Question about Toshiba 42H81 42" Rear Projection Television

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Screen keeps turning blue with no sound or pic.

I took front bottom cover of tv and the problem has gone away and the pic no longer keeps diappearing so i think the tv was over heating and automatically cuuting off, so there can you please suggest how to over come the problem.

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  • riaz ahmed Jun 29, 2006

    any suggestions

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It certainly sounds like you have a component heat issue. Someone with knowledge of proper TV safety needs to do the following. Using a heat gun heat components until the problem appears. Using cold spray, available in any electronics store, cool individual components until the problem goes away. When the problem disappears the component which you just cooled is the problem and should be replaced. This will take patience and time as the heating and cooling process is not instantaneous. Also you should perform the heat/cool cycle on the suspect component several times to verify that it is bad. Keep in mind also that there could be more than one component causing the problem. Concentrate on power components first such as transistors and ICs then capacitors and resistors. You could even have a cold solder joint so don't overlook them. It may pay to inspect all solder joints first with a magnifier as you may find the problem and be able to avoid the heating/cooling of components. Patience and diligence is the key and remember safety. If you do not know the proper safety procedures get someone to perform the tests who does. Good luck.

Posted on Jul 12, 2006

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1. My Sony KP-57WS500 TV is turning blue after abut 3 minutesof operation. It stays that way for about 30 miunes and comes back with pictures again, but with predominatly blue color. 2. Sometimes the TV...


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Jul 05, 2010 | Sony KP-57WS500 57" Rear Projection...

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I have a Sony KP 51WS500. When I turn the TV on, the picture is beautiful. However, after 1-2 minutes, the picture "smears" and I have red horizontal lines everywhere.


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Free big screen, is it worth it to fix?


take the front cover off.two hidden screw at each corner or on the sides .now take off cover in middle of set.two the right you'll find a small box , it will have 3 adjustments on the top and three more at bottom.the bottom ones are your screen controls.the middle is your green and on the right is the one you turn counter clock wise.warning ...turn that control a hair .that will solve the problem


mr.tv.inc
1-866-217-6788 harry

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Blue Screen and TV shuts off


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Please post me on this as well. My Sony just turned 4 yrs this Jan and just last week it started having the same problem. -Thanks!

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