444 replies to this topic

[Glenny6766]

..., on Jan 19 2011, 01:45 PM, said:

There's definately some sort of interaction between the two devices going on there mate.

Is it possible to run an extension cord from another room (ideally on a different power circuit) and plug the two into different power supplies?
Another possibility is interference on the antenna feed, try having both units connected and unplug the antenna fly lead from the STB and/or wall. Still humming?

One other thing to try is to get hold of another STB from somewhere and see if also exibits the same symptoms.......

It seems that the answer is the interference on the antenna feed, with both of them plugged in the humming stops when I unlpug the antenna. How can I fix this mate ?

[...]

Glenny6766, on Jan 19 2011, 10:52 PM, said:

It seems that the answer is the interference on the antenna feed, with both of them plugged in the humming stops when I unlpug the antenna. How can I fix this mate ?

Do you have a powered signal amplifier, either plug in or mast head, for your antenna?
Try unplugging it.
If this works then see if it's possible to plug the amplifier into a different power circuit and see if that works.

If no amplifier or unplugging the power doesn't work then it's time to call in a specialist.....  

[pgdownload]

Depending on your skills you could use the old antenna cable to pull through some newer (better insulated) cable and hook that up to the antenna yourself. That's probably what a specialist would first try.

Regards

Peter Gillespie

[...]

pgdownload, on Jan 20 2011, 04:26 PM, said:

Depending on your skills you could use the old antenna cable to pull through some newer (better insulated) cable and hook that up to the antenna yourself. That's probably what a specialist would first try.

Regards

Peter Gillespie

I'd check for a possible 'ground loop' issue with any signal amplifier first.

Simply because it's a lot easier and cheaper to fix!

[pgdownload]

..., on Jan 20 2011, 04:29 PM, said:

I'd check for a possible 'ground loop' issue with any signal amplifier first.

Agreed, my comments were meant to be place in between doing that the specialist arriving.

Regards

Peter Gillespie

[Glenny6766]

..., on Jan 20 2011, 04:21 PM, said:

Do you have a powered signal amplifier, either plug in or mast head, for your antenna?
Try unplugging it.
If this works then see if it's possible to plug the amplifier into a different power circuit and see if that works.

If no amplifier or unplugging the power doesn't work then it's time to call in a specialist.....  

Good Morning guys,

I have unplugged the amplifier, and the humming stops. I used an extension cord to plug it into a couple of different rooms and the humming was still present. Is it time to call in a specialist?

P.S I really appreciate the advice you guys have given me so far, sorry to be a pain the a**

Glenn

[...]

Glenny6766, on Jan 21 2011, 09:41 AM, said:

Good Morning guys,

I have unplugged the amplifier, and the humming stops. I used an extension cord to plug it into a couple of different rooms and the humming was still present. Is it time to call in a specialist?

P.S I really appreciate the advice you guys have given me so far, sorry to be a pain the a**

Glenn

From here it's a bit grey......

There is what is referred to as a 'ground loop' between the antenna circuit and the power circuit.

What would fix this will vary depending on exactly where the problem lies.
Some of the possible causes include;
- Problem with the antenna amplifier (replace)
- problem with the co-ax cable, antenna to wall plate (replace)
- problem with the electrical supply ground spike (repair)
- problem with the household wiring (expensive repair)
- something else (?)

It may be a single one of these or a combination of factors.
It will depend on how handy you are as to which you might try tackling yourself but don't go near anything involving the 240V supply!!

The most simple solution is to remove the antenna amplifier from the chain, how is the signal quality and reception without it?

[M'bozo]

Glenny6766, on Jan 21 2011, 09:41 AM, said:

Is it time to call in a specialist?

Probably.

If the Austar satellite box flylead to the wallplate is unscrewed, is the hum still there with the antenna lead plugged in?

Also, what are the pictures on your analogue reception like when the hum is happening?

I fix most of these problems by either earthing the free to air antenna system, or changing the plug-pak for the masthead amplifier to a dc type. (If that is what is being used here.)



(No idea where you are located, that always helps when advice is being offered.)

[Millson]

Hey guys,

I've got a strange issue that I'm really hoping you can help with. About a year ago I connected my TEAC single tuner PVR to my Dell monitor with a HDMI/DVI cable. This has worked fine until last week when my monitor would not display anything. When I turn on PVR on the monitor comes out of sleep mode (orange light) and goes into normal/working mode (green light) but nothing shows on the monitor.

