cap falls off on some of the switches it is a pain, had a Cessna like that, didn't take long to get a replacement installed

Yetti Grand Master

Yetti

Posted
Posted
13 minutes ago, Austintatious said:

Is anyone elses PTT as sharp as a needle?  I am about to 3d print a cap to make it less painfull to transmit.

It's designed that way to keep your transmissions brief and to the point.

If it's the itty bitty one you can buy another one and transfer the cap.   Not as fun as 3d printing.

  • Haha 1
carusoam Grand Master

carusoam

Posted
Posted

Plenty of new cap styles to select from, commercially...

There is a thread around here for that... 

It may help to know what switch was used... it may be a standard...

Best regards,

-a-

larrynimmo Experienced

larrynimmo

Posted
  • Author
Posted

update....replaced switch with no joy....traced out wiring and found wire had fractured just above a solder point where the wire was soldered to the phone jack...and there was a second wire on the phone jack that was down to a single strand and it broke off when I touched it....

Yetti Grand Master

Yetti

Posted
Posted

Means you have a PTT wired into the phone jack.   I'd have to look at a diagram, but the extra "ring" is designed to be PTT of a headset.

larrynimmo Experienced

larrynimmo

Posted
  • Author
Posted

on my plane two wires go to the PTT...the white wire goes to the power end of the headphones (center) ....the brown wire goes to the jack where the plug in microphone is hooked up.

  • 4 years later...
PT20J Grand Master

PT20J

Posted
Posted
23 minutes ago, DanM said:

I believe it should be the momentary version: MPA106F, not the "push on/push off" version.  Correct?

My M20J uses a Electroswitch SA1RV20 with a SW53AA2 button. Mouser had stock in 2021.

  • Like 1
  • 11 months later...

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