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Re: TV TROUBLE SHOOTING PROBLEM
Have you tried another outlet in the house? If it still blows a fuse there could be an internal issue in the TV regarding grounding. Can you temporarily connect a microwave oven or similar device to that outlet to see if the fuse still blows? If it continues to blow, you can at least rule out the TV being the cause. Is the TV new? Has any recent electrical upgrades been done? Are you using an extension cord or plugging the TV's power cable into the Cable/Satellite box instead?
One important step to do regardless for all sensitive electronics is to perform a power drain by unplugging the device or removing batteries followed by holding in the products power button for 1 minute. This flushes out the capacitors and circuit board of any electricity that can prevent normal functionality.
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if you want to do it with your own, you will need a proper trouble shooting. which need the right device and tools to do the job and make sure you have at least a basic knowledge in electronic repair. the first place to be check will be the power supply section, you need to have voltage checking weather their is a secondary dc voltage from the power supply section going to the horizontal section. to turn on the other circuit and the flyback transformer. you have to know if their is a 135dc voltage at the power supply section,check at the primary capacitor using a digital tester.
what you can do is trouble shooting of the tv unit. first place to be check will be the powers supply section check weather the primary fuse get blown. if ok check the regulator and the bridge type diode which shorted. if all good, next will be the horizontal output transistor or an open resistance going to the b+ of the flyback transformer.
if no any power indicator at the front panel what you can do is to remove the back cover of the tv then look for a blown fuse at the power supply section. if ok, at this time a trouble shooting must be applied if you want to do it with your own just let me know and i can give you further solution good day.
if no any power indicator that light or even blinking, the first place to be check will be the power supply section you must check weather the fuse is blown.if the fuse is blown before you replaced with new one you need to check other component in the power supply section like transistor and diode. so this case need proper trouble shooting, if you think you don't have enough idea in any electronic repair just leave it to the trained tv technician.
if no any light indicator at the front panel of the tv, the cause is either failed in the primary power supply section or their is a shorted line at the horizontal section. you must need a trouble shooting which you need a proper device and tools.
The trouble of your tv is the power supply. Try to open the back cover of your tv and try to check the fuse if busted. But be sure to unplug your tv first before engaging in trouble shooting. In order to find the main power supply, try to follow the ac cord it will direct you to the power supply then try to look for the fuse, if you see the fuse try to observe if the fuse wire is only broken try to replace it with the same rating, if the fuse is totally burned out do not just replace it, it has a shorted parts commonly the regulator and the bridge type rectifier.
Your Tv Horizontal deflection doesn't work, try to switch ON your TV by remote control or by pressing the program up or down button in the TV set. If still working check the B+ in the capacitor rated 200Vdc. monitor the voltage as you press the program button, it must have a 90vdc , or remove first the Horizontal Output Transistor before you switch on the Tv. Then monitor the Voltage in B+. If it is present your Power supply is good, if not then check the component in Power supply section. if the B+ is present check the horizontal area.
All you have to do is to check if the unit is properly plug to ac outlet,and there is a presence of AC,to check you must plug other appliance to confirm,check if there is no cut wire on the ac cord of your tv,the unit was turned on?,if everything is okay,you must call a repairman.You must state your knowledge in repairs so that I can make solutions like troubleshooting.
Tips for possible problem, try to listen the "chechk" sound when you plug the unit, a sign of power supply start up,that means the power supply is working,if that sound repeat at 2 times /sec. the power supply is overloaded,if no sound at all, the power supply is in trouble.