DX7 Noise

[ghostrider414]

Does your DX7 make a noise?

[tailStrike]

Ya. Kind of a light buzzing or something. Thought it was just me.

[fllyer]

I never noticed that (except when it caused occasional "noise" on my TV when working on my 450).

[vetterick]

Yes its the voltage regulator that buzzes, its the same regulator that chews batteries so fast.

[Gino CP]

Which you can replace with a Dimension Engineering regulator for better batt life.

[Pippin554]

Which you can replace with a Dimension Engineering regulator for better batt life.

I was interested in this mod but I don't think you can get them in the UK?

Phil

[Gino CP]

Dimension Engineering ships worldwide. About $1.50 for snail mail.

[tailStrike]

For the benefit of others, here is the mod:
http://www.dimensionengineering.com/appnotes/spektrum_mod/spektrum_mod.htm

I would love to get increased run time out of my Tx, but I don't trust my skills enough to hack the board of a $300+ Tx that is used to pilot much more expensive machines capable of causing plenty of damage to people an property if I lost a radio link. Plus, I'm not sure how the AMA would look upon such a mod.

Not worth the risk to me, but if I was only piloting parkies, I'd probably hack away.

[Helifarns]

That's for the DX6.......I could swear someone posted somewhere else in Helifreak that the DX7 already has a decent regulator in it. :confused:

[mcomet]

Yeah my dx7 hums...

[tailStrike]

That's for the DX6.......I could swear someone posted somewhere else in Helifreak that the DX7 already has a decent regulator in it. :confused:
I realize the one shown is the DX6, but was just going by this blurb at bottom of page:
Updates:
Some of the gang at RCGroups have some soldering tips here (http://www.rcgroups.com/forums/showthread.php?t=548325&page=7&pp=15)

This mod can also be done with the DX7

***The 5V DE-SW050 is NOT the voltage regulator you want for this mod. You want the 3.3V DE-SW033***

[SB]

its not the regulator buzzing it is actually coming out of the speaker on your DX7. i tripped a crossed this when i was modifying mine

Here is my fix

http://helifreak.com/showthread.php?t=49184 (http://helifreak.com/showthread.php?t=49184)

Uses the same huge power consuming chip as the old one
http://helifreak.com/attachment.php?attachmentid=29231&stc=1&d=1193202617

I'm ordering the 3.3V switching voltage regulator from Dimension Engineering for mine
http://www.dimensionengineering.com/DE-SW033.htm
$16.25 cant go wrong there

[Helifarns]

I realize the one shown is the DX6, but was just going by this blurb at bottom of page:

Gotcha, I just thought I read otherwise, somewhere else. :dontknow

Hey SB, keep us updated on how well this works!!! :thumbup:

[SB]

Gotcha, I just thought I read otherwise, somewhere else. :dontknow

Hey SB, keep us updated on how well this works!!! :thumbup:

will do! :thumbup: its gona be a few weeks till i get paid again and can afford it. :(

[0636]

I am using DX7 buzzing sound as indicator that RF part of it is working.
There was a couple times when DX7 was on (LCD screen was ok) but there was no RF signal, so no binding with rx. When I flipped power switch it went Ok.

[tailStrike]

That's not cool to know...especially after a guys heli attacked me and he swore he lost a radio link on his 9303 w/ spektrum module.

[Gino CP]

Any feedback from the Dimension Engineering voltage regulator for the DX7? Any significant improvement?

[vetterick]

If at least twice the batt. life is significant improvement i'd say yes.