Question about Toshiba 50H81 50" Rear Projection Television

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1999 toshiba rear projection tv blinking red light after moving

My inlaws gave us their 1999 toshiba 55 inch rear projection tv for christmas, it worked fine with no problems before moving or ever before that. we loaded it on the trailer screen down on a few blankets and drove it to our house about 8 miles away. i went slow and didnt hit any bumps that i know of. we brought it inside hooked everything up and it wont turn on. the only thing it does is the red power light blinks. its had crystal clear reception and no color problems since they bought it.

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This might be a tube leak check for fluid on the necks of the tubes with your hand. if none you might have a faulty protect chip- common-
forgot the exact location but it's on the main board, it's a 16 pin chip as i remember and it is a quad op amp. if you hold your finger across the pins underside it will turn on and stay on as long as your finger is there, if so replace the chip

Posted on Dec 26, 2008

  • Jeramie
    Jeramie Feb 09, 2011

    terrible advice! NEVER put your fingers anywhere on the board while it is powered up. Some capacitors can hold over 500 volts in them and that would make for a bad day.

    The chip you are referring to is z801 and simply running a jumper wire across pin 12 to the ground will help diagnose the problem.

  • A Schneider Feb 09, 2011

    as a toshiba trained certified tech with over 25 years of experience this is a quick and easy
    way for a guy with-out a scope to trace down the fault, no soldering. i suppose you did not notice i didnt say to put a finger across a cap as this would not be advised. as this unit has high voltage present in the tubes in excess of 25 kv i dont advise playing around with the high voltage there either.i assume the reader to use common sense when ever taking any advice especially free advice

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