T9X - TH9x - Er9x - Backlighting Installation

[ekill315]

Thanks Richard. Great video. Can this mod be done before flashing to ER9x? If so would the backlight stay on or off?

[richardmrazek]

@ekill315 Ouups, I don't know... Light-control will not works, but it will to do... Try it :)

Or - better idea - switch on Er9x (or Open9x - will be soon video here).

[fioulmaster]

Hello! Just a question: Why to make this modification? We cannot directly plug the backlight in the transmitter?

Thanks for your response and thanks for yours others step by step videos.

[richardmrazek]

@fioulmaster Hi! With this mode you can control back lightning with settings in Er9x firmware.

[rberean]

I have some C945 and C144 transistors that I salvaged from old circuit boards. Would either of these work as a substitute for the BS170 ? Thanks for the instruction video. I put my backlight on and the radio wouldn't power up and after much searching I discovered one of the crystal pins had never been soldered on and the radio only worked because the original foam was pushing the pin over to where it made contact.

[spiro9210]

I have 470 ohm resistors lying around. Can I use this to bypass the built-in transistor directly to red wire to the back light instead cutting the track on the pcb?

[richardmrazek]

@spiro9210 hmmm, Sorry, I don't know, but you can try it :)

[77chrisray]

You are the best my friend. Thank you as always for everything you do.

[ssanfelix]

Is it necessary to cut the middle track? Or is only necessary for simulator runs without backlight?

Thanks

[richardmrazek]

@ssanfelix exactly. Only for backlight on simulator/trainer cable. If you dont cut it, it will be works during standard flying without any problems.

[ssanfelix]

@richardmrazek

Thanks. then i don't cut the track, but is it necessary the wire bridge between resistor and pin3???

[richardmrazek]

@ssanfelix No. Both mods (cut of track and wire bridge) are for this backlight/simulator situation.

[dicio87]

Finally, i find mosfet and i begin the modify !!

imageshack.us/photo/my-images/­819/img0551fh.jpg

What do you think ?? i cut in the right mode the ciruit ??

Thanks a lot for this vid !!!

[richardmrazek]

@dicio87 look on link in video info. All informations are on this pages :)

[ImYourGuiltyPleasure]

Great info. Thank you.

[KozmykJ]

I bought the HK LED backlight but now I'm going to go with the SmartieParts board with EL backlight.

Your FET mod for the HK LED is excellent though.

I'm a big fan of your TG9X + ER9X - Step by Step series.

They explain a lot.

[KozmykJ]

In the video it looks like you have cut through 3 tracks on the small PCB.

Is it only the middle one that must be cut or all 3 ?

Or is it that you used a disc cutter and "nearly" cut the other two? ;-)

[richardmrazek]

@KozmykJ Option b) is right :)

You can look on pictures under video on webpage (link is here). On picture you will see more exact where is track cut.

[richardmrazek]

@KozmykJ Only middle track.

[JonitFR]

dakujem! toto som potreboval :)