Won't scan all cable channels.

do you have the air option in the scan menu see
http://tv.manualsonline.com/manuals/mfg/sanyo/dp42841.html
page 9 important fact cable digital gets wiped by air digital channels

You may be able to get around this via a digital hd tv decoder box and then have it on a hdmi input on the TV as a backup to the cable if you can't have both cable digital channels stored and aerial digital channels stored

Using the TV remote unless you can do it manually switch TV to channel 3, not the cable box the TV, you don't need to scan for channels you do need a cable box though

Is it a satellite antenna or regular outside antenna ? What kind of cable do you have? Is it dish network or cox, cableview, radio shack?

If your TV has the screw-on coaxial cable connection on the back, then you will not need a converter box. You can attach an internal or external antenna and have your TV scan for digital channels. The converter boxes are mostly for old CRT TVs with analog tuners or newer home theater "monitor" TVs which are being produced without built in tuners.

Are you using Antene or Cable? you do need to Select cable.
Or the PLL circuit is not working

Why not get a box and hook via rear inputs--not that expensive from most cable companies. If items such as the channel scan are grayed out it means something in the set is set wrong---

if you are not using a cable box and trying to connect cable directly to tv you will get very few channels since they are all digital now and most are scrambled

you will need to hook that cable to the input labled 'QAM' and program tv for digital channels

if you are coming out of a 'cable box' you just need to hook up video cables to an input on tv and change tv to that input - no scanning necessary

hope this helps - if not write back with more details and i will try to help more

good luck!

Seeing as it does not have a digital tuner in it, I would think this would be the problem, you will have to get a box for it.

If you have tried autoprogramming and have found nothing it may be a bad tuner. Is your VCR is hooked up via coax or into a video input? If it is hooked up via video and is working but the coax connection direct isnt it will be a bad TV tuner. Easiest cheapest fix is to use you VCR to change channels or get a Digital Cable Terminal from you cable provider and hook it into video or compnent.

hi your tv will  not show picture if there is no cable or antenal connected insted it will show u the blue back baground