OK I changed the fuse at the power supply and the new one blew also. I am going to have to have it looked at by a pro, I know this, but I was wondering if anyone knew what it could be and about how much it would cost to get the job done, I would like to at least have an idea so I am not getting messed over when someone comes to look at it.
ps. There was no lightning and the wall plug-in works fine
Thanks for the help before on the previous question.
tv turned off. friend said it sounded like crinkling aluminum foil found blown fuse on power supply, replaced fuse as soon as i plugged tv into wall outlet it blew again, was also told right b4 it went off tv looked like a 3,d picture all the colors were seperated. plz help low budget, expierenced it electrical but not electronics.
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Most likely a power spike occurred and if you are lucky it blew a fuse inside of the TV. You will have to dismantle the back of the unit and look for the fuse on the circuit board. It will be most likely a ACG type fuse. You can get replacements at your nearest Radio Shack.
hello the glass fuse inside the tv might blew make sure the tv unpluged take the back in the power supply you should see a glass fuse if the fuse is black then it's blew if you put another 1 in and it blows again then you have a dead short somewhere
Please plug TV in another power source and turn it ON, if still does not turn ON, unplug AC wire of TV, take off back cover and follow AC cord f TV that will take you in power supply board, find fuse nearby and check is it blew off? if yes, replace it with same ratings written on it. Plug TV in AC wall socket and turn ON, if fuse blow again that means power supply section in TV got problem and need qualified tech to find out and replace components or power board. Thanks.
Sounds like something else in the power supply. The surge inrush current could have blown the bridge rectifier. (device which changes AC to a pulsating DC for the power supply). You may need to have the power supply serviced or replaced.
Good Morning Chris,
OK, first of all lets unplug the TV and wait 15 minutes for the High Voltage to discharge.
Remove the back and follow the power cord to the power supply. Somewhere around there you should find a fuse. (there may be more than one) get a bright light to look inside and try to find as many fuses as you can. Remove each fuse one at a time and check them with an ohm meter.
If you don't get a good solid reading on any of them replace the fuse or fuses with the exact same rating. Even if you get a reading and the display is jumping around and will not stablize, replace the fuse. Usually a good fuse taken out of the circuit will display a good steady reading on the meter.
I hope this solves your problem.
Have a great day!
If this is a ITC222 chassis then you need to check the fuses that are near the flyback. I would also unsolder all the pins on the flyback and re-solder them as the factory lead free solder tends to crack and cause issues with the convergence. Re-solder it with common 60/40 solder you can pick up from Radio Shack or other places.
if the fuse blows after replacing then there is a short cicuit inside the set. most likely a diode has shorted in the power supply. check the bridge rectifiers for short and any transistor in the power supply.
Let me give an idea ...after the fuse you have the bridge rectifiers and it can be all in one package or 4 individual diodes after that you have a big filter capacitor and then a power transistor called the switch mode regulator,this are major parts that can make the fuse blow up right away as soon as you plug the set in wall but these parts work along with about 30 other minor parts.If the fuse blew up at plug in it can be one of these but if it blew at turn on from the power botton it can go farther down the power supply,is hard to tell how much is damage and how much it will cost.Get an estimate and then decide.Good luck