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When plugged in to AC power, our 19" screen tv has no power but makes a chirpping sound

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Bad horizontal output transistors or bad flyback transformer. Something that would have to be tested by a qualified service technician. Taking apart tv's is very dangerous!

Posted on Aug 17, 2008

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Posted on Jan 02, 2017

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Hi we have a 720 Magnavox flat screen tv that is about 5 years old. When i went to turn it on the other day the picture started flasing and making a chirp noise.. and won't fully


power supply problems does it have a separete power supply if so you can try to change or if you have someone with the same you can ask to try it.if its internal power supply it needs to be fixed.

Aug 20, 2012 | Magnavox 37MF437B37 37 in TV

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How to Troubleshoot CF-19 The Panasonic Toughbook CF-19, commonly known as...


How to Troubleshoot CF-19<br /><span style="font-style: italic;">The Panasonic Toughbook CF-19, commonly known as simply the Toughbook 19, is a laptop computer geared towards people who work on location, such as field workers or military personnel, who require a sturdy and resilient device. Unique features of the model include its screen which can display clearly in bright sunlight, its touchscreen function and its backlit keyboard. If you experience errors or malfunctions with the CF-19, troubleshoot it to diagnose and solve the problem before replacing the device or seeking professional repair.</span><br style="font-style: italic;" /><br /><span>Instructions</span><br /><br /><span>Device Turning On</span><br /> <ol> <li> <span style="font-style: italic;">Check that the AC adapter is connected properly. One end should be plugged into the laptop and the other end should be plugged into a working AC outlet. If the adapter is disconnected at either end, connect it.</span></li> <li style="font-style: italic;"> Disconnect any device connected to the laptop's USB port or ExpressCard slot. A malfunctioning device may cause the laptop to malfunction and not turn on.</li> <li style="font-style: italic;"> Press the "Fn" and "F8" at the same time to turn off "Concealed Mode." This mode disables the power functions of the device.</li></ol><span>"Remove disks or other media. Press any key to restart" Error Message</span><br /> <ol> <li><span style="font-style: italic;"> Remove the floppy disk or CD-ROM from the device and press any key. This message indicates that the disk does not contain system startup information and cannot run on the device.</span></li> <li><span style="font-style: italic;">Disconnect any device connected to the laptop's USB port or ExpressCard slot as problems with these device's may also cause this message to appear.</span></li> <li><span style="font-style: italic;"> Contact Panasonic Technical Support if this problem persists after attempting Steps 1 and 2 as this may be a sign of a problem with the laptop's hard disk and it may need repairing or replacing.</span></li></ol><span> No Display/Screen is Blank</span><br /> <ol> <li style="font-style: italic;"> Press the "Fn" and "F3" keys simultaneously to switch to "Internal Display" mode as the device may have been set on "External Display."</li> <li style="font-style: italic;">Check if the device is in "Power-Saving" or "Sleep" mode by pressing any key on the keyboard. The screen should come on if the device was simply in "Power Saving" or "Sleep" mode.</li> <li><span style="font-style: italic;"> Turn on the display screen or monitor of the connected device if you have the laptop set on "External Display" and want the display to come up on that device.</span><br /></li></ol><span style="font-style: italic;"><span>Hopefully this can help<br /><br />regards<br />multilinkent</span></span><span><span><span style="text-decoration: underline;"><span style="font-style: italic;"><span style="font-weight: bold;"><br /></span></span></span></span></span>

on Jul 08, 2011 | Computers & Internet

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My element 19 inch flx-1910 tv will not power up


did you make sure the voltage, amperage, and polarity were matched tv to plug?  The information is found on the back of your tv and the plug must match that.  If they do not match, you might have fried your tv.

Mar 11, 2009 | Proscan 19LA25Q 19 in. LCD Television

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Phillips Magnavox Proj. TV only makes cyclic chirping sound


Most common reason is shorted convergence chips. Goto the site www.TvRepairKits.com and get their "chirping set" repair kit. 

Feb 01, 2009 | Philips Magnavox 9P6034C 60" Rear...

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TV making chirping sound


If one of the secondary supplies is shorted, the power supply will "chirp" when plugged in. This is the power supply's way of protecting itself and this usually happens when the horizontal output transistor is shorted. If this set was in my shop and needed a new output transistor, a fair price would be right around $100.

Jun 28, 2007 | Toshiba 32DF46 32" TV

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When tv turned screen is blank and chirping sound comes from back


A chirping sound usually means that one of the secondary supplies has shorted, most likely the horizontal output transistor. The power supply "chirps", which is the sound it makes when it protects itself from drawing too much current. The set should be serviced by someone with experience in Philips projection TV'.

Jun 21, 2007 | Philips 43PP9202 43" Rear Projection...

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