Did I burn my video cam

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kaos
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Joined: Wed Dec 28, 2011 1:15 am
Country: United States

Did I burn my video cam

Post by kaos » Sun Jan 17, 2016 1:20 am

Well, I am wiring up a FPV system for my Syma X5C. tested the vTx and vCam with 1S lipo and everything works fine. both vTx and vCam works under 3.3V-5V. I used a 5V step up voltage regulator to supply 5V to the vCam and vTx to get the best range.
the only thing i did not test is the 5V step up regulator, of course. This Vreg was working but sitting in a bag for > 1yr.
so I connect the lipo again to test, and there goes the smoke from the 5V step up regulator. then I changed another same kind 5V regulator. the vTx still getting hot, as it should and checked the voltage into the vCam and vTx, both at 4.98V perfect.
The only thing is there is no video any more. Checked the voltage acroos video out from vCam to gnd is 0.02V. :(
Another thing is, there is no video signal at all, blank not even noises on the screen.
Can a shorted Vreg sends current to burn out the vCam? There is no sign of any burns on the vCam circuit/chips.
DSC03907.JPG
this is the rig I did.
DSC03910.JPG
This is the smoking Vreg. The smoke is from the coil marked '470'
DSC03911.JPG
Here is how that coil look like after the smoke.


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jhsa
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Re: Did I burn my video cam

Post by jhsa » Sun Jan 17, 2016 1:52 am

Reversed the polarity?
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kaos
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Re: Did I burn my video cam

Post by kaos » Sun Jan 17, 2016 2:39 am

no.It just smoked. I think the coil may be shorted.

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kaos
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Re: Did I burn my video cam

Post by kaos » Sun Jan 17, 2016 11:35 pm

The answer is YES, I did burn my vCAM. :( From a faulty Vreg. :(

Pulled one of my micro FPV's camera and works just fine with the vTx. So decided not to wait for another vCAM to arrive, just swapped the camera and used a new 5V step up Vreg. EVery thing is working. Not noise at all with motor running better than on the other micro quad. Power to FPV set up and the quad are from the same fly pack. :)
This vTx is a 200mW, gets really hot. Will test the range and fly time when I have a chance. Indoors, no issue.
Attachments
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