Hi all, Is there any way I can tell my Bv3 that I want to watch in RGB rather than CVBS?

The source I am using is my Inverto STB - which has the option of sending a signal as CVBS or CVBS+RBG (the latter of which I have selected). I can get to the B&O menu option  for Colour adjust which gives me the option of CVBS or RGB, however even when I select RGB as soon as I come out of the menu it seems to revert back to CVBS - how can I get the B&O to use RGB?

 

Thanks,

Jeddy 

Hi Jeddy,

 

Which scart connector do you use? Not every connector supports RGB.

If you use the first one (probably the second too) , which will support RGB, you'll notice the difference when you are switching between CVBS and RGB.

 

Beobuddy.

I'm connecting it to the left most one (looking from the rear) which I assume to be the first one. Yes, I do notice a difference when switching to RGB, but as soon as I hit stop or Exit it goes back to CVBS.

 My Tivo is connected to scart 2 (the middle one) and that does the same thing. You are however right in that scart 3 doesn't have RGB, this is confirmed by going into the Picture adjustment menu while watching scart 3 and the option 11, Colour Adjust is missing from the menu.

 

 Thanks.
 

hi

chek that the scart cabel in the stb is put in tv not vcr (only tv has rgb out) and that is setup to cvbs/rgb.

is the scart cabel full mont. cabel?(21 wire) 

the bv3 automatic shifts to rgb or s/vhs if der is signal else cvbs...

Hi,

The scart cable in the STB is definately in the TV socket and the STB is definately setup to output RGB+CVBS however you have raised a good point as to whether the cable is 21 wire, I assume it is as otherwise when I manually select RGB on the Bv3 I wouldn't notice a difference (or it wouldn't allow me to select it / show a picture), but will check later.

Thanks,
Jeddy

Jeddy:

...but as soon as I hit stop or Exit it goes back to CVBS.

Maybe a silly question, but did you press GO to store the setting before leaving the menu? 

I would suggest you check that your SCART cable is a fully wired version

Maybe a silly question, but did you press GO to store the setting before leaving the menu? 

 There's no such thing as a silly question when you are trying to help somone who doesn't know much!

Indeed I have tried selecting RGB and then selecting Go and then List / Exit to get back out of the service menu but to no avail.

I would suggest you check that your SCART cable is a fully wired version

I've just checked the cable and it has 20 pins - I assume the 21 referenced above includes the surround as there is only space for 20 pins. Do you get cables with the full complement of pins but without matching wiring inside the cable, if so is there a way to tell if mine is fully wired inside?

 Thanks,

Jeddy
 

Jeddy,

You do indeed get cables with all the pins in the plug, with some only part wired, in fact it is the norm to have all the pins in the SCART plugs, what normally gives it away is the size (diameter) of the cable. But the only full proof way is to either open the plug or check it with a meter.

However, if you have brought a quality cable, then it would normally have all the pins connected.

Thanks Keith,

Meter out, cable checked, all wires appear to be present and correct, each pin on one end connects to a pin on the other end.

Is there anything else I could be doing wrong, could this be a s/w version issue or do I potentially have a h/w problem with my set?

Many thanks,

Jeddy
 

Why don't you cut the lead on pin 19/20 ?

The only option the BV3 has, is then the RGB signal. I know, it isn't the nicest solution, but it tells you if the STB sends out a RGB signal all the time.

Well the problem is on more than the STB (scart 1 from Inverto PVR) as scart 2 (Tivo which is also setup to send out both) does the same thing.

I'm also suspicious about the set as I can tell the difference in the picture when I manually go to RGB, it just doesn't maintain the setting - it's not like it isn't even working when I manually select RGB.

Breaking the cable is a possible diagnostic option, but not one I'm too keen on adopting - although thanks for the advice about which pins are used for CVBS.  

