I have had exactly the same problem for several weeks with one of my two Tivo boxes. I have rebooted it dozens of times. I have checked the cabling. I have swapped the two boxes over. I have tried different HDMI cables. I have basically tried everything suggested on the forum. But still the problem persists. It seems obvious that the box is faulty and needs to be replaced. I have repeatedly tried to get through to VM on the phone, but have had to wait too long or have been cut off. Megan_L - you have obviously been very helpful to Lambert1. Can you or someone else in the Forums Team do the same for me? I will be more than happy to instal the replacement box myself if it can just be sent out to me. Thanks.
Rather than add "me too" to someone elses thread, it's much better to start your own, describing what your issue is - and the replies won't get confused with other people.
The stock answer is that pixellated pictures on live TV are often the sign of a signal fault. If you've rebooted your box once, then there's likely a fault somewhere, so call VM and report it. You're likely to need either an engineer visit or a replacement box, depending on what VM's remote diagnostics turn up. They can do these while you're on the phone to them.
You've mentioned that you've got 2 boxes in your home and you've swapped them over - but not said what the result of that was? Did the problem follow the box or remain with the internal cabling? Are both your boxes TiVo, V6 or a combination (because you've not said) - check here if you're not sure.
The quickest way to report service faults is to call 150 from a VM phone, 0345 4541111 from any other phone - choosing the options for "I have a fault with my TV service". If you'd rather not call for whatever reason, then forum staff will generally respond to posts on here after a day or so.
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I have gone back in to the account today and can see there is a device issue with one of the TiVo boxes. 2 out of the 3 tuners have input levels that are too low. We will need to get an engineer out to resolve this for you.
I have booked you in for the next available appointment. We cannot confirm the appointment time slot publicly, so to view this please sign in to My Virgin Media here: My VM
If the appointment is unsuitable or if anyone living at your property has tested positive for Coronavirus, has been asked to self-isolate or has flu-like symptoms then please reschedule the appointment on the same link.