Question about Sharp LC46SB54U 46 in. LCD TV

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The Sharp LCD TV LC37sb24u cannot be turned on. The on light flicks green then immediately goes off. Happened suddenly after trouble free use for months.

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It is most likely an issue with your power supply board. This TV has been known to have Dry Solder points on the board that like to suddenly go broke. If you have any knowledge of basic electronics and soldering, you can attempt to repair this yourself. The board is where the power plug receptacle is, and you will have to take off the back of the TV. Look for the main leads and see if there is a gap present. If so, resolder the connection(s) and try to power on. Worst case, the board is shot, and you will have to find a replacement if not under warranty.

I had to do this to mine.....didnt have to buy the board. When I was pricing them, they were around $100-150.

Hope this helps!

Posted on Jun 23, 2009

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Posted on Jan 02, 2017

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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
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Did you check the service manual troubleshooting guide yet. You can try disconnecting the power to the inverter board and see if it will stay on and have sound.
Service manuals:
http://elektrotanya.com/?q=showresult&what=Sharp%20LC37SB24U&kategoria=&kat2=all

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

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Best regards and Semper Fi

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The sharp tv have a very common problems,couple years the Main Tuner signal board have problems or dead.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish Main Tuner signal board for the replacement.

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http://www.partstore.com/GetModel.aspx?MfgName=Royal+Philips+Electronics&BrandName=Philips&ModelNumber=37PF7320A37&page=16

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notallbad1@yahoo.co.uk

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