"JIG" for Convergence on Hitachi 57SWX20b - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 12 Old 10-07-2002, 07:31 PM - Thread Starter
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Where does one get a "JIG" for doing green alignment in service mode on a Hitachi 57swx20b ?

Is this costly? I have no idea what a "JIG" is , but I'ld imagine it can't be too expensive.. should just be a layout of a bunch of lines or something !
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post #2 of 12 Old 10-08-2002, 07:24 AM
 
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Quote:
Originally posted by sthong
should just be a layout of a bunch of lines or something !
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post #3 of 12 Old 10-08-2002, 07:19 PM
 
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Quote:

Did you mean to post a response to the Hitachi "JIG" Question? There was no text in your post.

Thanks!

Steven
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post #4 of 12 Old 10-08-2002, 07:22 PM
 
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I meant you had the correct idea.

It is just a "layout with a bunch of lines" like you said.

it looks like a huge piece of clear graph paper.

you paste it on the set and match the green convergence grid to it.

You should first adjust overscan and focus before doing this.

It is meant to rebuild geometry from scratch.

there are other easier ways of doing it too... without the need for a jig.

What the problem or the objective maybey I can give you some advice.
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post #5 of 12 Old 10-08-2002, 07:36 PM - Thread Starter
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I'm just generally trying to get the best picture possible... and have some fun playing with the TV in the process and learning.

Oh.. yes, I'ld like to tackle overscan and have read a little about that.. however, I know that this throws off your geometry.. so wanted to be able to correct it immediately after it got blown out of proportion...

Would I need to buy this JIG? Can I make one myself? If so, to what measurements? Can I use strings somehow?

Any help would be appreciated!
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post #6 of 12 Old 10-08-2002, 07:41 PM
 
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You don't need a jig.

Geometry is easy to do....

I did overscan and then fixed my geometry without a jig...
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post #7 of 12 Old 10-08-2002, 07:48 PM
 
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post #8 of 12 Old 11-26-2002, 07:59 AM
 
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1. We Put up the display grid on the TV.
2. Placed masking tape around the screen
3. Measured from the top of the screen on the left side, marked all the lines on the masking tape, and took measurements of each line on the grid. Then took those measurements and marked it on the right side masking tape.
4. Adjusted the green grid to line up with each of those marks. Because of the uneven floor it would be very easy to put a slight bow in the middle, your eyes would try to compensate for true horizontal. So we used my laser alignment tool that I use for audio calibrations and reflected the beam across the screen. And made sure all the lines were perfectly straight.
5. Then we did the vertical.
6. Then we did the convergence. To do this I use a magnifying dome to magnify the grid so I can get it dead on. Especially nice with the Hitachi because the blue is difficult to see.
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post #9 of 12 Old 11-26-2002, 08:22 AM
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Can you recommend a PRO in the Rockville, MD (or Wash DC) that can do this and all kinds of fine tuning. Other than the simple AVIA type adjustments, I wouldn't mind seeing if the image on my SWX could be crisper.

CC service guy said "that's as good as it's going to get, and walked out w/o touching one thing... except the door knob on the way out. My foot almost connected though :)

~~~~~
RPTV = HIT 65SWX20B
DVD = PAN RP62S
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post #10 of 12 Old 11-26-2002, 08:45 AM
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Thanks, Mfusick. I've been lurking the forum for a few weeks, and all the great info from people helped w/ my purchase decision.

I'm taking tomorrow off, and will call Chuck.

I'm also going to call HIT Service Centers (listed on the HIT site) to see if they can do a better job than cc. Maybe I'll return the so far worthless cc service contract. I CAN'T BELIEVE that the guy just walked out. Anyway, an new set is being delivered to my house today after 12:40. We'll see if it's the set, or perhaps my expectations are too high.

~~~~~
RPTV = HIT 65SWX20B
DVD = PAN RP62S
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post #11 of 12 Old 11-26-2002, 08:49 AM
 
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could be high expectations and crappy signals..

Let it burn in a month before Chuck does his thing.
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post #12 of 12 Old 11-27-2002, 07:42 AM
 
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Quote:
Originally posted by Mfusick
1. We Put up the display grid on the TV.
2. Placed masking tape around the screen
3. Measured from the top of the screen on the left side, marked all the lines on the masking tape, and took measurements of each line on the grid. Then took those measurements and marked it on the right side masking tape.
4. Adjusted the green grid to line up with each of those marks. Because of the uneven floor it would be very easy to put a slight bow in the middle, your eyes would try to compensate for true horizontal. So we used my laser alignment tool that I use for audio calibrations and reflected the beam across the screen. And made sure all the lines were perfectly straight.
5. Then we did the vertical.
6. Then we did the convergence. To do this I use a magnifying dome to magnify the grid so I can get it dead on. Especially nice with the Hitachi because the blue is difficult to see.
Here is a picture
https://www.avsforum.com/avs-vb/attac...achmentid=4030
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