Adjusting H and V "scans" on an LCD tv

TC2crew · 22-01-2007, 23:50

I have a Panasonic TX26LXD52 and would like to adjust the "scans" to reduce the amount of "cut off". My old Panny CRT widescreen telly allowed me to do this in the engineering set up menu. I had it set up with no "cut off" at all. But my LCD telly has no such option in the hidden engineering menu. Does anyone know if it can be done?

There really is too much cut off on my set!

Nigel Goodwin · 23-01-2007, 09:50

There's no adjustment because there's no need for adjustment, the screen is digital and a set number of pixels tall and wide. It's always correct, so requires no adjustment - so there is none.

Depending what the broadcasters send out, and what your screen format is set to, will determine if you have black bars or not.

TC2crew · 23-01-2007, 15:03

I fully understand the concept of black bars, aspect ratios etc. That's not a problem. Your assertion is incorrect, there is overscan or "cut off" on all TVs whether digital, analogue, crt or lcd. It's not anything to do with aspect ratio, it's how far outside the edge of frame of the television screen the actual edge of frame lies.

Nigel Goodwin · 23-01-2007, 15:57

As I said before, and as you already know from the service menu, there is no adjustment for height or width.

TC2crew · 23-01-2007, 16:09

Just wondered if there was any other hidden menu that anyone knew about, obviously not sadly for me. Will just have to bequeath the Panny to a deserving home and buy another set that can be adjusted properly. Any suggestions?

soulboy77 · 23-01-2007, 16:17

So what you are looking for is an Ovescan adjustment. I've seen this mentioned in other forums re. Panasonic but can't remember if it was for a Plasma or LCD TV. In this case the Overscan adjustment was in a second hidden service menu accessed from the first by going to the last item and pressing hold.

TC2crew · 23-01-2007, 16:21

Splendid! I will try it later. Thanks! Fingers crossed

TC2crew · 23-01-2007, 22:41

No joy with that. Thanks anyway for the idea. Bye bye to the Panny this weekend. Anyone advise an LCD set that can be adjusted for overscan?

Nigel Goodwin · 24-01-2007, 10:13

Quote:

Originally Posted by TC2crew

No joy with that. Thanks anyway for the idea. Bye bye to the Panny this weekend. Anyone advise an LCD set that can be adjusted for overscan?

I refer you to my previous two posts!, I've never seen any such adjustments on any of the sets I've repaired - and manufacturers training courses state that they aren't included, because they aren't required.

banbury_oddball · 25-01-2007, 13:31

If you haven't already, try the AV Forums.

I wanted the engineer menu for my Tosh 32WL66. I have noticed though that there is a significant difference in the picture from SCART to HDMI. I can watch a channel via the Scart, then flick on to the HDMI input and you can see much more of the screen. More noticable as the DOG is in a different place. The top and bottom has a little more, but it's the sides where it is more noticable.

I wanted to see if there was an adjustment for the SCART connection via the service menu. I've got the service menu, but can't seen to scroll through the options never mind noting the setup and changing it. Prob for the best though !

Another example is DVD - I've got a test card DVD to help set the tv up - even has good old Test Card F, but for this I used TCW. If I connect via the scart, I can see a reasonable picture and everything looks fine. If I use my new HDMI dvd player, I get a bit more of the testcard on there just missing a bit off the top and bottom. Again the sides look fine.

So in answer to your original post yest there is overscan on an LCD tv. Most annoying. I used to watch tv via the pc and again there is no overscan at all when watching this way.

Good luck with your search.

crunchie · 26-01-2007, 09:57

My Panasonic 42TX60 plasma is too stretched vertically - I had the set ISF calibrated and the guy said the "V-size" needed adjusting but there isn't any way to do it on a Panasonic.

There MUST be some way to adjust the overscan - someone must know the secret menu that gets you there. Anyone, please??!?

TC2crew · 26-01-2007, 17:03

Quote:

Originally Posted by Nigel Goodwin

I refer you to my previous two posts!, I've never seen any such adjustments on any of the sets I've repaired - and manufacturers training courses state that they aren't included, because they aren't required.

Calm down mate, I'm not getting at you, or ignoring your information. I don't doubt the fact the manufacturers may well say there's "no need" for overscan adjustment. The fact is they are absolutely wrong in that assertion/assumption. That's my point. Would I be more likely to have joy with a plasma set? I seem to remember sopme of the plasma monitors we use at work have H and V adjustments in a menu.

banbury_oddball · 26-01-2007, 17:15

I used to have a Toshiba 32" CRT until recently and that had the H/V width and position settings in the picture menu and was great. Shame they didn't keep it with their LCD's.

As for Plasma's - can't help you, but sure there is someone around who has a plasma can confirm this.

Nigel Goodwin · 26-01-2007, 17:20

Computer monitors have adjustments as well, because you need to be able to adjust the sizes for different modes - but TV's don't seem to include it, as there's supposedly no need. If your's has a 'need' for this, then there's probably a fault on the set? - possibly software corruption?. As I'm not a authorised Pansonic Plasma engineer I can't get the manual, or any technical bulletins - or even see if they exist? (whereas I can for Panasonic TV's etc.)

Obviously, as the sets can vary the picture format both vertically and horizontally, it 'should' be possible to adjust the sizes. However, in all the sets I'm familiar with this isn't a service or engineering option - so is either burnt in ROM, or only adjustable by altering the sets software - which the manufacturer can probably do, via a jig linking it to a computer.

