Question about Toshiba 42H81 42" Rear Projection Television

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My project screen is blurry for about thirty minutes and then clears up

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Could be a color wheel going bad or there is a Factory Service bullet that says :
Remove the MVUP13 Hyper Module from the TV chassis, remove
the top shield and replace the 10uf, 16v capacitors using Part Number
24619040 as shown in Figure 1. It’s recommended that all of the
capacitors identified in Figure 1 be replaced. (Note: These capacitors are
low impedance surface mounted aluminum electrolytic capacitors. Care
should be taken to avoid damaging the PCB while replacing these
capacitors.)
You should call a good TV Tech to do this repair

Posted on Aug 02, 2009

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Posted on Jan 02, 2017

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1 Answer

Blurry at first then when it warms up the distortion goes away


Most of the Toshiba sets of this age had problems with a board inside that gives lines/noise left to right for several minutes and then clears up--as time goes on the warmup takes longer and longer---bad Hyper board with about 10 tiny surface mounted filter caps that dry out.

Part is not available and two options--either have a shop repair it or try it yourself---takes above average skill to remove board and replace all ten caps.

Shops will if they will attempt this usually get over 200 for the repair.

Oct 25, 2012 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Hello, my 55513 tv when turning it on was blurry. after a few minutes it became clear. shut off and came back about 3 hours later and it was blurry again for about 10 minutes. about 10 minutes later it...


in the customer menu select convergence when set acts up---look to see if grid of lines is skewed, see some photos and let me know if your problem anything like this..........
4_8_2012_1_08_59_pm.jpg4_8_2012_1_09_27_pm.jpg


4_8_2012_1_10_19_pm.jpg

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1 Answer

Blurry picture


convergence problem...very common. An excellent TV, well worth repairing!

Jun 03, 2010 | Mitsubishi WD-52525 52" Rear Projection...

2 Answers

42" sony projection with blurry picture


Remove front bottm panel and behind it should be the Focus/Screen control block replace it.
Mats 1-800-628-1118

May 09, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Lines on both sides of screen blurry images. Sometimes when I turn it on It has very bad lines, but it clears up in a few minutes.


Ur convergence is dying,well be dead,know how to solders?Must replaced convergence ICs and all it resistors.Tries websites Tv repair world.com,Tvrepairkits.com for the convergence kit.

Jan 21, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Blurry Screen


The bottom is blurry because some of the anti-freeze (clear ethelyne glycol) has leaked out. This anit freeze needs to be replaced or the CRT will get too hot and break. It will also clear up the picture.

Dec 05, 2006 | GE 46GW947 46" Rear Projection Television

1 Answer

Screen goes from blurry to clear to blurry


The first thing to check is for loose conections,the problem is related to the high voltage but it can start in the main board with one component loose,when the high voltage is developed it goes to what is call the distributor block,a lot of sets have the focus and screen controls coming out of this block for each picture tube,this block might be bad but before we go to him we need to check everything is solid in the main board.If you are familiar with electronics you can remove the back cover and tap the chassis with a wooden or rubber handle to see if the set reacts,if it does you need to be atentive what area makes it react and flip the board to do some resoldering,If you are not too familiar with tv service you need the assistance from a servicer.Let Us know how it goes or if you need more information.

Oct 27, 2006 | Zenith H32G48S TV

1 Answer

Picture is blurry


it sounds like the focus block or flyback is bad.sometimes you can put nail polish on the adjustments controls to make it stay.usually they are marked from the factory with white marks check and see if they are aligned.but be sure somebody with tech-skills help you.the flyback usually has a screen & focus control.(the big red wire to the tubes or block)

Oct 06, 2006 | Zenith Z46Z83D 46" Rear Projection...

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