larrynimmo Posted July 31, 2019 Report Posted July 31, 2019 My pilots push to talk switch has become intermittent...can it be cleaned? Best place to get replacement? Quote
RLCarter Posted July 31, 2019 Report Posted July 31, 2019 Not sure if it can be cleaned, but FWIW if you find a replacement make sure it is a momentary nominally open switch Quote
Yetti Posted July 31, 2019 Report Posted July 31, 2019 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. Quote
N201MKTurbo Posted July 31, 2019 Report Posted July 31, 2019 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. 1 Quote
Yetti Posted July 31, 2019 Report Posted July 31, 2019 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 1 2 Quote
N201MKTurbo Posted July 31, 2019 Report Posted July 31, 2019 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. 1 Quote
Philip France 13 Posted July 31, 2019 Report Posted July 31, 2019 You can get the replacement at Mouser electronics cost below 10$ per part. I suggest you buy two just in case of issue during mounting. Easy to replace need to be soldered with iron. Philip Quote
larrynimmo Posted August 1, 2019 Author Report Posted August 1, 2019 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. Quote
Yetti Posted August 1, 2019 Report Posted August 1, 2019 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. Quote
Hank Posted August 1, 2019 Report Posted August 1, 2019 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. Quote
skydvrboy Posted August 1, 2019 Report Posted August 1, 2019 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. 1 Quote
Austintatious Posted August 1, 2019 Report Posted August 1, 2019 Is anyone elses PTT as sharp as a needle? I am about to 3d print a cap to make it less painfull to transmit. Quote
RLCarter Posted August 1, 2019 Report Posted August 1, 2019 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 Quote
Yetti Posted August 1, 2019 Report Posted August 1, 2019 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. 1 Quote
carusoam Posted August 2, 2019 Report Posted August 2, 2019 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- Quote
N201MKTurbo Posted August 3, 2019 Report Posted August 3, 2019 I believe this is the cap for that switch: http://www.digikey.com/product-detail/en/1825068-1/450-1490-ND/1124249 Here is the switch: MPA106D http://media.digikey.com/pdf/Data%20Sheets/Tyco%20Electronics%20Alcoswitch%20PDFs/MPAxx6%20Series%20PB%20Switch.pdf Quote
larrynimmo Posted August 5, 2019 Author Report Posted August 5, 2019 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.... Quote
Yetti Posted August 6, 2019 Report Posted August 6, 2019 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. Quote
larrynimmo Posted August 6, 2019 Author Report Posted August 6, 2019 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. Quote
DanM Posted December 15, 2023 Report Posted December 15, 2023 On 8/2/2019 at 5:49 PM, N201MKTurbo said: I believe this is the cap for that switch: http://www.digikey.com/product-detail/en/1825068-1/450-1490-ND/1124249 Here is the switch: MPA106D http://media.digikey.com/pdf/Data%20Sheets/Tyco%20Electronics%20Alcoswitch%20PDFs/MPAxx6%20Series%20PB%20Switch.pdf I believe it should be the momentary version: MPA106F, not the "push on/push off" version. Correct? Quote
PT20J Posted December 15, 2023 Report Posted December 15, 2023 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. 1 Quote
hoot777 Posted November 22, 2024 Report Posted November 22, 2024 Just ordered a few little caps to pop back on my PTT - which is almost a needle w/o the little button from RS services Quote
PT20J Posted November 23, 2024 Report Posted November 23, 2024 They are supposed to be glued on with a drop of superglue or they will fall off. Just don't use too much and glue the switch shut! Quote
Pinecone Posted November 23, 2024 Report Posted November 23, 2024 I use a tiny amount of 3M 5200 to glue them on. Quote
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