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Forum Discussion
CM500 no connection
I bought a CM500-100NAS from a neighbor to have as a spare, and it only locks into one downstream channel at very low power, -26 dBmV, and no lock on any upstream channel. I have two other modem...
After 1.5 hours the Motorola modem has accumulated 61 corrected errors, no uncorrected errors. Error log is still clear.
In the past I've connected the modems directly to the outside Xfinity interface, and we still had the short drops in service. That's convinced me that the problems are Xfinity's and not mine.
I'll try connecting the CM500 to the Xfinity interface, and if there's no improvement I'll conclude it's defective. Is there any other reason to have good signal levels on two modems and nearly no signal on a third?
In the past I've connected the modems directly to the outside Xfinity interface, and we still had the short drops in service. That's convinced me that the problems are Xfinity's and not mine.
I'll try connecting the CM500 to the Xfinity interface, and if there's no improvement I'll conclude it's defective. Is there any other reason to have good signal levels on two modems and nearly no signal on a third?
no.
if there's 2 good ones. its probably a hardware failure.
I'd be betting on the coax connection in the modem
- Thanks for the replies, I appreciate you taking the time to help out.
I don't think the previous owner has an active cable connection anymore to try it over there.
I may open up the modem and see if there's anything obviously wrong with the cable connector.