Advertisements This is my 1st post. Hope I'm doing it right. I have 2 Series 3 hd Tivos which are serviced by local cable co called Wavecable. This post is about M type Motorola cards. Problems I was having and the solution I discovered, This is posted to help others. Problem: The Gray screen of death. We had storms in Dec with various power outages. After that both of my Tivo series 3 HD units started giving us the gray screen with no signal. Sometimes right in the middle of a show, other times it would simply not allow the upper channels (plus package like channels 99 and up) to be watched. Of course if I rebooted all was fine for several hours. We started rebooting before our favorite shows. Then the recordings started to fail our fav shows would fail to record because the channels had Gray screens and the Tivo will not record that. Test : To prove it was the cable cards and not the hard drive we pulled the cards and watched tv thru the Tivo without the cable cards. It never gave us that gray screen. we did this for 3 days. Thus it was the cable cards not the Hard drive attempted solution : Called cable co fought with them on getting new Cable cards. They sent tech out who had never seen a Tivo before. Uggg Y do that. Tech installed 2 new cards, Did not follow the correct install procedure (strongly urge you to print installing new cable card procedure and hand it to tech) Tech left and of course same stuff was happening. Attempt #2 called cable co to complain about problem and begged to have only a Tivo experienced tech come to my house. Tech came this guy knew what a Tivo was but was very unfamiliar with how to install cable cards or any of Tivo processes. I had him read the cable card install procedure. He did it and left. It worked sort of and started failing within hours of him leaving. We started getting the gray screen of death again. Attempt#3 I went to cable co office met with head tech. Explained I know alot about my Tivo let me install the new cards and explained how he could save a service call that way. Nope had to have a tech do it. I made it clear that if a non Tivo experienced tech came I would send them away. Their best tech came with a handful of cable cards. He had Tivo experience. Solution and things discovered. Make sure that cable company tech's come with several Cable cards. The cable co does not have any test equipment for them so your Tivo is the test. Don't fall for them telling you it's the Tivo (rest my test above) VERY IMPORTANT when they install the Tivo cards do this: Pull both cards that you have a problem with. Reboot Tivo without the cards Before the new cards are installed. Reboot means unplug for 15 sec not the 3 thumbs down soft reboot. Once 1st card is put in (not sec card slot ) in the 1st card slot this is important. Leave sec card slot empty. the Cable card menu will pop up. Go to config page then to pairing have tech read to his home office the Data and host #'s to office. HAVE THE OFFICE SEND initialization to the card. Mine took 8 mins to arrive. Once initialization arrives it will take you to test channels or live tv. Try many channels especially those above 99 . Go back in to : Tivo Centeral select message and settings , then select accounts and system information, then, cable card decoders, then config cable card 1 then cable card menu then Conditional access, if the you see a Con:yes EBCP:Yes "val:? 0x00" it will not be a successful install it MUST say "val:v 0x00" this is key I wish I knew how to post screen shots to help you. After you have a successful 1st card install repeat this for second card. It is not a success until it says val:v 0x00 another thing I learned if you go to Tivo Centeral select message and settings , then select accounts and system information, then, cable card decoders, then config cable card 1 (or 2)then cable card menu then cable card status look at the firm ware updates. My cable cards had different firm ware on each on. They would not work until we got matching cable cards with matching firmware . what a pain this was. I hope this helps someone This took about 4 weeks of cable co visits and reading tons of posts like mine to learn. The Cable cos are not knowledgeable. Tivo is limited so you have to learn on your own.