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[Geoff C]

Hi Guys,      My Corona 2.4 Rx has stopped operating the servos.      I had to re-bind the Rx to the Tx which was ok, but still no servo movement.       I've had the Corona for 2 years without any trouble at all, until last Sunday morning, the Rx is always wrapped in sponge velcro protection.       I've also tested it with 2 spare servos but still nothing.   Can anyone help please?       Regards Geoff.

[Subculture]

How do you know the RX or TX is okay after rebinding? Have you got another receiver you can try with the transmitter.

If one or other has gone bad, then it's a new one really, at the price they are it's not worth repairing, which would be tricky anyway, as everything is surface mounted, and super fiddly, plus the programming on the microcontrollers will be exclusive to Corona, and they're unlikely to seel spares! That's one of the disadvantages of a lot of modern radio. Cheap to buy, but if something goes pop, it's junk. The old stuff based on analogue IC's was a lot easier to repair.

[Circlip]

The old stuff based on analogue IC's was a lot easier to repair.

  And the older bits are increasingly (?) dissapearing. Servo Amp IC's, and have you tried to get an XFG1 recently? 
 
   Regards  Ian.

[Geoff C]

Thanks Guys,     I'm not R/C literate, I just plug it in, follow the instructions and hope it works.     I don't understand why it was ok on Saturday night and dead on Sunday morning after working ok for 2 years?       I'll get a new Rx and bind it and let you know how I get on.       Many thanks for your replies, regards  Geoff.

[malcolmfrary]

With many years of practice and experience, I have developed some tricks for preventing servos from working.
My favourite is to insert the servo plug into the RX back to front.  This is hard to do with keyed plugs, but is possible.
My second favourite is to plug into the space between pin rows, rather than onto the RX pins.
With the advent of cheap multi channel sets I can now plug into unused channels.
Apart from the possibility of actual equipment failure, there are many possibilities.  A servo tester is a handy device that saves a lot of thinking.

[Geoff C]

So which way round do you plug them in, anyone?

[Stormbringer]

usually for red , black and white wired servos the white wire is furthest from the front
brown , red and orange wired servo the orange is the white so furthest from front , sometimes the rx has a + - and a sine wave denoting the signal marked on it , white or orange are the signal wire

[Geoff C]

Thanks a lot everyone, looks like a new Rx then.     Regards  Geoff.

[barriew]

I presume you have checked the Receiver Battery voltage


Barrie

[Geoff C]

Thanks yes, the Rx works through the ESC  BEC circuit, when it's working.       I swopped the 2.4ghz for my old 40mhz Rx & Tx and the servos work ok.       Regards Geoff.