How do I fix sound sync and picture freezing on a Sony TV only in TVNZ?
Answer
If only TVNZ freezes or loses audio sync on a Sony TV while other apps play fine, the issue is usually the TVNZ app data or a temporary TV software glitch, not the HDMI stick. Clear or reinstall the TVNZ app on the Sony TV, then power-cycle the TV before testing again.
Before you start: stop right away if…
- Clearing app data signs you out of TVNZ and removes local app settings for that app only.
Follow these steps
Clear or force-stop the TVNZ app
On the Sony TV, go to Settings, then Applications or Apps, then Manage Installed Applications, open TVNZ or TVNZ+, and choose Force Stop. If Clear Data or Clear Cache is available, clear cache first, then clear data if the problem continues.
You should see: The TVNZ app closes cleanly and will relaunch as a fresh session.
Relaunch TVNZ and test a live or VOD stream
Open TVNZ again, sign in if asked, and play the same content that previously froze or lost audio sync for several minutes.
You should see: Playback stays smooth, or the freeze or sync issue returns in a repeatable way.
Power-cycle the Sony TV
Turn the TV off, unplug it from power for about 2 minutes, plug it back in, turn it on, and test TVNZ again without changing other apps.
You should see: TVNZ plays without freezing or audio lag after the cold start.
Update or reinstall TVNZ if needed
If the problem continues, check Google Play or the Sony app store for a TVNZ update, or uninstall and reinstall the app, then test again. Leave working apps like YouTube alone.
You should see: An updated or reinstalled TVNZ app plays normally, or you have enough detail to contact TVNZ or Sony support.
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Extra tips
What to look for: Freezing or audio out of sync only inside TVNZ or TVNZ+, while other streaming apps on the same TV play smoothly.
Before you change anything: Confirm which app shows the problem and whether HDMI inputs are affected. Note your Sony TV model from Settings or the rear label. Avoid a full factory reset until app-level steps fail. Never share account passwords or one-time codes with unexpected callers.