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HelicopterRadio - Futaba FASST › 12Z Backlight?
04-29-2011 04:47 PM  6 years agoPost 61
stunthamster

rrNovice

London, England

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High pitched noise from Inverter

Hi all,

I know this has already been said but, thanks for the tips on doing this mod... great job guys.

I've done the mod as suggested in this forum and it works great! I now have a Futaba 12FG with a nice bright backlight. The only problem I have is the inverter makes a high pitched noise every time I turn the transmitter on (backlight comes on with the transmitter).

Giving the fact I'm no expert in the field of electronics I am pretty confident the issue is with the way I've wired it up. I've included a basic diagram of how I've connected everything together (below); if anyone can provide any assistance here, I'd be most grateful.

Of course, it could just be a duff inverter but I think it's more likely to be something stupid I've done when wiring it up.

Thanks!!

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04-29-2011 08:16 PM  6 years agoPost 62
noahb

rrApprentice

Carlasbad, NM

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Most of the inverters make this whine. I believe it's due to the high frequency in which it operates in order to generate the voltage needed for the EL sheet. All the inverters I have seen make this noise. Some are better than others, but I have not heard one that does not make this whine.

Your wiring looks fine.

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04-29-2011 11:50 PM  6 years agoPost 63
RcTintin

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Gloucester England

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I did this mod to my Dx7. The 'hum' you get from the inverter can be reduced if you wrap the inverter in lead tape. It is sold in Golf shops to weigh clubs. After lead tape, I then put a layer of pvc insulation tape around it to insulate the lead.

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04-30-2011 03:27 PM  6 years agoPost 64
stunthamster

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London, England

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Thanks for getting back to me guys; I can live with the noise as it's not too loud. I was worried that I may have wired it up wrong and wanted to make sure the noise didn't indicate damage being done to the Transmitter.

Thanks for putting my mind at rest noahb. Also, thanks for the tips on noise reduction Snowy, I think I'll go with what you've suggested.

Thanks again!

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11-24-2011 07:37 PM  6 years agoPost 65
Rojoalfa

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Punta de Mata,​Monagas-Venezuela

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Let get started... please...

/
/

Ok, I understand 12FG backlit after all...but...

What about 12Z backlight? ... original question...

Does Anyone solved the problem?

/

Saludos cordiales,

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12-26-2011 08:00 PM  5 years agoPost 66
txessie

rrNovice

Durango - Spain

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Hi Sirs.

Here is a solution that I was working on these days
to illuminate the screen of my Futaba 12Z and which would
like to share with all.
It consists in projecting light to the transmitters
sceen by four 3 volt high ilumination leds x 4 = 12 volts
totally and powerd by a 12 V. 3 S. 1.3 mA. LiPo batterie.
To make it I used 2 mm. stainless steel, 3 mm. plywood,
14 mm. diam. carbon tube, a switch, two springs, etc.
Of course. it can be made with other materials and in
many other forms.
When you go to fly, you can go with it or without it.
I´m trying to add some pics to this post which will
explain all. Let´s see if I can do it.
Best Regards.

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12-26-2011 08:34 PM  5 years agoPost 67
RcTintin

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Gloucester England

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Hey mate, that is really neat, nice job done there, well done!!

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01-04-2012 10:12 PM  5 years agoPost 68
Rojoalfa

rrApprentice

Punta de Mata,​Monagas-Venezuela

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/
/

Nice aproximation... doing from the outside... no intrusive...

The question is still on top... what to do from the inside?

/

Saludos cordiales,

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01-24-2012 11:38 AM  5 years agoPost 69
XENØ

rrNovice

Ashland, KY

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finally finished my T12FGH backlight!!
thanks to this walkthrough ,thanks guys!!
links to the parts i used:
http://www.coolight.com/product-p/cl-isc-9v-10-20ft.htm
http://glowhut.com/6-inches-el-pane6.html (THE WHITE ONE)
hope this helps!

AMA: 941587

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03-04-2012 11:23 PM  5 years agoPost 70
I3DM

rrProfessor

Israel

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sorry to bring up an old post, but when you connect voltage feed to the main switch - is that unregulated 2S li-ion pack voltage, or already regilated in the Tx to 5-6V?

www.liorzahavi.com

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03-04-2012 11:52 PM  5 years agoPost 71
noahb

rrApprentice

Carlasbad, NM

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That I am not sure of. Are you wanting to do this mod or you have other plans that need regulation?

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03-04-2012 11:54 PM  5 years agoPost 72
I3DM

rrProfessor

Israel

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i did this mod with a 12V inverter that works fine on 8V also, didnt test 6V or 5V though, thats why i ask.

www.liorzahavi.com

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03-05-2012 12:03 AM  5 years agoPost 73
noahb

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Carlasbad, NM

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I would think you would be fine.

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03-15-2013 11:55 AM  4 years agoPost 74
asciftci

rrNovice

Duzce/ Turkey

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Do you know What is it?

Hello Firends.
I was trying to ad my 12z backlight I finished timer el panel etc.. cirquit. Than opened the radio to put them inside.
I saw that it is not possible to put EL panel back of lcd.
I saw some thing at the cack of lcd. There is no connection with them inside of radio. -free-
Can it be a light connection?
Is there anybody know what it is?
At the picture J2

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HelicopterRadio - Futaba FASST › 12Z Backlight?
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