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Forum Discussion
Blinking Downstream LED on CM1200
Started about 3 days ago. Very spotty connections ever since. Starts off with decent speeds then eventually slows down a trickle. Any ideas? I am hoping my ISP(Cox) will update the modem’s firmware if it needs one.
1 Reply
Do you have a screen snip of the cable connections page and the event logs from the modem?
That helps us check the connection.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.
