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 help with VELLEMAN KIT

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lunchsack86


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help with VELLEMAN KIT
« on: Mar 16, 2021, 01:44 PM »
So i built and destroyed 2 of these.
a friend had a working one and let me have it GREAT!

but its super super quiet.
anyone have any ideas on how to fix it?

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LightningLion


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Re: help with VELLEMAN KIT
« Reply #1 on: Mar 18, 2021, 07:27 AM »
There are many Velleman products, please provide more info.
Which product was it?
How did you destroy them?
What speaker are you using, and what power source?

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lunchsack86


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Re: help with VELLEMAN KIT
« Reply #2 on: Mar 18, 2021, 09:50 AM »
https://www.amazon.com/Velleman-MK136-Super-Stereo-Ear/dp/B004NVVTU2/ref=sr_1_2?crid=MMZN8M53NVLC&dchild=1&keywords=velleman+mk136&qid=1616075313&sprefix=velleman%2Caps%2C230&sr=8-2

the 1st one the copper contact for one of the mics burnt off. just fell  right off the board.

the 2nd i onlyget "sound" out of the left ear but all it is is static.

the 3 is working but super quiet.  currently useing the  3 AA pack it comes with and head phones.

I know the head phones work. I use them daily at work.

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LightningLion


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Re: help with VELLEMAN KIT
« Reply #3 on: Mar 18, 2021, 10:10 AM »
Were them a DIY kit that you soldered? Because that issue with the 1st one sounds like applying too much heat while soldering. Did you use paste/flux?

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lunchsack86


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Re: help with VELLEMAN KIT
« Reply #4 on: Mar 18, 2021, 10:37 AM »
yeah i did the 1st 2 myself. and i agree the 1st is 100% too much heat.

2nd im not sure

3rd that im getting sound but absolutely quiet a friend built a while ago. I have no clue how to troubleshoot these things.
im thinking the mics are blown. but not sure

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LightningLion


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Re: help with VELLEMAN KIT
« Reply #5 on: Mar 18, 2021, 01:59 PM »
Yeah, it's kinda difficult to troubleshoot.
One option is the good ol' switcheroo: replace elements and check if it still doesn't work. Not many options without an oscilloscope.
You can also use a multimeter to check components or copper vias.

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Celtkhan


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Re: help with VELLEMAN KIT
« Reply #6 on: Mar 18, 2021, 03:06 PM »
On the second, is it static, or a buzz in the 50 Hz range? If it’s buzzing, then the microphone probably isn’t grounded properly. I had to put on quite a bit of solder to bridge the contact to the ground prong.

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lunchsack86


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Re: help with VELLEMAN KIT
« Reply #7 on: Mar 18, 2021, 03:21 PM »
On the second, is it static, or a buzz in the 50 Hz range? If it’s buzzing, then the microphone probably isn’t grounded properly. I had to put on quite a bit of solder to bridge the contact to the ground prong.

its more a buzz. ill try to re solder it too

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Jarek Tahl-Tracyn


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Re: help with VELLEMAN KIT
« Reply #8 on: Mar 18, 2021, 08:19 PM »
To mitigate the buzz/static, I bridged the terminals of both mics with a small 1uF ceramic capacitor (says 105 on the side.) It worked for me, will not guarantee it will work for you.

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lunchsack86


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Re: help with VELLEMAN KIT
« Reply #9 on: Mar 19, 2021, 04:59 AM »
To mitigate the buzz/static, I bridged the terminals of both mics with a small 1uF ceramic capacitor (says 105 on the side.) It worked for me, will not guarantee it will work for you.

Any chance you can send me a picture of this?

this is all greek to me lol.   I work IT and it kills me not to know how to troubleshoot this properly lol

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Jarek Tahl-Tracyn


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Re: help with VELLEMAN KIT
« Reply #10 on: Mar 19, 2021, 08:20 PM »
Any chance you can send me a picture of this?

No. I sold that helmet off last year. It's simple though, on the terminals that come out the back of the mic, solder the cap across the leads.

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lunchsack86


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Re: help with VELLEMAN KIT
« Reply #11 on: Apr 01, 2021, 02:49 PM »
I FREAKING FIXED IT!

ALL IS WORKING!

I CAN HEAR MY FANS BUT I CAN HEAR PEOPLE TALKING NOW!

legit no clue how i fixed it. i replace wire to mics and mics.. soo maybe that did it

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Rang Ori'dush Oyayc

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Re: help with VELLEMAN KIT
« Reply #12 on: Sep 15, 2021, 07:49 PM »
I FREAKING FIXED IT!

ALL IS WORKING!

I CAN HEAR MY FANS BUT I CAN HEAR PEOPLE TALKING NOW!

legit no clue how i fixed it. i replace wire to mics and mics.. soo maybe that did it

where did you place this and also did you leave the mics on the board or place them outside somehow?

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Re: help with VELLEMAN KIT
« Reply #13 on: Sep 23, 2021, 07:13 AM »
where did you place this and also did you leave the mics on the board or place them outside somehow?

You can see my instalation here if you want :)

http://mandalorianmercs.org/forum/index.php?topic=197151.0

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