CurtPalme.com Home Theater Forum

bigedtheman · Joined: 22 Dec 2009 Posts: 14

i have a hitachi 57 inch rear projection model 57f500a.bought new in 2003 work well up on till now picture normal text blurry .
need info on how to repair .also looking for service /repair manual/ or any help ?

**AnalogRocks** · Posted: Wed Dec 23, 2009 1:04 am Post subject:

Stand by... Mac will be all over this like sauce on spaghetti.

And welcome to the forum.

bigedtheman · Joined: 22 Dec 2009 Posts: 14

thanks for the welcome i feel at home now Smile

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

I'm glad you posted on here. I really don't like being PM'ed just for a service manual, especially by someone who is not a usual poster on here. Give me a little time and I'll see what I have. I'm right in the middle of something here. I got one of them there digital projectors spread out all over my table and dont want to loose my train of thought. Smile

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Ok. Digital is together and running, so where was I? Oh yea. Can you post a picture of your problem please.... Mr. Green

I need to see what this one looks like.

bigedtheman · Joined: 22 Dec 2009 Posts: 14

pictures

bigedtheman · Joined: 22 Dec 2009 Posts: 14

picture 2

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Yep, looks like focus problem. Without getting real deep in this just yet, try adjusting the electronic focus adjustments. Pull the front grill off. There is probably a door there that is screwed on. Remove that and at the top center you will see the screen and focus block. Bottom row of adjustments are the RGB focus, in that order. Go into the magic focus and set it to manual, then separate the red and blue grids from the green. Now go to the focus adjustment block and see if you can focus all 3 color grids. If there is not enough adjustment to bring in the focus then post back with the results. I'll check back in the morning.

bigedtheman · Joined: 22 Dec 2009 Posts: 14

Hi Mac,

I need help. I'm into the manual focus and see a white grid. I can move the cursor around while it is white, but when it is red or blue I can't move it around the grid. How do I separate the red and blue grids from the green. I don't see the grids changing color. If I press the select button, the cursor changes from white to red, then blue and back to white. I don't see any color change in the grid and not even a green cursor.
I see the six controls, is it the bottom row that I'm working with?

thanks for you help. I'm attaching a picture. Mad

ED

bigedtheman · Joined: 22 Dec 2009 Posts: 14

thanks mac ..... 95 percent better .adjusted red blue did not see a sperate green grid .pic attached.is there a way to go back to factory settings. changed these manual when the blurry problem started want to go back to factory setting???

bigedtheman · Joined: 22 Dec 2009 Posts: 14

this screen is the only one thats not sharp

bigedtheman · Joined: 22 Dec 2009 Posts: 14

thanks mac your the best tv watch able now thanks again. i have one other ?what the purpose of the top row of control there mark screen r g b do they need to be adjusted???

thanks for your time and help
ed

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

The screen controls are for setting the black level. You probably just want to leave them alone unless you know what your doing.

To separate the colors in the grid you put the white block in the center, then change it to red or blue. Once it is a color you use the 2,4,5,6 buttons to move the parts of the grid. This is how you converge to 3 colors on top of each other correctly.

As for that green focus, is the adjustment turned all the way in one direction to get it there? Or is that the best it gets without getting to the end of the adjustment?

bigedtheman · Joined: 22 Dec 2009 Posts: 14

thanks mac will leave top alone.how can i reset color back to factory settings?

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

bigedtheman · Joined: 22 Dec 2009 Posts: 14

magic focus work fine when tv 1st started get blurry i adjust contrast color etc with remote .want to put back to before i change them . is the auto color what does that ??? tv looks good ad just green control some more.

thanks mac thank you

ed

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

I dont think there is a default setting in the menu. Frankly I would not want to default contrast and color anyway. Just adjust it as to how you like it.

Are you saying your satisfied with the outcome and want to leave it at that?

bigedtheman · Joined: 22 Dec 2009 Posts: 14

what else can be done??

**AnalogRocks** · Posted: Thu Dec 24, 2009 12:46 am Post subject:

By the look of it you could use a lens cleaning?? Can you see the halo around everything or is that just the way your camera took the pictures?

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Well I'm still not thrilled with your image. But I would have to see an image of the grid pattern with the colors separated to make any further suggestions.