Question about Mitsubishi WS-55613 55" Rear Projection HDTV

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Horizontal lines in picture

My ws55613 has horizontal lines when we first turn on set. They disappear after a minute or two. This has been going on for a while, any suggestions?

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Re: Horizontal lines in picture

That's almost always due to RF interference from an electric motor. It doesn't even have to be close to your TV, just operating on the same circuit or near a poorly insulated wire, which acts as an antenna, injecting 60Hz (and harmonic) noise into the power supply.

If it's right next to the TV it will be even more pronouced because the RF interference resonates into the TV circuitry itself, not just the power supply to the TV.

Typically a high current AC motor like a vacuum cleaner, refrigerator, dehumidifier, air conditioner, furnace, etc.

Posted on Oct 18, 2007

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Mitsubishi TV had horizontal lines across the screen and rolls up

ONE: Yes, the speaker mounted close/near to the set can be a cause of mischief; please move it further away and see if that helps clear up the problem. But, you must keep it away for several days before you will know for sure because it takes some time to degauss all the internal parts that may have become corrupted by the magnets in the speaker.

TWO: Yes, any set can be repaired the question is cost and wisdom. Old sets are sometimes not worthy of the repair simply because of the likelyhood that another failure will follow soon after. A big screen always invokes a repair charge of $200 and up. After a few of these you will wish you had put all the money into a new set!

THREE: The lines are most likely a problem in the vertical blanking circuits of the set. These are horizontal retrace lines that are supposed to be blanked out during vertical retrace of the raster. Think of it as a paintbrush that scans across the screen painting thin lines and when you get to the bottom of the screen it goes quickly back to the top, but during that time the horizontal, which is many times faster, has made several sweeps; so it must be blanked out during the retrace. The repair involves finding the guilty parts and replacing them. Usually this repair runs over the $200 somewhat.

FOUR: Prior to calling in a service tech try a hard reset to see if that will recover any of the circuit degradations. Merely unplug the power cord and leave unplugged for 4 hours or more. It may help. Or, it may not help; but worth a try since is won't cost you anything.

If the set is over 5 or 6 years of age it probably is not a condidate for any expensive repair. On the other hand, it is a Toshiba - and they make a fine set.

Hope this helps. Let me know if you have further thoughts.

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1 Answer

Horizontal blue lines with a slight blue wash in the screen

Its because of Over Voltage of Screen (G2) to Blue CRT.
Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines.
If you select AV input to adjust that will be fine as you do not need to wait for dark-scene.

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Bad color wheel...have it checked by a quaified tech.....
Must have lamp code number to get color wheel #.............T.

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1 Answer

Had horizontal Lines replaced now have error 21 xray circuit

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Lines on tv

Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
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1 Answer

Horizontal lines

If this model has a "lint screen" or air filter, I would check to make sure the set is getting proper ventilation. Otherwise, you probably have a bad solder connection or capicators going bad, causing your symptoms. Hopefully you won't have to get a replacement Printed circuit board as they are quite expensive.

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