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4 in 1 mamba mk2 not giving off the last 2 beeps and no lights

MARK 1

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HEY GUYS I AM NEWBIE TO THIS HOBBY. I RECENTLY BOUGTH THE FPV SET WITH TH MAMBA MK2 ESC PACK SOLDERED EVERYTHING RIGHT ON T ITS PLACE THE VTX RECIEVER CAMERA. AT FIRST I GOT THE BEEPS AND THE LIGHTS TURNED ON AFTER THAT I UPDATE THE MAMBA DRIVERS IN THE BETAFLIGHT AND EVERYTHING JUST STOPPED LIKE LITERRALY DEAD. I CONNECTED THE LIPO TO THE ESC I GET THE BEEPS OF THE MOTORS AND THEN NO SIGN AND EVEN NO BLUE RED GREEN LIGHTS. BUT WHEN I GAVE THE USB POWER IT WORKS PERFECTLY FINE.

ANY SOLUTIONS GUYS ITS MY DREAM PROJECT.
 

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droneguy

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PM me and I can help you through it. It will be much easier once I get the exact steps that led to this current condition.
 
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MARK 1

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PM me and I can help you through it. It will be much easier once I get the exact steps that led to this current condition.
So u would like the wiring or about the things I soldered or a detailed picture of the solder pads
 

droneguy

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@MARK 1 See your PM, I sent you a bunch of info.
 

MARK 1

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droneguy

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In both of these pictures, you have highlighted the Power inductors (used to step down voltage). It's missing in the Kakute picture, but that's where it would be. These are typically rated for very high current ie. 100A so I'd also be suspicious of capacitor failure. You can easily source replacement power inductors if you want to take a stab at repairing.
 

droneguy

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I don't have any specific YouTube videos in mind, but you would need to perform further diagnostics on the other components in that circuit (ie. capacitors and resistors to check for other failures) Then, you will nee to source replacement power inductors to re-solder in place of the failed components. I have a pile of "dead" devices people send me, but I don't have these exact FCs. I find that donor boards are typically the most cost effective route for component sourcing as identifying and purchasing replacements in small quantities usually is cost prohibitive. But ultimately, if you can diagnose the issue and source the components, it just boils down to your soldering skills to remove and add the failed components at that point. I wish I could help you more, but I don't have any equivalent donor boards I can share at this time.
 

MARK 1

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@droneguy thank u soo much for ur help i guess i need a new fc on my quad but i dont have the money with me right now. HUGE THNX FOR THE SOLDERING TIPS.

LOVE
@MARK 1
 

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