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I have a Toshiba 42wlt58 and it only powers on intermittently. There is no standby light until it does power on. It stays off more often than on. Once its on there are no problems. I have taken the back off and cannot see any bulging/blown caps. I have do not know how to test the capacitors in circuit or out. There is a clicking noise everytime I plug it in. Thanks

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Sorry,could be anythings,parts wise in the power supply board.Check the A/C power cord for damages,by shakings or flippings it around while the tv it on.Tries resolders all the transformers,capacitors and the power a/c socket on the board.These are the major points,power comming in and sustance the tv power.Or tries websites like, to buy a whole refurbush power supply board for the replacement.

Posted on Sep 29, 2010

  • andrew richards May 20, 2011

    hello, this is a common fault with the toshiba 42WLT58B , 37WLT58B , 32WLT58B lcd tv range,
    the problem is the power supply, i offer a repair service for this power supply board, prices start at £45.00 + postage so no need to buy a new board as any used 2nd hand board will go the same way over time, all my work is guaranteed and i am a fully qualified tv engineer with over 15 years manufactures training, for more details have a look on my website or email me.



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