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Futaba 6EX 35 MHZ not transmitting

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Jake gazzard30/09/2013 07:08:12
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24 forum posts

Hello guys,

I bought this 6EX a few weeks ago, a guy had it brand new unopened!

It worked perfectly for a few weeks, but on Saturday it turned on fine but it would not connect with any of my recievers. It's not the crystals as I have tried multiple and it's not the receivers as all 5 worked perfectly a few weeks ago. Its not the PPM or PCM. It's not the TX or RX batteries either as I have tried a few.

any ideas at all? I had no luck googling it. It's really frustrating as I just built a Tricopter, and my Weston Cougar is desperate to fly!

Thanks in adadvance

Jake

Edited By Jake gazzard on 30/09/2013 07:10:04

Andrew76730/09/2013 07:51:52
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809 forum posts
4 photos

Hi Jake

Don't know the answer on yours but i had an identical problem many years ago which turned out to be a failed joint on the crystal holder. It would be worth having an engineer check the whole Tx.

Andrew

Jamie sawyer30/09/2013 07:54:37
390 forum posts
99 photos

If it was me the first thing I'd do is try and get another Transmitter to illiminate all the airborn gear you have. Is there no one you can borrow just for 2 minutes to try a xtl in there tranny to check. If its the TX the only route is to contact the seller you bought it from or Futaba them selves. If its unreliable you cant trust it and you will loose your Cougar. I had a transmitter years ago that did the same just as I took off my first pride and joy. It was a second hand Transmitter and the plane flew in circuits for a full tank of fuel for 10 minutes and then ditched in the sea.....all was lost and I was 12 years old and gutted !!!.....

Jamie

Masher30/09/2013 07:56:27
1099 forum posts
160 photos

Wherabouts in the country are you Jake? I may be able to sort it if you could get it to me.

Martin

Jake gazzard30/09/2013 07:59:58
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24 forum posts

Thanks for the replies guys, thanks Martin, I live in the dreaded land of Essex

Masher30/09/2013 09:54:09
1099 forum posts
160 photos

No good then, I'm in Hereford. Perhaps another engineer type will see this post who is more local to you.

If it was me, I would want to take advantage of this weather and those new models and get out there - a Spektrum DX6i combo is less than £120 from Kings Lynn models and then you would be away!

David Tweddle30/09/2013 10:10:57
290 forum posts
3 photos

I have Futaba 35 TX Boards PM me for what they are? I will look Wednesday (A Photo would help me), but first you need to diagnose the problem. I am in SE Kent (Folkestone) also no 35 all converted to 2.4. so prob no help to you.

I could sort you out a 35 RX if that helps.

David

kc30/09/2013 11:04:44
5901 forum posts
168 photos
If it really was new & unopened then it may well still be under warranty, if it's too old for that then it's suspicous. There are so many 35 Mhz sets around unused now ( due to 2.4 of course) that it's not even worth trying to repair such a Tx. Reliability is everything.
Ask you clubmates if anyone has an old reliable Tx they dont use.

Edited By kc on 30/09/2013 11:07:06

David Tweddle30/09/2013 12:00:45
290 forum posts
3 photos

PM sent Jake

David Tweddle30/09/2013 12:02:56
290 forum posts
3 photos

I also got a S/H 2.4 6EX it came with battery and Black Wiresad...

David

Martin Harris30/09/2013 12:52:31
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8556 forum posts
214 photos

There was a design/build fault on one that a clubmate had which caused a claim on the BMFA insurance when his model hit a car shortly after take-off - that I happened to be standing at the other end of....

It was quite sobering to see the damage to sheet steel caused by a medium sized model with a 46 engine...

He had recently passed his A and it was his instructor's car that was hit and despite his protestations, most people put it down as an early solo error.

A couple of weeks later he found glitching as he carried the model out - with the transmitter resting on the wing (a good way to get marks all over it, by the way) and after some investigation, I found that the cover over the crystal holder was applying pressure to the mounting on the PCB and had cracked the joint. I resoldered it and built up the casing with epoxy/microballoons to stop it happening again. On reflection, the description of his actions and experiences during the previous incident were entirely consistent with a loss of transmission.

The other thing you could check is whether the aerial wire has come loose from the internal mounting - I've seen these loosen when people are in the habit of unscrewing the aerial regularly but the usual symptom is intermittent operation.

ROY LIONE 116/06/2019 12:17:56
1 forum posts

I have a 2.4 transmitter 6ex went to the field and it rained all day went home two days later i noticed the tx was switched on battery flat put another in and it wont connect to any rx the only thing that works is the throt cot button any ideas please Roy

Percy Verance16/06/2019 13:31:10
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8095 forum posts
155 photos

Jake it sounds like it's one for Mike Ridley. Try www.modelradioworkshop.co.uk for more info. Mike used to repair/service Futaba gear for Ripmax, but now operates independantly. He's good. Very good in fact....... He's the UK service agent for Multiplex, but can repair or service most makes. He's also worked for MacGregor and JR in the past. 

 

Edited By Percy Verance on 16/06/2019 13:34:36

cymaz16/06/2019 16:32:14
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8489 forum posts
1161 photos

+1 for Mike Ridley

Phil Green16/06/2019 22:20:29
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1501 forum posts
307 photos

Before you send it away just have a listen on a domestic FM radio, keep the tx close and tune just above 105mhz, you should hear a loud, low-pitch buzz that varies with stick movement.

Phil Green16/06/2019 22:20:32
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1501 forum posts
307 photos

Before you send it away just have a listen on a domestic FM radio, keep the tx close and tune just above 105mhz, you should hear a loud, low-pitch buzz that varies with stick movement.

PatMc16/06/2019 22:37:39
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4145 forum posts
518 photos
Posted by Percy Verance on 16/06/2019 13:31:10:

Jake it sounds like it's one for Mike Ridley. Try www.modelradioworkshop.co.uk for more info. Mike used to repair/service Futaba gear for Ripmax, but now operates independantly. He's good. Very good in fact....... He's the UK service agent for Multiplex, but can repair or service most makes. He's also worked for MacGregor and JR in the past.

Edited By Percy Verance on 16/06/2019 13:34:36

I've feeling Jake may not be interested in your advice.
He last posted 6 years ago. teeth 2

Percy Verance17/06/2019 06:35:16
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8095 forum posts
155 photos

Well it's good you found great humour in my trying to help someone.............

Sarcsasm and misplaced wit is of great benefit to us all. There is of course the fact that my post may still be valid or helpful if someone needs a radio repair doing? Another post suggests that was indeed the case. Perhaps you didn't consider that? Like certain others on here, point scoring jibes seems to be a little side hobby of yours........

 

 

 

 

Edited By Percy Verance on 17/06/2019 06:51:03

Mike Etheridge 117/06/2019 09:27:41
1501 forum posts
408 photos

My 6EXA 35 mhz transmitter failed as some of the program adjustments such as 'End point adjustment' just disappeared. I wonder if Mike Ridley could resolve that ?

kc17/06/2019 11:38:50
5901 forum posts
168 photos

The trouble with re-opening old threads is that the old info persists and in this case the new problem is completly overlooked! A new forum member - Roy - asked for ideas why his Tx only has the throttle cut working

He said "

I have a 2.4 transmitter 6ex went to the field and it rained all day went home two days later i noticed the tx was switched on battery flat put another in and it wont connect to any rx the only thing that works is the throt cot button any ideas please Roy"

So perhaps we should try to answer that .....

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