How I fixed 3M Peltor ComTac Headset Shorted LTC3525-3.3

iTCXreme PC (UK) Northwest, Manchester. Computer and Electronic repairs
Email: [e-mail]

[@enriquefuentes7697]

My peltors were working about 4 months ago. I used them at the range with my army unit and when I tried them on about a week ago they wouldn’t turn on. I am always very bad at turning them off after use. I replaced the batteries and nothing, do you have any ideas?

[@TheAustrianAvenger]

how did you remove this conformal coating? I need to change the pin-out of the J11 plug, but I'm kinda afraid of breaking something.

[@ProjectZenOfficial]

Hey, can you tell me what the symptoms of those broken Peltors were? I'm at a loss with mine, I've had them in my slightly dump basement for a while, took em upstairs, turned them on and they said "Power On, Low Battery" after which they turned off again. At first I figured it might be the battery, but after trying it a few more times with new batteries it still persists. Took them apart, cleaned them with contact cleaner but they still do the same thing 🙄 I'm at a loss..

[@sovietbudgie7436]

Mine are doing this too! Would love more insight on how to fix them

[@flowfeatcrash]

I have the same problem, did you find a solution? I have two pairs that do the same thing. The only way to keep them on is by keeping the button pressed. As soon as I lift my finger it says low battery and turns off.

[@minebuzz3953]

Do you know what the capacitor on these headsets look like? I've been trying to find what part it would be but can't figure it out.

[@xy8490]

Sorry, I didnt get what dc-dc step up you used, the 3.3 V like in the headline? In the video it sounds like you take the 5V. My V on Vout is 1.5V that seems very low, so I guess thats why my peltor won't start up anymore. How do you get rid of the coating?

[@iTCXtreme]

Coating removed using hotair set around 100oc

[@ictrepairs6963]

If my eyes don't fail me you definitely have a circular mark on pin one on both components, don’t you? The image wasn’t sometimes clear due the light reflection you get on the microscope. I was able to better see it when the component wasn’t perpendicular to the microscope optical axis. I really deserve new glasses otherwise…🤓

[@iTCXtreme]

I believe you are correct. There seems to be a mark under "L" arrow pointing downwards. But the data sheet doesn't show anything???

[@ictrepairs6963]

@@iTCXtreme could happen, they probably give it for granted, the pictures on the ds it’s more related to the pinout not the packaging I guess…

[@Triple259772]

Do you offer this service as a business? I think my pair suffered from the same outcome

[@iTCXtreme]

Hello, yes, I do offer services as a business. Please visit the website " www.itcxtreme.com " and my contact details are available. Thank you.