Question about Toshiba TW40X81 40" Rear Projection Television
I bought this TV brand new in 2000. It worked with no problem for eight years until a few weeks ago. Now when you press the Power Switch (button) to turn on the set, all you hear is a thumping sound (like a heart beat) through the speaker, and no picture comes on. At first, I thought it was the circuit board connected to the power switch that was broken. So I ordered a new circuit board. I connected it, and it did not solve the problem. The thumping noise still occurs, and still no picture. Please help! What could the problem be?
This may be a "ISL9860" chip on your T-con board - I saw a nice youtube video by norcal715 you can do a web search for "norcal715 samsung" & a few from him will pop up. The one I watched was at https://www.youtube.com/watch?v=l2jzLn5QEos
You might contact him through his youtube video.
Posted on May 02, 2017
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Posted on Jan 02, 2017
SOURCE: Toshiba tz50v51 popping sound
Possible problems: * The TV set may be unplugged. * A fuse or circuit breaker may be blown or switched off. * The remote control unit (RCU) may be disabled. Solutions: * Make sure the TV/VCR are plugged in and the wall switch is on. * Check the fuse or circuit breaker. Test the outlet with a lamp. * Replace the RCU's batteries: if this fails exchange the unit.
Posted on Jan 19, 2006
SOURCE: No sound or picture
Keith, Check fuses Then Resoder The COMPLETE board I bet there is heat related problem W/Old Soder Just a Hunch!!!!!!!! G'Luck Chance One 559 @ Yahoo . Com
Posted on Feb 25, 2007
it could be, that would be the first thing i would do to rule out I would first check for loose connections on the board.
Posted on Dec 06, 2007
If the relay clicks you most likely have a leaky diode or bad transistor in the stand by or start up circuit. There is a manual available for that model called. Toshiba Power Supply and Shutdown circuit Troubleshooter. Its available at the following link. It gives step by step instructions so you can figure out exactly whats wrong with your set. The site emails it too you after you place your order and they also provide free unlimited tech support so you will have a resource for help if you need it. I am one of their on line support techs. I highly reccomend that Manual to any one with a toshiba that will not power up. Here is the link.
Posted on Apr 12, 2008
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