Celestron 6SE - Coiled cable -Error 17

[Look left]

I,m trying to put a Coiled extension Lynx cable onto my Mount/HC on a Celestron 6SE alt AZ mount with an old style HC ontroller with the info button on bottom left of hand set. However getting Error 17 message where the Dec won't work.

i read that the flat cable may present problems so went for the high priced Lynx coiled version.  Which says it's for Celestron mounts.

When installed I get the error message,tried undoing several times that gets you back to the HC setup ,it goes through everything fine till you try to move in Dec. Tried powering off on, pressing zero on startup etc.

i,ve noticed that the colouring of the RJ 12 is different on handset it is blue,yellow,green,red,black and on cable it is Red,green,blue,black,yellow. But at least it hasn't fried any boards. I,ve updated HC and software to NXS 4.22 5.14 . The hand set says it's SE .

it works ok when I reinstall the original hand controller and everything works fine.

FLO have been good about it and have said it's just an extension cable so should work.

Any suggestions?

Edited June 8, 2020 by Look left