Thanks,

Jeddy 

Jeddy,

I have been thinking about your interesting problem

As you have talked about your BeoVision 3 having three SCART sockets it means it is a 32" version because the 28" version only has two SCART sockets (VTAPE & AV)

Your sockets left to right looking from the back are:-
V.TAPE which has the SCART wired with CVBS in/out, RGB in (automatic 16:9 sense (pin-8), B&O AVL)
AV which has the SCART wired with CVBS in/out, RGB in, S-VHS in/out (automatic 16:9 sense (pin-8), automatic S-VHS configuration, B&O AVL)
DECODER which has the SCART wired with  CVBS in/out (automatic 16:9 sense (pin-8))

So you can only use the V.TAPE & AV SCART socket for RGB input

Now, when looking at the circuit it appears to auto sense which signals are present on the SCART, but you have stated in a previous post that when you set your STB to RGB it also keeps sending CVBS and that may be the source of the problem.

So, the suggestion by Beobuddy to cut pins 19 & 20 frankly is a good proposal because it will show two things

1. The STB is really sending RGB which we are both sure it is, but this is a double check
2. The auto sense may take the CVBS by default if both signal exist, taking the CVBS away will force it to RGB

Why not try it and get back to us, you don't have to cut the wires, in most SCART plugs the pins are removable, if you are unlucky enough to have fixed pin, then you will have to cut the wire and resolder it after the test.

 

Firstly yes, 32".

ok, so I cut the wires going to pins 19 and 20. I still get sound but I'm now getting funny things happening with the picture - by which I mean sometimes it looks like the horizontal hold has gone (picture scrolling right to left) and other times you can't even work out what the picture is (diagonal lines of colours on the screen scrolling up the screen). I've tried this on both the STB and the Tivo and they both do the same thing.

I've checked the cable with my multimeter and there is still a connection between pins 17-18 and 18-17.

This doubtless proves something but I'm out of my depth here so am going to need you experts to tell me exactly what it proves please.

Thanks very much for your help so far guys, much appreciated.

Jeddy

 

Jeddy,

Your answers are very interesting, but raise more questions than it answers. I think we need to give more thought to this problem, I will get back later after I have done a bit of research.

You can not cut the pin 19/20 that's used for synk...

all diveses allways send cvbs at all time...

bang1:

You can not cut the pin 19/20 that's used for synk...

all diveses allways send cvbs at all time...

I think thats on the Beolink 1000, I have the Beo 4 - or is that accessed possibly from a hidden list menu?

Thanks,

Jeddy 

bang1:

You can not cut the pin 19/20 that's used for synk...

all diveses allways send cvbs at all time...

 

As I remember pin 19 and 20 (Video in/out)  is used for Composite video. It's a complete videosignal which includes the sync.

RGB doesn't need that specific signal on pin 19/20.

What I would do is:

Attach a coax cable between the RF out from the STB to the Avant.

Tune in on the frequency from the STB

Control the STB with it's own remote and enter the settingsmenu, set it to RGB again and leave it there.

Switch back to the STB (DTV/Sat or whatever you've named it) and see if you're get a normal picture.

If not, I do have some doubts about the cable. The three leads from RGB alone should do the job.

the tv use the cvbs signal for sync on RGB...

no sync = no pic... and you only get a rolling picture

is it in tv menu or service menu you find the RGB setting? 

What are you looking for in the picture to se if it’s RGB or CVBS that’s on ?

The only thing that’s a sign on its CVBS, is if you look carefully on letters in text on the picture, there is some glitter after the letters...

Jeddy,

Based on your feedback it seems that the BeoVision IS receiving RGB from your STB, the picture will not be viewable because of the lack of sync pulses as others have pointed out, but in your answer you do state that you DO get a picture, albeit rolling etc, so cutting pin 19 & 20 has proved that.

So, we can now be sure that the STB is sending RGB and the BeoVision 3 is processing it and can display it.

However, when CVBS is present it appears to default to that rather than RGB regardless of settings.

