Upload stream bonded channel not locked
I replaced my modem recently (Motorola MB8600) and as i look through the error log, i am seeing messages such as "16 consecutive T3 timeouts while trying to range on upstream channel 4" and 16 consecutive T3 timeouts while trying to range on upstream channel 3" and those two channels are not locked.
I have tried cleaning out cables, double checking connections to the modem and as far as i know there are no splitter in the house. From what i have read, upstream power level is too high and i have reached to out tech support with no luck. Can someone shed light on what might be going on?
FYI, I previously had a Arris SB6183 and it has no issues locking on to channels.