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When switching on my lcd flat screen there is an electrical buzzing sparking noise coming from the monitor and it wont switch on any more

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Please bring it to a repair shop sooner rather than later. They will let you know if it can be repaired. But have a look at the price of a new one. Sometimes it is the better option!

Posted on Aug 29, 2008

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Tv making loud buzzing noise


A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.

If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.

Jerry G.

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The TV wont come on at all, the power source is good The model # is DP19648 Sanyo Is there a reset button on TV?


d cooper, Because your unit is small screen type, You should visit YOUTUBE and view video clips of cold cathode fluorescent lamp back-lit lcd computer monitors being repaired. Your unit is subject to the same type of internal "switch-mode-power-supply/CCFL inverter ballast" circuit problems as are lcd monitors. Search terms at youtube are: "lcd monitor disassembly" and "lcd monitor repair" Then look for and view lcd tv repair video clips. Inspect your unit for "bad" (failed) electrolytic filter capacitors on the AC to DC switch mode multiple output power supply board. May have "open" fuse inside near or on the smps board. If "open fuse" the next question is why??? 12fixlouie

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Dear Sir, I am facing problem with my Samsung LCD monitor, when I switched on my Computer it shows the bootup screen, after booting the LCD screen goes blank, when i turned off the monitor and again turned...


yes turn on the computer and keep pressing F2 contineulsy immediatly after display observed then menu will be come then highlight on last good known configuation and press enter problem will be solved

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1 Answer

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usually you can see the tops of one or more capacitors bulged up when the power supply board has failed. VERY common on Samsungs.

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The monitor just stopped coming on


If you cannot see a power indicator light when you click the switch on... odds are you have a power supply problem.

If you click the switch on.. the indicator light come on and the screen will not light up - you have a blown fly-back coil.

The resolution ( if you are not technically inclined ) is to purchase a new monitor. The economics of monitors, especially ones that are not flat screens, says it is cheaper to replace them.

If this monitor is an LCD flat screen... you have a blown power supply and the resolution above applies.

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cheak back light settings turn it all way up if down to low it will buzz in video options

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what model of Sony is it? On many of the Sony projectors, a 3 flash error code indicates the lamp is not properly seated/installed or the lamp door is not closed properly

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mcdevito75 here LCD, or liquid Crystal display, chances are the crackling is the inside liquid display trying to capture the in comming electricity to make a display picture. Remember even an LCD is nothing more than a light bulb, a very intricate light bulb but a light bulb, and you have light bulbs burn out when you put them on and almost never as the are on burning. Turning the monitor itself off won"t really save electricity or the monitor itself as, when you shut down the computer from Start (left side of screen) the monitors screen saver comes on for 10--20 minutes then goes off, at this point the electricity is at the monitors on/off switch and not going thru the monitor at all. If you turn the monitor off at it"s on/off switch, the sudden jump of electricity to the monitor from it"s on/off switch could hurt it, or even the switch. I have a friend who turns off the monitor also and that friend had a bad monitor in 3 years. I never turn my monitor off just the computer itself. I'd speak with a Radio Shack, Staples, Best Buy ETC. for more advise. Me I;d say leave the monitor on. Hope this helps.

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