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Toshiba 50H12 Rear Projection TV wavy screen

Hi, so here is the problem, I hope you can help. For a little while when I would first turn on the TV the screen was very wavy and distorted. After letting it warm up for a little while the picture was fine. However, the problem has only gotten worse now and no matter how long you let the TV warm up for, the picture does not get any better. The weird thing is when we hook up the TV thru the component hookup, the picture is still a little wavy at first but then after it warms up, it is fine. I have no idea what I need to do...I am a single mom with two kids and can not afford to hire a repair tech if I really don't have too!! Any help would be greatly appriciated.
Thanks in advance!!

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  • 4 more comments 
  • Shaney3181 Dec 11, 2007

    Nice comment, but not a great solution to my current problem.

  • pamela57 Apr 07, 2008

    We have exactly the same problem/same model. It started only when I played a DVD. It has gotten worse over time. Now the TV picture is starting to go bad, too. a repair guy charged 90.$ to look at it , then told us 2 weeks and 475.00$ to fix it. Pretty rotten deal for an expensive 4year old TV that cost so much. Won't be buying another Toshiba- that much I know. Haven't had it repaired yet- not sure what to do. Mite give up TV!

  • bauml May 29, 2008

    Same problem here, HD channels show up ok but getting worse, if anyone has a fix let me know

  • nateroo Oct 06, 2008

    I have the same problem...looks like someone mounted a ******** on the projector...If I turn off the tv, it would take 15mins for the wavy jitters to go away. so I left it on all the it doesn't go away at all...drivin' me NUTS!! scared to get it serviced because of the potential cost. I have a call in to some local repair shops to find out their insight on this model/problem. If it's decent, I'll post it here! Hard to figure out what to buy these days...even name brands like Sony have dumped on me. Always a gamble!!

  • teachrun8 Oct 19, 2008

    I have the same problem. Only mine is not wavy when I turn to the HD channels. Every other channel is wavy, even my DVD's are wavy when I watch them.

    I hope someone out there can help.

  • reynardfox Dec 04, 2008

    My set has same trouble. Only four years old. A friend who was in TV repair for twenty years diagnosed over the phone for me. Said it was either a bad capacitor on the horizontal sweep circuit or a bad fly back transformer... Paid $99.00 for a repair tech to check it out. Found ruptured capacitor on main deflection board (pd0074a)... Replacement boards no longer available... Must have board rebuilt. cost $531.00... Board came back from re-builder untouched. Sent back second time... I am still waiting... I bought this set because my last Toshiba lasted twenty two years... I guess those days are long gone...

    Good luck!!!



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There is a Hyper Module mounted right behind the video inputs board. in most cases you can replace the 10uf surface mounts carefully not to tear the foil. and the set will return to normal. or replace the H/M board. this board is soldered 4 tabs on bottom of main board and then pulls out. good luck list of caps cz52(may not have this cap).. cx261 cx270 cx230 cx178 c514 cx221 cx250 cx241 cx541 cx670

Posted on Jul 21, 2009

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Same problem here... Television manufactured Jun 2002. I had a Toshiba laptop hard drive take a dump on me several years back, I should have learned my lesson then.

Posted on Aug 15, 2008


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In general, these problems are usually caused by leaky output filter capacitors in either the low voltage power supply or, depending upon the type of waviness you're attempting to describe, it could be in the vertical deflection circuits (either the vertical oscillator or vertical amplifier). I would estimate cost to repair from $200 to $350 dollars, depending on how long it takes to find the problem. It most likely though is a component issue in the circuitry.

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