Sharp Televison & Video - Popular Questions, Answers, Tips & Manuals

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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Turn off for 30 sec, pull the cord then turn it back on. Check the transistor or power supply. Do not attempt to fix if not certified, you might cause it to get damaged further. Take it to the customer service instead. If you really wanna troubleshoot, call a repairman instead.

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1. Open fuse
2. Power supply failure

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Those 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 section 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 procedure, to many popular brand TVs and other devices.
Blinking codes details of many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.
View the site by desktop or webview on mobile devices to see the "search box". Type in the brand name of your set in search box; to get gathered the related posts.
Just note; some models of Sharp televisions uses Philips circuit board.
Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.

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Possibly the following outfit might have the info and/or part. You can try calling and supplying model and make;

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Unfortunately we see this here all the time. Either the new mainboard is faulty or the old mainboard was fine and the problem was another board. The only way to diagnose is to have the test equipment and the knowledge.

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Disconnect from power for 5 minutes, plug in, press and hold the On button on the television.

If that doesn't work, you need a technician.

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Possibly stucked volume button on tv

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