This is a signal issue which could be caused by a weak signal, which can affect only certain channels. Check the connections to the cable box, especially the incoming coax, and eliminate any unnecessary splitters.
To check signal strength with a Motorola box, tune to the offending channel, turn off the box with the remote, then within two seconds hit "OK/Select." This will bring up the diagnostics screen. Select "Inband Status" (probably page d04) and look for "SNR" for the tuner(s). This value should be in the mid to upper 30s. You may be able to improve the signal strength by adding a signal amplifier to the incoming cable line.
It also may be a weak signal caused by problems outside your house, in which case a call to 1-800-COMCAST to have them send out a tech to check on it may be of benefit.
Since your phone and internet are ok, please share the status of your Comcast HSI levels by going to your browser and click or type in this link, http://192.168.100.1 This way I know if your modem is in spec also. I am looking for the downstream power and s/n levels, and upstream power level on the status tab.
Please share how many TV outlets in the home, and if the splitters are located outside or elsewhere like in the basement.
Please make sure you are not routing any coaxial cable through any AC surge protector strips.
Update me with what I'm asking for first, as I want to determine if it's a wiring issue or a set top box issue, since that model is so old.
Ususally your message is caused by the box itself, or a signal issue. Sometimes a full reset ot the box by the Comcast agents might fix it, but most of the time Comcast needs to send out a tech to check and repair your signals.
In any case, you will need to call Comcast support, and they will determine the course of action including sending out a tech to check and replace the box, or check and repair your coaxial cabling. Many times it is a outside issue due to the weather changing affecting the cabling and fittings.
I just had the techs out today to install my DVR, I get this message on some channels, but also it isn't the correct layout for channels for my area? For example channel 6 is suppose to be WCIU but I get GA government access, and my HBO & Show time are not working, nor is the On Demand!
Got this message starting a few days ago; the cable became unreliable and not working at various times. Contacted customer support and was instructed to bring in the box and replace it. We did that this morning but the still giving the same message...before at least we had access to what was on our DVR and now we have nothing. Suggestions?
Had the S0a00 and SM-8 error. One concerning VOD and other missing channels due to signal strength. I purchased a cheap Amplifier to boost the signal coming into the house and found that the signal strength was much better but still having issues with pixelation. I went ahead and bought a 15DB Amplifier and was then able to get everything to work w/ no errors. Removed my 15DB AMPLIFIER and had comcast technician come out and he found that the signal coming from the MPOE to the house was very weak. He re-terminated and I was able to get all channels and VOB but he indicated it was still a weak signal. So he added a 15DB digital amplifier and all was done. No additional fee as it was Comcast needing to boost the signal. Let the technician know I had done the same process and was full aware of what needed to be done. Its funny because I know some of the 3rd vendor Comcast uses tries to tell you its internal wiring when in fact it isn't. So be very aware there are people out there trying to make an extra buck or quota. Luckily the technician that came out was well aware I've done my research...
This same problem just happened to me. Everything was fine last night, but this morning that message keeps appearing, and I've re-set the box a few times. Is swapping the box my only option, or is there something Comcast can do remotely or outside the building?
xeenie - same problem as you but my cable just went back up and I have a picture and sound. Thought I might miss the Bear's game tonight. Also, just curious to know where your outage occured. I'm on the northside of Chicago. Are you near the same location? Thanks... Joe
So an SNR value of 26 dB isn't good? My picture always turned green and pixelated since the day my cable was installed on this TV, maybe that's why. All of the other TV's are fine in the house. So how do I tell them I need my signal fixed?