So, my conclusion based on the information you have provided to date is that your cabling (subject to you re-soldering pins 19 & 20) and your STB's are fine and the problem relates to the Beovision itself its software or setup.

So, the following questions come to mind:-

1. How old is your BeoVision 3-32 ?
2. What is the software version of your TV, You can either look for a small label on the back of the TV or go into the service menu under "Monitor" ?
3. Has your BeoVision 3 ever worked in RGB mode ?

 

Jeddy:

I think thats on the Beolink 1000, I have the Beo 4 - or is that accessed possibly from a hidden list menu?

I never used this command but have seen it in the LIST menue of the Beo4. 

Keith Saunders:

Jeddy,

Based on your feedback it seems that the BeoVision IS receiving RGB from your STB, the picture will not be viewable because of the lack of sync pulses as others have pointed out, but in your answer you do state that you DO get a picture, albeit rolling etc, so cutting pin 19 & 20 has proved that.

So, we can now be sure that the STB is sending RGB and the BeoVision 3 is processing it and can display it.

However, when CVBS is present it appears to default to that rather than RGB regardless of settings.

So, my conclusion based on the information you have provided to date is that your cabling (subject to you re-soldering pins 19 & 20) and your STB's are fine and the problem relates to the Beovision itself its software or setup.

 

I agree with Keith's thinking. It becomes a bit more logical.

A small aspect about the RGB. For a year ago I made a cable myself to provide a beamer with RGB.

Only the 3 leads RGB and the each ground were used and fed into the VGA connector of the beamer. I had a clear no scrolling picture. So I concluded that only RGB would be enough if there is a sync in one of them.

So I was also thinking that because there is a sync in the composite signal and there isn't one in the RGB signal, the BV3 switches back to the composite signal. Or I am I totally wrong?

Till now I was assuming that RGB doesn't need an extra accompying (wrong spelling?) signal to synchronice the video.

Maybe an idea is to look for an update for the Inverto. maybe it helps?

I own an Avant 32, which has the same chassis I think, and I will try later today if I can "create"the same problem by using an external DVD player or the STB (Topfield).

Keith Saunders:

Jeddy,

Based on your feedback it seems that the BeoVision IS receiving RGB from your STB, the picture will not be viewable because of the lack of sync pulses as others have pointed out, but in your answer you do state that you DO get a picture, albeit rolling etc, so cutting pin 19 & 20 has proved that.

So, we can now be sure that the STB is sending RGB and the BeoVision 3 is processing it and can display it.

However, when CVBS is present it appears to default to that rather than RGB regardless of settings.

So, my conclusion based on the information you have provided to date is that your cabling (subject to you re-soldering pins 19 & 20) and your STB's are fine and the problem relates to the Beovision itself its software or setup.

 

I agree with Keith's thinking. It becomes a bit more logical.

A small aspect about the RGB. For a year ago I made a cable myself to provide a beamer with RGB.

Only the 3 leads RGB and the each ground were used and fed into the VGA connector of the beamer. I had a clear no scrolling picture. So I concluded that only RGB would be enough if there is a sync in one of them.

So I was also thinking that because there is a sync in the composite signal and there isn't one in the RGB signal, the BV3 switches back to the composite signal. Or I am I totally wrong?

Till now I was assuming that RGB doesn't need an extra accompying (wrong spelling?) signal to synchronice the video.

Maybe an idea is to look for an update for the Inverto. maybe it helps?

I own an Avant 32, which has the same chassis I think, and I will try later today if I can "create"the same problem by using an external DVD player or the STB (Topfield).

With regard to the Sync'ing of the picture with RGB, the sync signal can be seperate, appear with the blue lead or as with VGA have two seperate Hsync & Vsync signals along with the RGB, that is why it can often be difficult to fully understand the causes of RGB problems. In the case of most set-top boxes RGB and CVBS are provided together and that is certainly what your BeoVision 3 is expecting.