At first I thought my PVR had kicked the bucket so I've just bought a new DGTEC twin tuner PVR which has the same issue. Actually when I first turn on the DGTEC PVR I can see the PVR's initalising screen (DGTEC logo) on my monitor, but when the TV show starts to display the monitor goes black! I successfully connected the monitor to my PC to make sure its still working.

Apart from the $180 bucks I've forked out unecessarily on a new PVR this issue is frustrating the hell out of me! It makes no sense that the monitor worked fine for a year and now doesn't work?

Any help would be greatly appreciated.

[ninjaduck]

edited cos the spam seems to have been taken care of

Edited by ninjaduck, 22 August 2011 - 08:48 AM.

[skinflin]

can anyone help me i'm trying to get connect my topflied TF-7000 PVRt to my parasound halo C2 preamp for the life of me i can not get any sound from the C2 i get picture sound from the tv but that's it, here are somes pics of the connections from the C2, topflied plus lg tv
http://www.topfield-australia.com.au/downloads/TF7000HDPVRtb/pdfs/TF7000HDPVRt-Aus-DB15.pdf
http://www.soundandv...ound-C2-bck.jpg

[skinflin]

i forgot to add on the link for the topflied scroll down to section 3.2 for rear panel connection

Edited by skinflin, 26 April 2013 - 01:13 PM.

[Tazzy2Heads]

It  would help if you said what cables and system you are trying to connect.
For a true Digital sound you need to use a optical or coaxial cable from the PVR output to one of the optical or coaxial inputs on the
amp and switch the amp input to the correct input to either of 1-4 depending which input you are using.
You may have to tell the amp via the menu that you are using optical or coaxial Digital inputs
You may have to tell the PVR that you want to use the Digital output
If you have a HDMI cable from the PVR to the TV you could also source the sound from the TV's Digital Optical or Coaxial output for
the amp input.Someone with that amp may come up soon.
Tazzy.

[skinflin]

right now i've got rca audio from pvrt to tv  then the second rca audio from pvr to preamp i get sound from the tv put when i turn on the paraound no sound even when i use the digital coaxial and yes i've gone through the settings when i connect the coaxial digital from pvr to the amp the parasound recognize it straight away ?? i'll try a bit more

[Tazzy2Heads]

What happens if you unplug the RCA audio from the TV and plug them into say RCA input 1 on the amp and switch the amp to input 1

[skinflin]

tryed that no go, but i think i worked it out, as of now i have the pvr first audio to the tv then second pvr audio to the amp audio in then i went to the menu on the parasound put the gain on the output on the tv to max, not as loud as the tuner or dvd, but i think it might be the tv?? buy the way the tv volume is at max, it might be a dump question but would using coaxial digital cable be louder then using rca, [pvr to amp]

[Tazzy2Heads]

It still sounds a long way from right, you shouldn't have to have the tv volume flat out.
Is the volume on the PVR turned down or turned down too far by the volume control buttons on the PVR remote ?

[skinflin]

what i'm trying to do is when watching normal tv i like to have the sound come through the main speakers not just the tv speakers via the parasound amp in stereo

[skinflin]

if i turn the volume up on the set top box i can have sound coming from the speakers, but if i mute the top box it mutes the amp volume aswell, i'll just turn up the volume louder then the pvr. then it be all good. would it because the pvr as 2x audio outputs??

[Tazzy2Heads]

Have you read page 21 4.1.3 in the pvr manual re Dolby Digital sound settings etc ?this may influence the sound levels.
You should be able to mute the TV's speakers sound and still have sound from the pvr feeding into the amp input without touching the pvr sound level.
You will need to sort the Digital Optical or Coaxial cable connection side of it out to get 5.1 true surround sound out of your speaker system, the red/white rca's will only give you left and right stereo.
Most Audio problems and trickery are usually just menu settings on one or more of the devices concerned.
If you start by feeding the tv sound from the tv monitor outputs rca or preferably the optical out to the amp and proove that it's
working ok then feed the pvr outputs into the amp one step at a time with settings etc you get it in the end, otherwise have a talk
to the salesman at point of purchase.