Hi All,

I have recently purchase Turnigy9x and after 4th or 5th time during on process,
I turn on it and hear some burst noice (very low), and then smell, and I switched off that radio instantly

So I open it and found one component on board is burned....

can anyone help me

Hi,

The exact same thing happened to me on my Flysky th9x which is the same as turnigy, although i didn't hear a burst of any sort.

I sent mine to RCBazaar for repair as i purchased it from then.

The part that is burnt is the capacitor. You can find more information in the links below.

http://www.rcgroups.com/forums/showpost.php?p=16880335&postcount=11
http://www.rcgroups.com/forums/showpost.php?p=17595400&postcount=4589
http://www.rcgroups.com/forums/showpost.php?p=19956229&postcount=5

Thanks karthik,

Nice to know that I am not the only one,
So is your radio is repaired by RCBazaar ??
Is it working properly after repair ?

do you know can tell me what is marked on you persent capacitor/registor value ??

The radio has not been repaired yet, as the availability of parts locally is the issue.

The part no is "10 20U" for the capacitor.

ok, is it the same capacitor, shown in my radio pic ? or you  have burnt another,

and following link show, person is repairing it with help of 4 electronics component
http://www.rcgroups.com/forums/showthread.php?t=1415356#post19956229

1x This Cap (Part # 478-1682-1-ND)
1x This VR (Part # LM78L05ACZNS-ND)
1x This VR (Part # 296-11118-1-ND)
1x This VR (Part # NJM78M05FA-ND)

a bit confused, i can do soldering but I am not electronics guy in reading capacitors etc...

The capacitor burnt in my radio is the same one as yours.

The other 3 parts that are mentioned are IC's which are with the capacitor and form the voltage regulator. The parts mentioned in the link are the ones he had to change but does not necessarliy mean the exact same ones are damaged in your radio too.

I would suggest you to visit your LHS or a known professional who is well versed with PCB's to identify any burnt or damaged parts by using proper instruments as superficially looking at the circuit will not help you.

Also, soldering a SMD based IC is a different art altogether. I would not suggest you trying it if this is the first time you are working on a PCB.

Please note that the exact part in your radio might be different from others as the internal hardware may have changed as per the needs of the manufacturer.

PS: Ironically I am an electronics engineer myself and have worked plenty on circuit boards but still sent mine to a professional as i dont have all the required equipment to work. 

There are actually  only two components.

1. Electrolytic capacitor( Tantlum type) of 22 mfd 0f at least 16volts( this is a polar device having  a positive and - tive ends.)------the yellow one on your pcb.( any electrolytic capacitor will do well if tantlum is not found)
2. Voltage regulator 7805, the one used here is the low current type with an L, 78L05.-------the black thing with three legs on your pcb.

Both these components are surface mount type. If physical space permits normal type can be fitted also.

Both of these components are very easily available in Lajpat rai market in front of Red fort.( Approx Rs 50 for both)

Jitender

Thanks Jitender,

Lajpat Rai market is easily reachable from here, can you please provide me exact component name and pic(if possible) that will be great help for me

I suppose for second one I have to ask 7805 or 78L05 which is exactly component above to burnt component ??

I think I have burnt this component (electrolytic capacitor)
http://search.digikey.com/us/en/products/TAJB226K016RNJ/478-1682-1-ND/564714

Jitender, the 7805 is only one of the IC in the circuit.

The other two namely 6206A ( left side diagonally to the burnt cap) and J476 ( smaller one to the right of 6206A) are voltage regulators too and there is a possibility of these being damaged as well.

Please correct me if i am wrong. 

Am I understanding right ??

Please correct me ......

I want these component name correctly 

Yes the link shows how it will look.

Ask for or write on paper----22mfd / 16v   tantalum SMD.

As you enter Bhagirath palace from Lajpatrai market side, there are only 2 streets/gates that you can enter through.
In the 1st street/gate ( fromm chandani chowk side) about 15 meters inside there is an electonics shop (a corner shop with two sides open) which sells only components. Both of these will be avalable .

However these are very common components and will be easily avalable at many other shops. ( they usuly do not bother to entertain customers asking for one or two pieces)

The best place to get these components replaced is a mobile repair shop. the will have the components or will get them and have all the equipment to desolder and solder SMD components.

Jitender

Thanks Jitender,

So Do I need to replace only that brunt component..........( 22mfd / 16v   tantalum SMD ) if that component is comman then here is a shop of electronics component, who deal in retail.
or do u know any shop in Bhagirath Place who deal in these component and also deal in 1-2 peice, any shop no ??

the 476J cap seems ok. but can not say as pic is of low resolution.

Jitender

lets have closer look of PCB

most component name are clearly visible

(So Do I need to replace only that brunt component..........( 22mfd / 16v   tantalum SMD ) if that component is comman then here is a shop of electronics component, who deal in retail.
or do u know any shop in Bhagirath Place who deal in these component and also deal in 1-2 peice, any shop no ??)

Yes there are shops selling one or two pieces aso , the one i have mentioned in my earlier post is one.

Will get back to you latter now sleepy Good night.

Thanks Jitender and Karthik,

I'll find these component in morning and try to repair it my own, and will update here....

only if you know how to solder , then only try  to touch the tx inner circut otherwise you will damage the radio , sent you a pm  may be it will work for you ..

this happened to a fellow flyer here.. i m sure thts the same chip. did u reverse the polarity while connnecting battery ?? it happens generally becuz of that.

I visited electronics shop, for this component,
but no good luck,

but he said that it "CRISTAL" component, called it cristal...

thts an RF transistor. u cant get it locally here.. i struggled a lot finding the components for my hitec optic 6 which i burnt reversing the polarity.. imported some also but it was a vain. i decided to send it back to usa for repair.  and kept it aside cuz forshipping to n fro and repair would be a new hitec optic 6 for me. got another for myself.

Do any one know any one who can surely repair it ??
Sujith - ur radio cost is high to it deserve what u did, but mine is 59$ for new with Rx....haha

So my intension to repair it here locally.....

haha.. yeah..

Hello All,

After discussed with Jitender Sir, I have replaced that burnt component with another capacitor, and now my radio is beeping....

Beep partten is

Beeeeeep  Beep Beep  Beep Beep  Beep Beep

I am not sure, and suspecting it is beep for low battry, on volt meter my battry is showing 10.8V

can any tell me what is that beep

Hi All,

I just upload that beep video, and here I see its not battry issue,

It is just switch error, so I went back to my Transmitter and put all switches in correct condition ......waaalaaaa

Its working...................


I would like to Thanks all ppl who participate in this blog and special Thanks for Jitender Sir  Who help me with his mindblowing knowledge and gave me lader to achive this moment 

I have repaired with help of my faulty DVD Player, Because I didnt got capacitor today, but after talk Jitender Sir, I came back home and start finding that value capacitor
and finally found one in my faulty DVD player power supply board. so I unpluge it from their and pluged it in my Transmitter,

Finally I used my multi nose soldring iron (dont know its exact name) and it did work well, now further testing is still pending so I'll do it and will update u soon....

Once Again.....Thanks to all and Jitender Sir       

Do post some after surgery pictures !