Question about Sony KP-57WS500 57" Rear Projection Television

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BLUE CRT for Toshiba 57H84

My Blue CRT needs to be changed. I would like to do this on my own . Please help

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Re: BLUE CRT for Toshiba 57H84 - Sony KP-57WS500 57" Rear Projection Television Projection Televisions

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Posted on Jan 11, 2008

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Have 57 " Toshiba projection TV there is way too much red in picture

TV has 3 CRTs, red, blue, green. Its possible that you have a bad blue or green crt. If that were the case the red would be prevalent and the pic would be reddish. The tv has a picture "level" adjustment that if done correctly could get it looking correct. Its probably best to have a tech. do it since you can make it worse if you do not know what you are doing, also there are high voltages present. Good luck

Oct 30, 2011 | Toshiba 57H84 57" Rear Projection...

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My toshiba 57 inch rear projection tv every once in awhile makes a loud pop similar to a spark noise and the screen either goes black or flickers. do you have any suggestions what is causing this??

THis could be one of the CRTs (Color Tubes) is bad or the high voltage is leaking somewhere.
Toshiba projection TVs have history of yoke problems.
My guess is one of the CRTs is arcing inside. This TV has 3 CRTs red, green and blue. Replacing a CRT is not easy or cheap to buy if you can find it. If you like this try calling a TV technician to track down the high voltage arcing. DO NOT TRY TO DO THIS BY YOURSELF.

Best of luck my friend.


Jun 12, 2011 | Toshiba 57H84 57" Rear Projection...

1 Answer

I just bought a used 57h84 and the pic is not real clear and dark and sometimes it seems to be alittle blue could it be the bulbs

If your TV looks 3D, warped, or distorted it likely has a convergenge problem. If however it just looks dull, washed out, redish, or if it looks like objects on the screen have halos the fluid in the lens has soured. You can search google for parts or you can get the parts with repair instructions from sites such as

Feb 23, 2011 | Toshiba 57H84 57" Rear Projection...

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Toshiba 57h84 sounds like it is turning on but the only thing it is doing is the red light on the power button flashes no sound on picture nothing

CK your hori output Transistor and small blue capacitor round it feed the hori output 2k high voltage cap if they are OK then Replace both of your STK ICs they will have part number on them. For Parts Call Mats 1-800-628-1118

Dec 08, 2009 | Toshiba 57H84 57" Rear Projection...

1 Answer

Flashing Power light

Ur power board ic inverter is dead.
U need a new board.

Aug 19, 2009 | Toshiba 57H84 57" Rear Projection...

1 Answer

Blue screen when watching tv

i contacted toshiba and this what they have recommended, i am concerned whether it will be cost effective to repair.

''The Blue CRT is being driven at maximum brightness, it could be
components in the associated drive circuitry or more likely an internal
Short circuit of the Blue CRT itself.

I have not rectified the problem but would be interested in the cost of repair if any can give me an idea

Hope this helps others as well



May 19, 2009 | Toshiba Projection Televisions

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Apr 12, 2009 | Toshiba 57H84 57" Rear Projection...

2 Answers

Loss Of Blue Color

The loss of blue could be one of 3 things. First of all if you are connected to a HD cable box or a HD sat. recvr. using component cables. Make sure the BLUE connection hasn't fallen out or is loose. The possibilities is the blue CRT (picture tube) itself or something in the blue CRT driving circuit.

Feb 25, 2007 | Toshiba 57H84 57" Rear Projection...

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