cable light flashes when without a splitter

[waqasahmed]

Basically, I have a Scientific Atlanta 2100 modem in my room(not modified-genuine sub) and sometimes when I want to watch TV, I pull out the cable connected to it, and hook that up to my receiver

The problem is that once I put the cable back in to the modem, it takes ages for internet to come back again. and unfortunately I cant just use this without a splitter because a) the family would be quite annoyed at me(especially my little brother lol) seeing as they cant have TV b) The splitter is downstairs, whilst the modem is upstairs

When I unplug this modem and take it downstairs along with the PSU just to check if their is an internet connection,I "plug" the coaxial cable in to the back of the mode, power it up, and the cable light lights up along with the little dance it does to show that its connected to the net

When I leave it upstairs, it will do a little dance with the lights first, show the PC as connected, but the cable light will just flash and nothing gets sent or received until some time later when it comes back to life of its own accord

Also I dont leave this hooked up to the TV for long, as I just normally watch Family guy/ South park upstairs(and maybe a movie if theres a good one on) but thats about it

[BL4K3Y]

Sounds like a low signal issue to me.

[MorriSoft]

Originally Posted by blakey_8

Sounds like a low signal issue to me.

Beat me to it.

My modems would often do the same thing, sometimes failing to re-sync entirely.

My solution was the Konig PRO series CATV Signal Amplifier. (the big yellow brick)

After tweaking the gain + slope controls slowly for 5-10mins, I got my DS to within the -6 - +6 range and my snr back to 35-36 up from 28-31 while keeping snr for the STB at around 37.

The cause was a 4-way splitter.

[waqasahmed]

Just wondering cant I contact virmin to put more power in to their green box somehow? So this doesnt happen as much?

[MorriSoft]

Originally Posted by waqasahmed

Just wondering cant I contact virmin to put more power in to their green box somehow? So this doesnt happen as much?

Not without explaining why you know it would correct the issue I wouldn't have though so.

The big yellow brick is cheap on ebay and I used just the one to boost 5 outputs in total (simply by placing it before the splitter(s)).

[sr20]

If you're modem isn't modded then why fk about?

Tell them to come and fix your signal because it connects immediately downstairs and takes ages upstairs.

You've not looked into SNR or DS power level, so you can tell them 'why you know' its the signal: Its because its obvious. It doesn't sound like you actually know anything re modems that you shouldn't anyway.

In fact...it may not be the signal at all..have you tried turning off the power to the modem before you disconnect the feed, then plugging the feed back in before the power? It may be that simple..

sr20

[waqasahmed]

Originally Posted by sr20

In fact...it may not be the signal at all..have you tried turning off the power to the modem before you disconnect the feed, then plugging the feed back in before the power? It may be that simple..
sr20

Thats the thing I did when this happened twice. So this is not so simple. It just comes back of its own accord

[G77]

leave the modem upstairs and get them out. tell them you dont know what happening but it takes ages to connect, dont start talking SNR ect.

he'll have to move you up in the cab

[waqasahmed]

Originally Posted by G77

leave the modem upstairs and get them out. tell them you dont know what happening but it takes ages to connect, dont start talking SNR ect.

he'll have to move you up in the cab

TBH, I have no idea what SNR is anyway and by this

Originally Posted by G77

he'll have to move you up in the cab

Do you mean that they will just "pump up" the signal to my house?

[G77]

yeah, the higher, the more power. have you read the d/s power and snr on the upstairs feed?