Question about Mitsubishi WD-52725 52". Rear Projection HDTV

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H Lines on the left side of the screen

I have horizontal lines going from the bottom to the top of my screen. they are in tight groupings and stop at exactly half way across the screen when when you watch to shows at once with pip one will show the lines and the other will not. any ideas? lines appear to be red and blue.

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Just in case you came across this - it is the light engine! $950 - thanks mits for complete junk

Posted on Nov 16, 2008

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Convergence lines are SLANTED. Red line is above


Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Apr 26, 2009 | Hitachi 53FDX01B 53" Rear Projection...

1 Answer

Convergence lines are SLANTED. Red line is above horizontal center on left side on screen and below horizontal center on the right side of screen. Also left of Vertical center at the top of the screen and...


did you check the six 3.5 pico fuses that are next to the ICs? They will often be open ( blown) when the ICs fail. Also check the two 5 amp IC protectors on the G board as those protect the two ICs so its possible they have blown also a 5 amp pico can be substituted for the two IC protectors.

Apr 26, 2009 | Sony KP-46WT500 46" Rear Projection...

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Thin red horizontal lines across screen


While looking at your TV, remove the bottom right speaker grill. There you will find a cover held by a couple of screws. Remove the screws and behind the cover you will find the "focus pack" which is a group of 6 adjustment screws. The top screws adjust (in order from left to right) the brightness of Red, Green and Blue.

What you will do preferably at night (or with the room dark) turn the top left adjustment screw (Red) all the way to the left and then gradually turn it to the right until the point you can see the retrace line and then turn it slightly to the left until the retrace line disappears. That's it! You can do this for all three colors - if need be. These do go out of adjustment every now and then. The 3 screws on the bottom are to focus the colors individually to minimize "bloom" on the screen. It's best to be in service mode on your TV when doing this OR open up the cabinet and cover (with something) the other 2 colors while you adjust the focus of the color you're adjusting.

Good Luck!

S

Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

Black horizontal lines


Sounds as if you have a bad capacitor in the horizontal deflection or video circuitry. You can spot a bad capacitor in circuit with a ESR meter.Hope this helps.

Jan 16, 2008 | Mitsubishi TS-5545 55" Rear Projection...

1 Answer

Horizontal Lines On Screen


horizontal lines = horizontal sync off . mitsbishi always seemed to have this problem .. on the older sets I would take the back off and inside deep on the board i would adjust a pot and sync it right .... and never had a recall, maybe your newer model has this too .. this little control,

but its a horizontal sync problem.

if no change the horizontal processing ic.

Jan 11, 2008 | Mitsubishi WD-52725 52". Rear Projection...

1 Answer

Had horizontal Lines replaced now have error 21 xray circuit


White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
Severe vertical jitter on picture, horizontal sides of picture ragged
Replacing the TDA4950 cured the fault
White line down centre of screen (top to bottom}
Replace C805

Nov 24, 2007 | Mitsubishi VS-60707 60" Rear Projection...

1 Answer

Green lines on my Sony projection


Those are called retrace lines and they are the result of the blanking pulse not having the desired effect. This could denote a problem in the Horizontal section of the TV. In this case the green gun is not being turned off as it goes back to the left side of the screen.

Sep 20, 2007 | Sony KP-57WS500 57" Rear Projection...

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