hmm, well assuming its all RG-6 coax it sounds like the wiring should be good. I take it you've tried replacing the equipment already as well and the diplexer if there is one. would also recommend NOT grounding any splitters or diplexers as well, just the main feed in to the house. I have had a few jobs like that were very unique and took many hours and multiple trips to resolve the issue. one job turned out the DVR box was putting voltage back in to the line and the box was screwing everything up, i've only seen that happen like 2 or 3 times in all of the boxes i have installed. another job that had me trying to figure it out til 3 am in the morning because I was so curious, was it turned out to be the damn customers TV! I was literatly able to lose sync on the RG once i turned on the TV, over and over again. It was roughly a 25" philips tube TV, no line conditioners or relocating the boxes to different outlets would work. what kind of trouble are you having exactly? if you are installing u-verse have you tried a port swap? and from what I have seen cat 5 has always been the way to go and generally resolved all of the issues. another thing I know that was a known issue was if the customers service was all running off 1 modem, TV, phone and internet, there was a revision of RG's that simply could not handle the load and required a 2nd router behind router to handle the workload for the wireless and ethernet ports. but as far as the line conditioners, I personally have not had any luck with them ruling out electrical issues, try checking the electrical outlets with your GFCI tester to make sure the polarity is correct and not reversed. If you have all of the boxes running off an RG you may want to consider moving the RG itself. Another unique job that I had was with a TV hooked up to the STB over coax and put on channel 3 was spitting voltage through the STB back in to the HPNA and switching to RCA's or component cables did the trick. if its an older TV that won't support RCA's, use a converter. have they been having trouble with the service since day one of installation or have they had it for a while and then finally started having trouble? have you ran any diagnostic tests? you may want to get the outside line checked if it hasn't been already.
This is CABL.com posting #323768. Tiny Link: cabl.co/mbwoe
