Question about Hitachi 50GX30B 50". Rear Projection Television

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Red cross hairs can only be adjusted side to side not up and down. Tech calibration mode red lines at top skew down and bottom ones skew up towards the center. I first tried to adjust the cross hairs. Second I removed front panel and hit the tech button on the left and tried to calibrate there but the red line would only adjust side to side not up and down.

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  • 129 Answers

Probably an open resistor on a convergence board check all of them .let me know

Posted on Jun 13, 2007

  • Luis Amado Jun 13, 2007

    and also convergece ic's
    thanks

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1 Answer

Exploded diagram


You don't actually adjust cross hairs, you adjust point of impact. You do this using the turrets located near the center of the scope. the top one will adjust height, the r hand one will adjust windage.

Feb 21, 2014 | Bushnell BANNER RIFLE SCOPEPower: 3-9X40 /...

1 Answer

How do you access the convergence calibration menu on a RCA P52926 Rear Projection TV


Hello
To access the convergence calibration:

Press the MENU button on the remote.

2. Press 3 to select the Screen option.

3. Press 4 to select the Adjust Projection TV option.

4. Press 4 to select the Advanced Convergence option (the
Advanced Convergence screen appears).

The green pattern is fixed. The red and blue patterns are adjusted to

the green pattern. The Red Convergence appears first by default.

5. Colored cross-hairs show the current adjustment position on the

grid. To move the cross-hairs to a different position, use the

CH+/- buttons on the remote to move the cross-hair highlight up

and down, and the VOL+/- buttons to move it right and left.

6. Use the arrow buttons to adjust the red pattern. Each press of

the arrow button makes a slight adjustment from the center of

the cross-hairs - you can press and hold the desired arrow

button to make a faster adjustment, and then make fine

adjustments with single presses of the arrow button.

7. Press the INFO button to switch to Blue convergence and follow

the steps above to adjust the blue pattern.

8. Press OK to exit. You will be asked if you want to save the
adjustments

Yes Saves adjustments.

No Returns to the Advanced Convergence screen allowing

further adjustments.
Clear Exits screen without making any changes

Note: Before you use the advanced convergence feature, you must
complete the previous steps to align the tubes

May 19, 2011 | RCA P52926 52" Rear Projection Television

1 Answer

How do I adjust the convergence properties on an RCA rear projection tv?


Normally on the RCA rear projection TV's you would bring up your menu and choose the Setup menu, then press OK on the remote. That menu would then have Convergence as a choice. Once that was chosen the next menu would give you the choice of either letting the TV run it's own Autoconvergence program, or you would select either Red or Blue convergence.

Choosing Red Convergence would bring up a Yellow cross-hair in the middle of the screen. If the Convergence was not correct you would see separate Green and Red cross-hairs. Once they were perfectly aligned you would again see one Yellow cross-hair.

Choosing Blue Convergence would bring up a Blue cross-hair in the center of the screen. If the alignment was out you would see 2 Blue cross-hairs. Using the Up and Down and Left and Right cursor keys you would adjust the alignment until a single solid Blue cross-hair was in the center of the screen.

May 15, 2011 | RCA Televison & Video

1 Answer

Im seeing duble words,how can i fix it?


Hi,
There should be a convergence adjustment on this set. It will have a "cross hair" type pattern
You adjust the beams so that the cross hairs turn white. I believe Green is not adjustable intentionally. The procedure is to adjust the vertical Red line until it alligns with the Green line. Then adjust the vertical Blue line until it lines up with the Red and Green. The line should turn White.
Repeat the procedure for the horizontal lines. When you return to regular viewing mode the double
images should be greatly reduced or eliminated..
Hope I've helped you,
Best Regards,
Mark

Dec 30, 2010 | Panasonic Televison & Video

1 Answer

I just moved my 42in. Toshiba rear projectiom Tv from my basement to the upstairs and now my convergence is off. The red tube cross is low on the manual adjustment and will not go up to the other colors.IT...


It sounds like you jostled the red CRT gun when you moved the set. If the convergence adjustment still moves the red cross hair the the circuitry is okay. Your red gun needs to be realigned. This requires a service call unless you want to attempt it yourself. It is fairly involved and requires some specific tools as well as using the service mode on the remote to reset the convergence after the gun is repositioned.

Dec 06, 2009 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

Red convergence out


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Larry Dillon, senior tech/tvrepairkits.com

Jul 05, 2009 | Samsung HCL5515W 55" Rear Projection...

2 Answers

Canoscan 9950f red line on scan


Try running a calibration. This is done thorugh ScanGear in Advanced mode. Once in Advanced Mode, in the Image Settings section there should be an option for Calibration (you may have to scroll down in this section to see it). After running the calibration, try performing a preview scan with nothing on the scanner glass. If the red line shows up on the preview now, then most likely the scanner needs to be serviced.

Mar 12, 2008 | Canon CanoScan 9950F Flatbed Scanner

1 Answer

Red convergence is bad.


Hi, you need to change the convergence ICs , STKs: and some resistors,low values; , after changing them, you will have to go into the service mode, to do some adjustments.that's it.

Nov 27, 2007 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Convergence


you have bad convergence ics

Apr 13, 2007 | Toshiba TP61H60 61" Rear Projection...

1 Answer

WS-55809 - Video pinched in center, distorted, yellow/blue/red glow


This doesn't sound like a programming issue. I had a very similar problem about 6 months ago and I fixed problem. I had cold solder joint on the video power board. It was the board in the middle. The power supply was to the right. The video board had a driver with a bunch of legs. About 7 solder joint where cold or loose. I solder the board and my mitsu wide screen was fixed. Hope this helps.
Andy

Aug 22, 2006 | Mitsubishi WS-55809 55" Rear Projection...

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