Same TV: Triax STB works but Walker STB doesn't?

paultf

Anyone come across this problem before?

Setup a Walker WP12DTB-R saorview box in living room - gets saorview channels + UK channels.

I had another Walker WP12DTB-R which I tried to setup on a different TV in a different room.

Working off the same aerial as the first room. Got Irish + UK channels before switchover.

* Full install - scan found no channels. Message: 'check reception from antenna'.

* Swapped scart cable and aerial cable. Another scan - no difference.

* Tried Triax 112 - worked - got all the channels.

* Swapped Walker boxes - tried the working one from the living room - same scanning problem - same message.

* Swapped Walker boxes around again - so the original one I was trying to setup in the new room that couldn't scan in the channels - I set that up in the living room and it worked. So the 2 Walker boxes work.

* I then tried setting the Walker box up in another different room - again the Walker box couldn't scan the channels but the Triax worked fine.

Anyone have any ideas on this one? Since the Triax box works that means everything is in working order. Also the Walker boxes work too but only on one TV in one location.

Am I missing something? Is there a certain setting I need? At the start of installation I don't think there is anything I am missing? (Active Antenna setting is off - what does that mean?)

Thanks. Any help much appreciated.

Paul

St Senan

Try this Press menu go to configuration and turn off Active antenna and then try to scan for channels.

paultf

Navarre wrote: »

Try this Press menu go to configuration and turn off Active antenna and then try to scan for channels.

I was doing all this at my parents house so I'll check tomorrow.

But during all the attempts today and during installation, the "Active Antenna" option defaulted to "Off" so I left it at that. But still didn't work on the problem TVs.

On the 'working' TV the same option was left to default and worked.

What is the "Active Antenna" option?

St Senan

Taken from page 16 on the user manual...

Active Antenna
Use “ ”/“ ” buttons to go to Active Antenna
Setting. The setting will be OFF as default. If you
want connect the receiver to an active antenna
that is an instrument amplifying the received
signal then you must change the Antenna Power
Supply setting to ON. The DVB-T receiver
can supply 30mA (5V active antenna output).
Please do not use a normal passive antenna
(do not short circuit the ANT IN connector) while
Antenna Power Supply setting is ON. This may
cause to a breakdown in your DVB-T receiver.

darth_maul

The signal power on the second TV must be below the minimum threshold of the walker boxes. What's the signal strength reading like on the triax box,
Active antenna is a the box passing 5v down cable to power a powered indoor antenna. Not the problem in this case, just leave off.

paultf

On the working TV this option is "Off".

I'll double check the settings tomorrow on the problem box but it defaults to "Off" during installation so I thought it would be OK.

The fact that both Walker boxes work on one TV but not on two other different TVs, and plus the Triax works on the two problem TVs - I can't figure it out.

paultf

darth_maul wrote: »

The signal power on the second TV must be below the minimum threshold of the walker boxes. What's the signal strength reading like on the triax box

OK. Never thought of that. I'll check tomorrow.

Both TVs are old - if that makes a difference. One, Mitsubishi Black Diamond, is at least 12 years old.

The other is a small Sony TV that I am temporarily using to check reception. 18 years old.

darth_maul

paultf wrote: »

OK. Never thought of that. I'll check tomorrow.

Both TVs are old - if that makes a difference. One, Mitsubishi Black Diamond, is at least 12 years old.

The other is a small Sony TV that I am temporarily using to check reception. 18 years old.

The model of TV is not going to affect the signal on a STB, I has to be a signal strength issue,

paultf

darth_maul wrote: »

The model of TV is not going to affect the signal on a STB, I has to be a signal strength issue,

Checked the signal strength and quality today.

On the TV that the Walker is working on:
(With Triax) Strength: 78% Quality: 100%

Room #1 Walker won't scan channels at install:
(With Triax) Strength: 54% Quality: 24%

Room #2 Walker won't scan channels at install:
(With Triax) Strength: 91% Quality: 100%
Why doesn't the Walker work here?

Checked in a room in my house where the Triax worked.
Strength: 66% Quality: 66-74%
Setup Walker. Same problem. Won't scan on install.

Am I missing something? Do Walkers not work on a lower signal yet the Triax do?

In the 2 rooms (parents house) the aerial cables were added later to the house. The aerial is outside on a telegraph pole so there is a long distance to run.

I am thinking of returning the Walkers for Triax?

Or is there an ampilfer/device that can be added to the cables in the attic?

darth_maul

paultf wrote: »

Checked the signal strength and quality today.

On the TV that the Walker is working on:
(With Triax) Strength: 78% Quality: 100%

Room #1 Walker won't scan channels at install:
(With Triax) Strength: 54% Quality: 24%

Room #2 Walker won't scan channels at install:
(With Triax) Strength: 91% Quality: 100%
Why doesn't the Walker work here?

Checked in a room in my house where the Triax worked.
Strength: 66% Quality: 66-74%
Setup Walker. Same problem. Won't scan on install.

Am I missing something? Do Walkers not work on a lower signal yet the Triax do?

In the 2 rooms (parents house) the aerial cables were added later to the house. The aerial is outside on a telegraph pole so there is a long distance to run.

I am thinking of returning the Walkers for Triax?

Or is there an ampilfer/device that can be added to the cables in the attic?

There is some major variations in your signal between rooms, you need to get that checked, a properly setup system should have similar signal strength/quality in each room.
Yes different boxes/models have different tuners inside that would be more sensitive than others.

My advice would be to get an installer out who has a proper digital meter, preferably one with a spectrum analyser to tidy up your system and get you setup properly

paultf

darth_maul wrote: »

My advice would be to get an installer out who has a proper digital meter, preferably one with a spectrum analyser to tidy up your system and get you setup properly

Thanks for that info - much appreciated.

Just one final quesion: do you think that because the Triax will work with the lower signal, that if I use Triax boxes instead of the Walker that would solve the problem?

Or even with a Triax, down the line with the signal not been great, there will be problems even with the Triax?