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Input Question

371 Views 6 Replies 5 Participants Last post by jaypb, Feb 16, 2004

shin0bi

Discussion Starter · Jan 21, 2004

Hi everyone,

I'm new to these forums, so please forgive me if this question has been asked already (I tried searching for an answer, but couldn't find one).

I have a Philips 30PW850H, and was wondering; does anyone know if there is a way to change the tint/hue, and sharpness settings on any of the HD/AV inputs, and if there is way, should I just leave them with their current values? Currently, my sharpness for both AV4 and CVI are quite high. Most of the information on the web indicates that if you setâ€™s sharpness is set too high, it can shorten the lifespan of your TV.

Thank you,

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Nightanole

· #2 · Jan 22, 2004

Sharpness will not kill the set early. However most sets come with the contrat firewalled at 100% and that can take a couple of years off your set. Tint/hue are dissabled on component on some sets. Never heard of a set not being able to adjust the other stuff.

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shin0bi

Discussion Starter · #3 · Jan 22, 2004

I wonder if Philips did this on purpose. It specifically says that neither of the HD component inputs sharpness or tint/hue settings can't be changed.

...

I wonder if these two settings are pre-calibrated to ISF standards?

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Stephen_Ri

· #4 · Jan 22, 2004

The unadjustable tint/hue on component is not uncommon. If I remember right, when a set does enable component tint adjust, this means the component signal has been converted to s-video before being displayed. This is what I gathered from one of the tutorials on DVE. I believe in Europe's PAL standard there is no tint adjust either. I would assume that the set is adjusted properly. Now the sharpness is a bit strange, but hopefully it is also set up properly.

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shin0bi

Discussion Starter · #5 · Jan 22, 2004

Thank you all for your input and help.

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sneals2000

· #6 · Feb 3, 2004

Quote:

Originally posted by Stephen_Ri
The unadjustable tint/hue on component is not uncommon. If I remember right, when a set does enable component tint adjust, this means the component signal has been converted to s-video before being displayed. This is what I gathered from one of the tutorials on DVE. I believe in Europe's PAL standard there is no tint adjust either. I would assume that the set is adjusted properly. Now the sharpness is a bit strange, but hopefully it is also set up properly.

Yep - the Tint/Hue control is, AIUI, only directly relevant to NTSC composite sources (though conceivably NTSC S-video as well). This is because the NTSC chroma encoding process can suffer from phase errors that alter the overall hue of the picture - the Hue/Tint controls allow this to be compensated for.

The European PAL system is more immune to phase errors (though at the loss of some vertical chroma resolution in most cases) Thus on PAL/NTSC TVs (certainly those sold in Europe) the Hue/Tint control is inhibited on PAL sources, and only active on NTSC ones.

A Hue control should be redundant on proper component sources - as there should be no hue errors to correct. (The processing required to allow for Hue adjustment would require the component inputs to be processed quite a lot...)

Additionally, it is not uncommon, again in Europe, for RGB sources (such as from set top boxes and DVD players) to also inhibit the colour or saturation control on TVs. (I guess because it is thought that the RGB sourced picture is being broadcast "correctly" - and also because saturation adjustments would require RGB->component->RGB conversion?)

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jaypb

· #7 · Feb 16, 2004

Just happened to meander across this thread after doing a search on sharpness and Philips. I recently purchased the same set and found the service menu on the web.

062596 and then the Status/Exit button will get you there. Under Smart Settings there seems to be a "Personal" submenu.......and in there is the Movie/Sport/Weak/Multimedia pre-settings that the TV comes with.....in addition to a "TINT" value for each one. I'm thinking of going BACK into the SM to see if I can "adjust" the sharpness settings for the pre-set modes and *maybe* see if I can change one of those settings to "match" my personal setting for AV4 and AV1.

It's worth a shot.

For further info, try this thread:

http://www.avsforum.com/avs-vb/showt...23#post3380623

There are 3/4 links that I put in here to various Service Menu posts from around the web.

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