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New Visitor
Posts: 4
Registered: ‎07-29-2005

Send light Blinking on Motorola Surfboard SB5180

Once a day or 2 days, The Send Light starts blinking and the connection is lost, I need to power off and back on to fix it.

If this normal?

The Modem is connected to a Belkin Wireless G Router

What can I do to make it more stable?

Thanks

Natalio
Most Valued Poster
Posts: 7,832
Registered: ‎07-18-2003

Re: Send light Blinking on Motorola Surfboard SB5180

That's not normal. What do your modem signal levels look like?
New Visitor
Posts: 4
Registered: ‎07-29-2005

Re: Send light Blinking on Motorola Surfboard SB5180

Downstream Value
Frequency 693000000 Hz
Signal to Noise Ratio 35 dB
QAM 256
Network Access Control Object ON
Power Level -3 dBmV


Noticed these in the log too, posting a sampleof them:

050812213707 3-Critical R01.0 No Maintenance Broadcasts for Ranging oportunities received - T2 time-out

050812213708 5-Warning SYNC: US Gain wasn't found in cache

050812213650 3-Critical U02.0 UCD invalid or channel unusable
Most Valued Poster
Posts: 7,832
Registered: ‎07-18-2003

Re: Send light Blinking on Motorola Surfboard SB5180

> Signal to Noise Ratio 35 dB
> Power Level -3 dBmV


These look fine. Did you see an upstream or Tx level?
New Visitor
Posts: 4
Registered: ‎07-29-2005

Re: Send light Blinking on Motorola Surfboard SB5180

These are Upstream values

Upstream Value
Channel ID 8
Frequency 32000000 Hz
Ranging Service ID 5877
Symbol Rate 2.560 Msym/s
Power Level 51 dBmV
Most Valued Poster
Posts: 7,832
Registered: ‎07-18-2003

Re: Send light Blinking on Motorola Surfboard SB5180

> Power Level 51 dBmV

That's a little on the high end, but I don't think itwould cause the problem you're having. Check that everything is plugged all the way in. Youre modem may be dying on you. Is it a leased modem? If so, I'd call Comcast and ask them to replace it.
New Visitor
Posts: 24
Registered: ‎08-24-2003

Re: Send light Blinking on Motorola Surfboard SB5180

Hmm, I'm not sure why it's losing sync. Maybe your signal on the return path is fluctuating. Your upstream power level at that *particular* time might be okay, but start worrying when it reaches 55dB.

I was happy with a 39dB for my upstream and all of the sudden it jumps to 55db and I lose sync. It came back down the next day. Comcast's response... we don't know anything about it... heh.
New Visitor
Posts: 4
Registered: ‎07-29-2005

Re: Send light Blinking on Motorola Surfboard SB5180

I watch over the upstream values, Apparently that is the only weir value
New Visitor
Posts: 6
Registered: ‎11-08-2003

Re: Send light Blinking on Motorola Surfboard SB5180

Having the SAME exact problelm with the same equipment. Not sure how to get all that upstream stuff though to compare. Been happening for about a week, got really bad (7hours outage) on Sat. Tech came Sun, of course it was working, all he could tell was that my modem was "ranging" . Had no fix or advice, just replaced splitter and coax. Worked rest of the day and then today out in morning, up by two pm. don't know.....
Most Valued Poster
Posts: 7,447
Registered: ‎07-10-2003

Re: Send light Blinking on Motorola Surfboard SB5180

Once the modem connects it should be stable. It should not be "ranging". Go to the Read This Thread First at the top of this for info on getting signal data.