If you not already done so please try and switch off any picture enhancing features running on the TV and then try again to see if you still get the same problems.
Hi there Modsrule1976,
I'm really sorry to hear that you've been experiencing some issues when viewing HD channels.
I've run some testing on your TiVo® and can see no reason behind this - all power levels are spot on, and there are no known local issues.
I see that you state that cables check out, may I ask have you been able to try a different HDMI cable from the TiVo® to the TV?
Let me know. Apologies once more.
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Thanks for coming back and confirming.
Whilst the testing of the TiVo® shows no fault, as you've eliminated both TV and HDMI leads, then I think it's best to arrange for a technician to call out and take a closer look at things for you.
I've sent you a private message in order to get things moving with this, please look to the top right of this page where you'll see a purple envelope icon, click on this and you'll see my message.
Many thanks and apologies again.