fs-ct6b tx accidentally I reversed the battery after that it is not powering but using usb its red light is dim glowing and my laptop device manger is showing port is ok connected..


Need help

Generally the input section has a voltage regulator and capacitor. When you have connected battery in reverse polarity the capacitor and regulator would blow up.

However the output section of the regulator is functioning normally which is why you can observe tx working fine when connected to PC.

You can open up your tx and replace the burnt components and most probably it will work.

You are right but which components I have to replace?

Few people in the group have some done similar thing and repaired the tx.

Links
1.http://www.rcindia.org/radios-and-receivers/fried-my-fs-i6s-radio-by-reverse-polarity-(help-me-out)/
2.http://www.rcindia.org/radios-and-receivers/rc-transmitter-repair-in-bangalore/
3.http://www.rcindia.org/radios-and-receivers/help-needed-in-repairing-transmitter/
4.https://openrcforums.com/forum/viewtopic.php?t=5885&start=30

can you post a picture of the radio opened with pcb, can know which part to look for !

looks like there are 2 nos of 7805 voltage regulator and one goes to RF module.

Thanks for replying.. But I didn't found.. That part of repair

post a picture i can try identify.

Unable to upload the pic.. Showing error

Post a picture to an image hosting site and share a link or upload it on Google drive or any other cloud storage you use and post the link.

That should work.

http://imgur.com/gallery/sKPqhHW

the ic in the black marking is U2 78L05 voltage regulator. Check to see if voltage is coming and its 5volts! Download the data sheet for pin marking from Google.

This must be the main voltage regulator. Post a picture of the other side to confirm once.

It's coming 3 mili volt

https://i.imgur.com/oCVL2pH.jpg

I have fixed it.. Thanks everyone for ur support s

Great, did you test all the functions including testing with RX ?

No.. But connected to laptop t6config it is working