Spectrum receiver mod? Add extra channels?

[HumboldtEF]

So I was just putting on some conformal coating to a 2 channel spectrum receiver and noticed that it appears to have the same circuit board as the 3,4 and 5 channel offerings......

So does it simply need these servo posts (dont know the right name) soldered in? the pads are there for the other channels.

Has anyone attempted this and/or does anyone know the name of the 3 pin/posts that this might require?

If not I plan to give this a shot. I'll try to post up pictures after work.

EDIT: nevermind on the name, I beleive this is a 3 pin header. Just need to nail down the sizing and spacing I think.

 

[robert@castle]

So I was just putting on some conformal coating to a 2 channel spectrum receiver and noticed that it appears to have the same circuit board as the 3,4 and 5 channel offerings......

So does it simply need these servo posts (dont know the right name) soldered in? the pads are there for the other channels.

Has anyone attempted this and/or does anyone know the name of the 3 pin/posts that this might require?

If not I plan to give this a shot. I'll try to post up pictures after work.

EDIT: nevermind on the name, I beleive this is a 3 pin header. Just need to nail down the sizing and spacing I think.

Should be a standard 2.54mm/0.1" pitch header.

 

[HumboldtEF]

Should be a standard 2.54mm/0.1" pitch header.

Thanks Robert!


So they do share the same board with a few differences from what I can see. The 2 channel receiver is missing the extra Headers of course but I can also see up top there are some through holes that are soldered up. I'm guessing these hole may be some type of lockout as only the 2 channel has it, these holes on the 5 channel are not soldered.
I'm not sure I have a 3 channel to check but I'm curious what through holes are soldered if any.



If those are a lockout of sorts I'm not sure if de-soldering it will do the trick, I may need to carefully drill them out maybe?

 

[J-rc]

I think that the chip might be different.


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[HumboldtEF]

I think that the chip might be different.


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You may be right, I dont see any markings on the 2 channel.

 

[J-rc]

You may be right, I dont see any markings on the 2 channel.

I have a broken 3 channel receiver, you are welcome to have it (for the pins)


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[HumboldtEF]

I have a broken 3 channel receiver, you are welcome to have it (for the pins)


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I might take you up on that thanks "thumbsup"

 

[Lashlee]

A little desoldering braid will take off that solder in the pots that might need to be removed. It should be easier than drilling them out.

 

[robert@castle]

Don't waste your time trying to unsolder those 2 points. They are not connecting anything. The 10 holes up there are used for programming the processor and there is no way to fill in a solder point like that. The holes are called a via: https://en.wikipedia.org/wiki/Via_(electronics) it connects the 2 side of the circuit board together. Filling them in with solder doesn't change anything. It is unlikely that they would ever use a physical lockout like that. I'm guessing that they anything preventing this from working they probably have a different firmware on the processor that locks out the extra channels.