SpeedyBee ESC repair - Mosfts replace- full video

speedyBee ESC's that came to me for repair, the repair began during which 2 ESCs were destroyed when removing the broken mosfet PCB
Broken Mosfets were replaced and tests were carried out for the correctness of the ESC
The video shows the tools and the process that needs to be done in this type of repair
#fpv
#fpvdrone
#pcb
#solidworks

[@PinkeySuavo]

man you are the most patient human in the world

[@SuperFlaqs]

i swear that as soon as the person connected a motor and and FC and tried to spin the motor, it want up in fire just like all the ESC`s i have "repaired" :D There is more damage than just the FET, there is either some resistor busted or the FET driver as well which need to be checked if needs replacement. Only once i managed to fix an ESC and fly for remainder of the season all other 20 attempts it went up in fire the moment a motor was spun. Beeping fine, spinning NOPE!

[@fraenx07]

x2🥲

[@SorryCap1]

can you send link wich mosfet you used for replace?

[@TorontoFPV]

moral of the story... maybe speedybee costs more than rush!

[@diegobono1042]

where we can find the right replace?

[@ArgeTattoo]

Hola. recién compre una ESC SPEEDY BEE 55A, pero resulta que cuando conecto el cable de alimentación y mido continuidad, me pita. Y no hay ningún cable haciendo contacto por ningún lado. Lo mas extraño es.. que sin los cables, vuelvo a medir y me indica que hay un tipo de corto.. La ESC esta completamente nueva... Hice una prueba probando la continuidad en el TVS Diode y me pita.. Pero desconozco del tema.. podrías orientarme

[@TheFruitcake1983]

bad idea to heat without unsoldering the electrolytic capacitor or at least put a metal shield over it

[@harelaerialphotography6593]

איזה אלוף אתה

[@FPVdronesIndia]

One of my Speedybee esc has a faulty MOSFET in the exact same location as yours. Makes me wonder if its some kinda design issue.

[@Breakingcarbon]

A very likely chance, many esc experience the same problem

[@FPVdronesIndia]

@@Breakingcarbon Okay.. So i was testing my quad indoors and crashed into a pillow on the bed so I immediately disarmed it and then motors started making some weird tone so I got it to my desk and checked everything was ok and then the moment I armed it there was a spark which freaked me out and rest is history.

[@MJ-mw3ni]

Do you have the schematics for the replacement? I have some broken condensators on the back side but dont know what what exact part i need.

[@TheFruitcake1983]

solder out one serviceable one and measure its capacitance

[@MJ-mw3ni]

@@TheFruitcake1983 thanks for the tip. Soldered some new condensators on the esc but it didn’t worked. The fc will get the power so i believe it can only be the power circuit for the MCU. Dont know how to fix that :/

[@TheFruitcake1983]

@@MJ-mw3ni Did they break on impact? If so, the cracks could be either in the board or in the active components. I have fixed my problem now because the GND leg on the connector burned off or broke off inside the board after a fall.

[@MJ-mw3ni]

@@TheFruitcake1983 after a crash i didn’t saw any further damage under the microscope beside 2 broken capacitors. Maybe the pcb go some hits. Do you think there could be some high voltage spikes destroying further components? There also no shorts on the Esc and the resistant is equal to any motor output.

[@TheFruitcake1983]

@@MJ-mw3ni Anything can happen after shocks, cracked capacitors could have shorted out etc.

[@tobinjames1971]

Next time try low temp solder. It will keep the solder melt uniform. Good job though. Those ball grid parts can be a bitch.

[@mykolakhrystenko2886]

What is the type of mosfet to order for this repair?

[@vjaygroup8759]

Me too, dont know which mosfet to find exactly key world searching to buy.

[@Breakingcarbon]

I took a similar ESC

[@akashshaw3986]

Bro i have same esc i have some issue voltage sensor is not working or firmware is showing unknown esc I tried to flash but not working flash error

[@ymalka18]

Your version is correct?

[@PinkeySuavo]

how did u test the motors? they didnt seem to move or smth

[@ОлегГазов-г8с]

They do a little move while activated

[@chanand6542]

היי.איך ניתן ליצור איתך קשר?הייתי מעוניין להתיעץ איתך בנושא הרחפנים.תודה

[@ymalka18]

@@chanand6542 מוזמן להצטרף לקבוצת וואטאפ שלנו - chat.whatsapp.com/JuJpCkGackJLBTISxOEb7e

[@chanand6542]

הייתי רוצה לשלוח לך הודעה בפרטי אם זה בסדר אני רק לא יודע איך קוראים לך.אני חנן דהן תודה

[@julio8010]

Hello, i just got my charging port off the board, it is needed to the drone to make the first "OK" sounds? since that i only hear the motors"beep", theres any way to repair it?

[@nazarkokhan]

Where did you get mosfet for replacement? I also have broken one

[@nazarkokhan]

And also what was the issue? Why did they broke? Was it factory defect?

[@notsogood4321]

@@nazarkokhan mosfets on drone esc's burn out when there is a sudden spike in voltage and or current and those voltages/currents are too high for the mosfet to deal with causing it to get hotter and hotter untill it completely melts itself - these spikes happen when the motors are pushed to their limt during extreme flight manovers , as for your first question , he used the mosfets from the 3rd 4 in 1 esc (the one with no burnt mosfets ) these boards are called doner boards and used its mosfets to replace the burnt ones - hoope this helps

[@TyranttFPV]

What flux/solder do you recommend?

[@ymalka18]

My recommendation is to use KESTER solder with flux For flux I didn’t have some recommendation

[@prinzrainerbuyo3234]

i use amtech

[@gilboash]

😮😮

[@justinkelch4837]

Board