[jcmwwe]

Hi I was wondering if anyone else has had this problem? I have a Sony Kdl32l5000 hdtv. I have tried 3 of this same tv, and everytime I get it, the tv will flicker sometime when I turn the channel. I have noticed it the most when I go from a sd channel to a hd channel. It will keep doing it until I change back to sd then back to hd. Sony tech support told me it is a internal malfunction, but have never had this problem before, but like I said this is the third one. I was also told to try changing the hddvr box, and I did but is still doing it occassionally. Is this still the tv or do you think it is the cable. I have had nothing but problems with the cable since going to hd, with this problem, and also experiencing pixelating on hd especially sports, or a lot of movement. But cant get time warner to fix it. If anyone can help me I appreciate it. Thanks

 

[DrDon]

Are you changing channels on the TV or on the cable box?


Connect the cable directly into the set and do a scan. If your cable company offers local stations in clear QAM, you should see those. Find one you know broadcasts in HD and flip back and forth from that channel to a regular analog cable channel. If you don't see the same flicker, then the problem is with the cable box.


I'm guessing it's the cable box. When I change channels from SD to HD on my Motorola cable DVR, there's about a second or two of picture weirdness unil the cable box and TV get back on the same page, so to speak. I get a flash, diagonal lines, a stutter ..and then it locks on just fine most of the time. During that time, a lot of things happen inside the box. Output resolution changes, it has to verify my subscription and so forth. It's taken up to five seconds to get a stable picture.


Doc


PS: Topic title changed to make more specific

 

[mjones73]

Most likely your cable box is set up to output native resolution and the TV needs to resync on the channels when you go from HD to SD or vice versa. It's possible you can turn that functionality off on the cable box so that it scales all channels to one resolution before passing them to the TV. There are master threads here for the various cable box models out there, you should be able to search on yours and find the steps on how to do it.

 

[walford]

Pixelation with a lot of movement is caused when your TV company is not using enough bandwith for the tranmission of HD content and therefor some frames are being dropped. Since all frames being transmitted are not full fames (also update frames are used) you get pixelation. I don't think there is anything wrong with your TV.