22-01-2007, 23:50	#1
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	Adjusting H and V "scans" on an LCD tv I have a Panasonic TX26LXD52 and would like to adjust the "scans" to reduce the amount of "cut off". My old Panny CRT widescreen telly allowed me to do this in the engineering set up menu. I had it set up with no "cut off" at all. But my LCD telly has no such option in the hidden engineering menu. Does anyone know if it can be done? There really is too much cut off on my set!

25-01-2007, 13:31	#10
banbury_oddball Forum Member Join Date: May 2001 Location: Banbury Posts: 1,299	If you haven't already, try the AV Forums. I wanted the engineer menu for my Tosh 32WL66. I have noticed though that there is a significant difference in the picture from SCART to HDMI. I can watch a channel via the Scart, then flick on to the HDMI input and you can see much more of the screen. More noticable as the DOG is in a different place. The top and bottom has a little more, but it's the sides where it is more noticable. I wanted to see if there was an adjustment for the SCART connection via the service menu. I've got the service menu, but can't seen to scroll through the options never mind noting the setup and changing it. Prob for the best though ! Another example is DVD - I've got a test card DVD to help set the tv up - even has good old Test Card F, but for this I used TCW. If I connect via the scart, I can see a reasonable picture and everything looks fine. If I use my new HDMI dvd player, I get a bit more of the testcard on there just missing a bit off the top and bottom. Again the sides look fine. So in answer to your original post yest there is overscan on an LCD tv. Most annoying. I used to watch tv via the pc and again there is no overscan at all when watching this way. Good luck with your search. Last edited by banbury_oddball : 25-01-2007 at 13:34.

23-01-2007, 09:50	#2
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	There's no adjustment because there's no need for adjustment, the screen is digital and a set number of pixels tall and wide. It's always correct, so requires no adjustment - so there is none. Depending what the broadcasters send out, and what your screen format is set to, will determine if you have black bars or not.

23-01-2007, 15:03	#3
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	I fully understand the concept of black bars, aspect ratios etc. That's not a problem. Your assertion is incorrect, there is overscan or "cut off" on all TVs whether digital, analogue, crt or lcd. It's not anything to do with aspect ratio, it's how far outside the edge of frame of the television screen the actual edge of frame lies.

23-01-2007, 15:57	#4
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	As I said before, and as you already know from the service menu, there is no adjustment for height or width.

23-01-2007, 16:09	#5
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	Just wondered if there was any other hidden menu that anyone knew about, obviously not sadly for me. Will just have to bequeath the Panny to a deserving home and buy another set that can be adjusted properly. Any suggestions?

23-01-2007, 16:17	#6
soulboy77 Forum Member Join Date: Jul 2005 Location: Herts Posts: 17,005	So what you are looking for is an Ovescan adjustment. I've seen this mentioned in other forums re. Panasonic but can't remember if it was for a Plasma or LCD TV. In this case the Overscan adjustment was in a second hidden service menu accessed from the first by going to the last item and pressing hold.

23-01-2007, 16:21	#7
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	Splendid! I will try it later. Thanks! Fingers crossed

23-01-2007, 22:41	#8
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	No joy with that. Thanks anyway for the idea. Bye bye to the Panny this weekend. Anyone advise an LCD set that can be adjusted for overscan?

24-01-2007, 10:13	#9
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Quote: Originally Posted by TC2crew No joy with that. Thanks anyway for the idea. Bye bye to the Panny this weekend. Anyone advise an LCD set that can be adjusted for overscan? I refer you to my previous two posts!, I've never seen any such adjustments on any of the sets I've repaired - and manufacturers training courses state that they aren't included, because they aren't required.

26-01-2007, 09:57	#11
crunchie Forum Member Join Date: May 2002 Posts: 593	My Panasonic 42TX60 plasma is too stretched vertically - I had the set ISF calibrated and the guy said the "V-size" needed adjusting but there isn't any way to do it on a Panasonic. There MUST be some way to adjust the overscan - someone must know the secret menu that gets you there. Anyone, please??!?

26-01-2007, 17:03	#12
TC2crew Forum Member Join Date: Dec 2003 Location: Hampshire Posts: 412	Quote: Originally Posted by Nigel Goodwin I refer you to my previous two posts!, I've never seen any such adjustments on any of the sets I've repaired - and manufacturers training courses state that they aren't included, because they aren't required. Calm down mate, I'm not getting at you, or ignoring your information. I don't doubt the fact the manufacturers may well say there's "no need" for overscan adjustment. The fact is they are absolutely wrong in that assertion/assumption. That's my point. Would I be more likely to have joy with a plasma set? I seem to remember sopme of the plasma monitors we use at work have H and V adjustments in a menu.

26-01-2007, 17:15	#13
banbury_oddball Forum Member Join Date: May 2001 Location: Banbury Posts: 1,299	I used to have a Toshiba 32" CRT until recently and that had the H/V width and position settings in the picture menu and was great. Shame they didn't keep it with their LCD's. As for Plasma's - can't help you, but sure there is someone around who has a plasma can confirm this.

26-01-2007, 17:20	#14
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Computer monitors have adjustments as well, because you need to be able to adjust the sizes for different modes - but TV's don't seem to include it, as there's supposedly no need. If your's has a 'need' for this, then there's probably a fault on the set? - possibly software corruption?. As I'm not a authorised Pansonic Plasma engineer I can't get the manual, or any technical bulletins - or even see if they exist? (whereas I can for Panasonic TV's etc.) Obviously, as the sets can vary the picture format both vertically and horizontally, it 'should' be possible to adjust the sizes. However, in all the sets I'm familiar with this isn't a service or engineering option - so is either burnt in ROM, or only adjustable by altering the sets software - which the manufacturer can probably do, via a jig linking it to a computer.

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Adjusting H and V "scans" on an LCD tv