Question about Hitachi 61SDX01B 61" Rear Projection Television

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Lines keep scrolling down.

Im having lines scrolling down the tv screen and dont know how to remove them. Sometimes the lines moves fast, sometimes they move slow. The lines are bloggy white.

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Re: lines keep scrolling down.

I had this same problem and unplugged the TV from the a power strip and plugged it directly into the wall... problem solved.

I read elsewhere that this is called a "ground loop."

Posted on Nov 28, 2008

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Mitsubishi 62725 lines scrolling in picture

Try first a DVD etc connected to a rear audio and video input, that may rule some things in or out.

Set does have a soft reset but it is unlikely to help for this issue

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The menu screen keeps popping on and off the tv screen..even took the batteries out of the remote..same!!

You need to Clean all of the Front Panel contact switches with contact cleaner.
Power/Vol- vol+ Ch- CH+ Menu.

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Toshiba projection tv with lines on screen

I have seen a lot of sets where the problem only happens when the set is first turned on---99% of the time one of the two STK-392-110 CONVERGENCE chips this set uses is Flakey--intermittant---The only way to know is replace both of the convergence IC's and see what you have---a bad IC can cause the set to shut down---and sooner or later the set will just shut down and not come on at all.

Let me know if you need more information about this type of repair as I have done hundreds of sets with this type of problem----every one I have ever seen where the convergence was intermittent----replacing the two IC's cured the problem.


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Mitsubishi VS-50707 screen is jittery when it first turns on

Sounds like the verticle circuit is failing a honest shop will take of this for you around 180-230 if you want to do yourself youll need a iron and some filters and an verticle ic

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You have a defective light engine. Contact RCA support. Sometimes they will warranty these even after the 1yr warranty has expired.

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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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Black line down the center of the tv wont go away

Sorry, justindorval;
I did not complete my questions.
4. Does line move when the channels are changed?
Good luck, big IRISH. ps let me know, I'll more happy to help you.

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1 Answer

Lines across the screen

the dark lines could be what is called hum bars these are caused by ground differences between cable and your AC ground. check to see if these lines appear using a dvd and removing the cable from the cable box. if the lines disappear then call the cable company and your electricain. in the mean time you can use a plug adaptor that is the 2 prong (ground less) until you can have the problem fixed. but don't use the adaptor as a fix, for your TV is a computer and needs proper grounds.

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