Been getting some reports from viewers with missing channels (mostly from Auckland's North Shore and missing Prime, Al Jazeera, Sommet Sports, Choice TV) after a retune. 

Followed up on a few cases and they were all down to user error or set-up issues unrelated to the restack.  For example, retuning a TV but not the HD receiver (in this case the TV was simply used as a screen and it's the receiver that needed to be retuned), using a satellite dish or getting signal from a shared aerial.

If you're not having success with retuning, please first work through the troubleshooting tips.

If still no joy, please reply to this and let us know the following details because it would help us narrow down the possible solutions for you - thanks!

• When your device warned you that 'All digital channel settings will be deleted' did you select OK / YES to proceed with the retune?  If you didn't then you haven't completed the retune, please select OK / YES at this step to complete the retune.
• If you have a receiver connected to your TV, have you retuned that receiver?
• What aerial are you using?  indoor/outdoor/type or description (if you have a satellite dish, your reception issue is unrelated to the restack, please post a separate discussion.)
• What's your street address (don't wish to disclose?  Do a Coverage Check & state output)
• Are you in an apartment or using a shared aerial (with a central signal amplifier)?
• Which transmission site is your aerial pointing at?
• What's the polarity of your UHF aerial?
• Have you tried a COLD RESTART? Disconnect the aerial cables, switch off power at the wall, wait at least 30 seconds before reconnecting and powering on, then retune.
• Have you REMOVED OTHER DEVICES? Disconnected ALL other devices from your TV/receiver (such as analogue VCR, DVD recorders or SKY decoders, espeically if they're connected via coaxial cable). Connect the UHF antenna cable direct to your TV or receiver from the wall (without ANY other devices in between).  Retune.  See this tip on how to adjust your RF modulator to avoid retuning interference from other connected devices.
• Have you tried a MANUAL TUNE or MANUAL SCAN on your TV or receiver? Please see RF Chart here which states what RF numbers to plug in during this process and refer to your DEVICE MANUAL for instructions.
• Have you tried a FACTORY RESET on your TV and receiver? Please refer to your DEVICE MANUAL for instructions on how to reset to factory default.