ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hello
I've been a satisfied user of this Beovision tv set, but now this additional dvb-hd (used to watch dvb-c broadcasts from cable) module is getting tricky. TV was off from mains for a while, and DTV button didn't work anymore after that. I turned the module off from the options menu, and tried to turn it back on, but now it just says "DVB-T/C HW not present".
Is it common that these modules fail, or is there some other issue? Thank you for any suggestions
I tried to activate the module after unplugging antenna cable and it worked, funny. It has done the same thing before, but there was no need to unplug the antenna. I guess I just have to keep the TV on 240v all the time to avoid this problem
Hi Matti,
Two things spring to mind..
You mentioned the issue resolved when you disconnected the antenna cable. It could be that the module has a loose connection and in removing the cable you caused enough movement to correct this (perhaps permanently, or perhaps only temporarily). If the problem re-occurs you might consider removing the back of the TV and checking all the cables are seated correctly between the module and the main circuit board.
You also mentioned though that you are connecting to cable TV - In the UK (and I would assume elsewhere too) it is normal practice for a galvanic isolator to be installed where the cable TV cable enters the building. This helps to protect equipment inside the property from damage resulting from a fault on the providers network / equipment and the cable providers equipment from damage resulting from a fault on equipment inside the dwelling. It also eliminates ground loops which can cause interference, arcing and malfunctions of the connected equipment. I have on a number of occasions seen these bypassed or removed - often as the result of the homeowner wishing to use a antenna faceplate that matches their other socket outlets and switches rather than the more unsightly plastic box installed by the cable TV provider. It would be worth you checking there is a galvanic isolator installed as lack of one could also explain the issues you are experiencing (look for a metalic box or barrel shaped device with two or more aerial or satellite type connectors).
Kind Regards,
Martin.
Thanks for your input Martin. I could remove rear cover and check those connectors if problem occurs again.
About that isolator, I'm not so sure about it. Here's a pic of the cable system:
http://archivedforum2.beoworld.org/media/p/133465.aspx
Black cable comes from the company, white cable is for modem, rest goes to wall outlets. Can those splitters act as an isolator or is it always separate device? There's no separate boxes or anything special at antenna wall outlets.
Matti:Black cable comes from the company, white cable is for modem, rest goes to wall outlets.
The two way splitter looks to just be a standard splitter. I'm not sure whether there is any isolation built into that larger spitter that feeds each of your wall outlets.
Does that black cable come straight in from outside or is it connected to a box somewhere that the cable company install?
It's difficult to advise as I'm sure these things vary between countries, but in the UK (where cable TV is still less common than elsewhere in Europe as most households watch via terrestrial or satellite) they terminate their underground cable into a brown box on the outside of the house, then route a cable through the wall to a white box on the inside:
This white box actually contains the isolator which looks like this:
I've seen properties where people have removed the white boxes (and consequently the isolator) and routed a new cable from the outside box to a new position indoors, and then either connecting the new cable direct to the receiver, or installed a standard satellite outlet faceplate in whatever decorative finish matches the rest of their socket outlets and light switches.
You could always install an isolator behind your TV - There are smaller barrel shaped ones available, and it won't matter if there is already one installed elsewhere (it will also serve to isolate your BV7 from any potential ground loops to other cable TV receivers in other rooms). It may of course be that the intermittent fault on your BV is nothing to do with external issues but since an isolator should cost no more than 10 GBP/EURO/USD it's not going to cost a lot to rule this out as a potential cause.
I think that black cable comes straight from outside, I bought that separate isolator as you suggested. Thanks for the help!