XBOX 360 RF Modules won't sync , fix?

[s8n]

hi members , i have 2 XBOX 360 RF Modules and they both won't sync to a Official 360 Wireless Controller. I spoke to the ebay seller for one of them yesterday and he mentioned his are tested before being shipped out. 2 of 3 work just fine from that sale but one wont sync , as i mentioned i have 2 that don't work the first one i got maybe a couple of years ago i did get a working one sent out.

i have googled and punched in to Youtube and there are some other people with the same problem , still i can't find a fix. Has anyone got a clue to why they are not syncing and a fix?

chat soon