Welcome, my name is XXXXX XXXXX I will assist you today! There are a lot of possible causes to the issue your having, and it sounds like you have covered most of them already.. But before you and I start trying any further steps, I need to ask you a few questions. The version of mac osx on your imac, is it 10.6.8 10.7.4 10.8.5 ? Also, what web browser are you using, Safari, Mozilla Firefox, Google Chrome ? Thank you ahead of time for your response.
It doesn't matter what web browser I'm using. I've tried all three. Same thing happens.
Netflix, HBOGO, ShowtimeAnytime. Any internet streaming source in which I watch lengthy videos the streaming stops. Sometimes its 10 minutes in, sometimes 30. I don't use youtube much on this computer and if I do its only for short videos (3-4 minutes).
Thanks Nikolas. Upon further review, it seems that firmware updates for that model of router are controlled by comcast.. ( xfinity ) Meaning.. We cant update the router. And comcast periodically sends out manual updates. Whats clear, is that the router itself is having the issue. In the comcast forums there are other reports of this being a wireless only issue , which only started since the last firmware update was pushed out.. So what can we do? We could try a factory reset of the router, as that might get it working again.Page 45 shows the location of the reset buttonhttp://www.arrisi.com/support/documentation/user_guides/_docs/TG862G-NA_User_Guide_Standard1-3.pdf warning ** when you factory reset the router, its going to erase your wireless network name , set it back to default, and its going to remove your wireless password, or set it back to default. If your not certain of how to set the router up again after the reset, dont reset it yet as I dont want you to lose wireless internet and not be able to reply. ( although, you would still get internet via ethernet cables ) That being said.. A factory reset has only a possibility of fixing the issue. If it doesnt fix the issue.. Then theres only solution A or solution B left. Solution A.. call comcast and see if they have a new firmware update to send out, as the last one is what caused the issue. Solution B, tell comcast you need a different model of router because after the last firmware update, your wireless no longer works properly with all your devices. I hope the factory reset works.. But if it doesnt, A or B above will absolutely fix the issue. if you have any further questions, please let me know.I strive to provide great service, and greatly appreciate a rating of excellent below when you are satisfied.. I always answer follow up questions.Dustin S. Senior Technician and Network Switching Systems Operator / Maintainer.
edit** While I Was typing and after I sent this reply, I seen your reply saying you changed to this router two weeks ago and thats when the issue started. We definitely need to either update the firmware through comcast, or replace this router. As the issue your having is a known issue with the last firmware update that hit this router..
Issue is not yet resolved. I have to go to a Comcast office and exchange what they supplied (a combo router/modem) for a router only and attach it to s separate modem and see if that solves the problem. I have not had an opportunity to do that yet.