RC India

RC Equipments => Radios and Receivers => Topic started by: dhaksha_dx on March 08, 2012, 05:15:39 PM



Title: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 05:15:39 PM
Guys ive got a HK T6a v2 transmitter which is presently in some problem because the antenna wire in the tx that gets soldered onto the radio board is disconnected , i dont know which wire should be soldered where
the antenna has 2 wires, please help me on how solder and where , please,  :help:  :hatsoff:


Title: Re: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 05:34:12 PM
anyone who has a hk/flysky t6a or t4a  transmitter please open ur tx and upload the pics of the radio board along with the antenna wire , so that i can see which one goes where


Title: Re: Need help in connecting tx antenna wire
Post by: praveen on March 08, 2012, 05:37:01 PM
hey its simple the inner wire with shield goes to center node! and outer wire without shield or tinned goes either of the two outer patches or node !
hope this helps!


Title: Re: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 06:11:34 PM
but the connection is not there between the chip(white one near the 3 terminals) is broken so should i connect the chip and the centre terminal with a wire first


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 07:45:45 PM
Daksha..at first do not panic..and, yes the science of  Electronics is not a monopoly to anyone..anyone interested can follow Electronics and can do ample of things..for that we do not need to study the deepest theories..a person with a deep theory knowledge in Electronics never do practical stuffs..so, once again, do not worry..you can also do many things in Electronics..here you facing a simple problem..antenna of your Tx is broken..ok..


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 07:53:42 PM
the most of the presntly available radio sets are produced in a same mother factory in China..in various brand names..these radios ranges from 4 to 9 channels..so, most of the components are same..here you can see the same transmission unit..
     At first, take your antenna module, so, you can see a gray wire, more clearly a shielded wire, with one core and one shield..slowly, remove the stiff plastic sheeth, from tip, to reveal the wires..wrap, the shielded wire gently, all along..strip a little plastic sheeth from inner wire..now we have two wires in hand, with antenna module..
now take your PCB in hand..and you can clearly see here , about the terminals as i marked..
for more clarity, i removed the antenna for you..its clear..


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 07:56:55 PM
now, you can connect any broken link by soldering it..for that you do not need any SMD station..instead take a piece of copper, or brass wire, some thick, and clean its one tip with blade, or by art knife..


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 07:59:05 PM
wrap it on the tip of the existing soldering iron..as shown..


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 08:03:25 PM
now you can solder it easily..and never forget to pull out the plug of the soldering iron from wall socket just before soldering..because a leakage current from your iron can damage some internal parts of the radio unit instantly..checkout all connections are sound after solder..take some extra care while soldering..patience is sucess..its all simple.. :thumbsup:


Title: Re: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 08:45:11 PM
sir that is so kind of u to do so much work just to show me  {:)} {:)}  :hatsoff: :hatsoff:
but actually maybe my radio board can never be fixed because , a week ago , i had tried to solder , but by mistake i had dropped a drop of hot lead on that white chip (IC)  :banghead: :banghead: :banghead: ,so the lead was not coming out at all, and after seeing your guidelines i tried again , but the tx didnt bind with the rx at all   :'( :'( :'(
maybe my bad luck ,and sounds like i have to get a new radio.
Thanks for ur help sir :hatsoff:


Title: Re: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 08:56:35 PM
and sir now that my radio board is gone , can i use the turnigy 9x module ,and moreover the turnigy 9x module binds with the hk t6a v2 reciever, so can i swap the present module with the turnigy 9x one


Title: Re: Need help in connecting tx antenna wire
Post by: roopeshkrishna on March 08, 2012, 09:16:17 PM
Daksha..i wonder that, actually i do not know, why you disconnected the antenna from main board..any way, i hope you may damaged the transmission unit once..and most of such radios are in same coding and can try with all others..and i will try once that to get a transmitter board for you from Fly sky..i hold one now, but it is intended for my coming model project..so, once again, by using a lens, please trace all tracks, for any short circuits and openings.. :thumbsup:


Title: Re: Need help in connecting tx antenna wire
Post by: dhaksha_dx on March 08, 2012, 09:44:57 PM
Sir about a month ago both tx and rx were working fine, but 1 day i did a glide test for my plane, so on crash landing , the reciever went , but i thought the transmitter went , so went to rcgroups and noticed one guy saying that there may sometime be a problem due to the disconnection of the wire going from the main board to radio board, so i went , stripped my tx and cross checked the wires going from main board to rx board , no defects in the wires , as i was fiddling , the antenna wire snapped
 :banghead:  :banghead: , then somehow wrongly soldered it back on and bought another rx from vineet , when i got it that too didnt work , so then i created this thread ;D