disable SVM in a mits

ezc

Does anyone know how to turn off SVM in a 2002 Mitsubishi 55" HD ready tv? My model # is WS55819 ita a 2002 model.
I know you need to get into service codes to do this but how? & is it safe?

brettw22

No clue.......i'm curious though.....what's SVM?

Ron-P

Unplug the SVM wires directly off each of the three guns mother boards.....like nuking the site from orbit, It's the only way to be sure.

Turning SVM off via the service menu does not do the trick 100%. But, if you don't want to unplug it, I can dig up the service code info, it's floating around my house somewhere, with all my other Mits stuff.

Give me some time, [Arnie voice] I'll be back[/arnie voice]


Peace Out~:D

Ron-P

SVM = Scan Velocity Modualtion


Peace Out~:D

brettw22

Originally posted by Ron-P
SVM = Scan Velocity Modualtion

ya.....um....that doesn't tell me much.....

Elaborate please......

Frank Z

What exactly is the benefit to disabling the SVM thingamajig?

Ron-P

What SVM does is blur edge detail, turning it off will greatly sharpen edges. Get your read on HERE

I doubt you'll be able to use this code ezc as it is for a 2001 Mits ending in xxxx7. But, give it a try.

1. First, put in your AVIA disk and display the sharpness pattern.
2. Press MENU 8 2 5 7 on the remote
3. Press VIDEO until you get to 52 - VM (default is set at 2)
4. Press the up and down cursor keys to change the value to 0.
5. Press ENTER to save your changes.
6. Press HOME or MENU to exit the service menu

...and remember, the CANCEL button is your best friend when in the service menu. Hit it at anytime and no changes will be made.

If this does not work on your Mits, I can take a pic of the mother boards in my Mits which will show you the SVM wires to disconnect. It's very easy.

Another tweak that will greatly increase PQ is an electrical focus of the guns. Very easy, just need to make sure you turn the right dials otherwise Mits will need to come out and fix your set.


Peace Out~:D

ezc

Thanks Ron-P Ill try the code to see if it will work. Is it dangerous to make the change? Do I need to do anything else? Is there anything I need to look out for? Also what is electrical focus of the guns? Do you need special test equipment to do that? Also how much improvement would I gain from that?

begbie

It is very dangerous. There can be little room for error -depending on the video tweak. Better off going to some of the video forums to really make sure you know what you're doing.

Too often I'll see a poor schumck on a video-forum, who has done irreversible damage and has voided his warranty on doing so!

Ron-P

It is not very dangerous IF you are careful. The steps are very simple and there is always the cancel button. If you screw up your set, it is because you were not careful, period.

It is much easier to disable SVM by disconnecting it from the gun boards, you cannot screw things up this way and it is a 100% disable.

Myself, I've done the SVM disable via the service menu (then from the boards). I've also done the electrical focus, adjusted my geometry via the fine green grid, took the overscan from roughly 10% (factory setting) down to 4% and several other tweaks all through the service menu. It's impossible to screw things up, if you educate yourself first and take your time doing the mods. It's a good idea to go in, change some settings and hit cancel to get yourself used to what to do before actually making perminate changes.

As for the electrical focus, all you need is a small screwdriver. Once you pull off the front covers, there is a small black box in front of each gun. On these boxes are small dials. I need to look to remember exactly which ones to adjust, but this will really tighter up you images. A manuel focus of the guns is the best way to go, but takes several hours. The electrical will get you close and is the best way to start off.

I'll take some pics tonight and post'em tomorrow.


Peace Out~:D

ezc

Ron-P Thanks for the info! I turned off SVM last night & Used the Avia test pattern to check it. I have it set to 0 but ive read that some like having it set to 1. With the test pattern the black vertical lines looked more truer ( I guess thats what you call it) when set to 0. The service code for the 2002 model is menu 0157 & menu 0159. I didnt mess with anything else I dont want to screw up the set! I got to watch parts of some movies & the picture seems to be better but maby slightly softer. Overall I feel the picture is better with SVM off! Thanks

begbie

Originally posted by Ron-P
It is not very dangerous IF you are careful. The steps are very simple and there is always the cancel button. If you screw up your set, it is because you were not careful, period.

Those steps for that Mitsubishi tweak are simple but how about for brand "A" for model # "123" and calibration technique "XYZ" ?!

So in general and for those reading and don't own a Mitsubishi set- it will depend on the video tweak and the manufacturer. Mits are known to be easier to calibrate than others brands.

Calibration is NOT for everyone. Remember there are trained professionals who do this type of work day in and day out. When it's YOUR tv set that YOU are first working on, - of course you're gonna be careful, though sometimes too careful !

Having your set calibrated will certainly improve the performance of your set but it depends on how bad it was to begin with.