Question about Mitsubishi WD-52725 52". Rear Projection HDTV

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My Mitsubishi Rear Projection TV does not switch on

My Mitsubishi Rear Projection TV (model WS65807) does not switch. It is about 7years old and sparingly used. I opened the rear panel and cheked out the fuse. I also confirmed that 110 V is coming in to the tV to the fuse, with a mutlimeter

I do not see any resettable button in the front panel. No light comes on when the unit is plugged in. Just a small arching as the plug is inserted into the outlet and a faint hiss similar to connecting any light electrical equipment. Hiss stops right away.

TV does not respond to the power button on the front panel or the remote (no sound or screen lighting up).

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I think it may be only due to the damage of some components inside the TV.as you have seen that the 110v is coming in, there is no problem with the current supply and nothing to do with that.next step is to check whether the each and every component gets the correct voltage to wake up or every board inside is working fair.if you are not expert in this work,the better way is to go for a technician and seek for his help also.thank you

Posted on Dec 28, 2008

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  • Master
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Hi and welcome to FixYa,

Initially, pls check the presence of standby +5VDC from the power supply board. This +5 is responsible for the logic control and general management of the operations of the TV. It wakes up the TV. It is also used for the built-in diagnostics and the auto-protection system.

This of course would require opening the unit, perform voltage measurements,determine faulty component and subsequent part(s) replacement. Further, a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron would be required. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings.Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Good luck and Thank you for using FixYa.

Posted on Dec 28, 2008

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