Question about Toshiba 57H94 57" Rear Projection HDTV

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57h94 i have sound but no picture have had about 4 years with no problem tv was left on all night and now no picture? i saw the comment on the fuse where can i find this. also is there a bulb in the tv anywhere ?

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Not much help here. The Toshiba 57H94 is CRT based unit and does NOT have a lamp to burn out. CRTs rarely "burn out" - especially all three tubes at once. Not sure if there is a user-serviceable component, such as a fuse, that would correct this problem. Proceed with caution if you feel compelled to go inside the set. Very high voltages are present, even if the TV is unplugged. Unfortunately this sound like a service call issue. 

Posted on Dec 28, 2008

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Toshiba model#57H94 dead set push power switch nothing want start up dead main ac fuse check good.Sam's Tv Service any help will be appreciate. Thanks


Check hori output and small blue high voltage capacitor 2k that feeds hori output transistor.
If these componets are OK then replace Both of the STK ICs they are big black ICs and will have PN# on them.example STK392-110.
Mats Electronics has ICs 1-800-628-1118
Encompass Parts Distribution has Free Service Manual for this Model# 57H94 you can print it out online.Go to their website.

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I have a toshiba 57h94 and when i turn on the tv i can hear a clicking sound, but no picture comes on. also, you can still hear a fan blowing.


You may want to check and see if the lamp is bad. On the left lower side there is a lamp door.
there is usually a knob screw or a phillips screw that keeps it in place. Open the door, remove the retaining screws for the lamp and pull the lamp out. Most of the time it is shattered and easy to tell it is bad. There is a part number on the lamp housing. If you can not find one local to you call
1800-631-3811. This the Toshiba customer service line and you can order one from them. I would expect to pay around 175.00 and 200.00 for the lamp.
I hope this helps,
skyassoc

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High voltage problem on deflection board, you can try turning up the screen voltage on the focus block which is only a temporary fix. Eventually you will need to get a service center to repair the deflection board...... focus block is in the front of the TV you will have to remove the front cover bezel...
http://tvtechwork.webs.com/

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