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Remote codes for the Scientific-Atlanta remote are unknown or invalid Remote codes for the Scientific-Atlanta remote are unknown or invalid If you do not know the remote codes for a device, or if you've tried all the listed remote codes for your device and none of them work, you can search for the correct remote code by following the steps below.
Note: These steps only apply to the Scientific-Atlanta AT8550 AllTouch Remote Control. If this is not the make and model of your remote, go to the supported remote control models page and find the instructions for your specific remote control.
Searching for a Remote Code
The mode button blinks twice.
The remote control tests each code in its library. The mode button blinks once each time the remote transmits a new code. When the last code is reached, the mode button blinks twice.
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