My son tried to turn his tv on, it mad buzzing noises and smells like it is burning. I let it cool down and tried again - same buzzing noises and the front light is flashing like it is flicking on and off. Does this sound like it is shot (it just was 2 years old) or can it be repaired?
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replace power supply just make sure dimensions are similar or the same and the power is more or exactly the same not less. it could also be video card they run very hot these days when you open the case try to isolate where the smell coming from. good luck
That power supply is probably dead. try your motherboard witha known-to-be-good power supply to determine if your system has survived. IN my experience the failrate for antec sp450 watt psu is close to 40% over 4 years (300 pc:s at university), so there is a high probability that your psu is unrecoverable.
The switch mode power supply in the desktop computer has failed. Most likely the capacitors in the power has exploded.
You need to open the desktop computer and remove the old power supply and replace it with a new one. Take the old power supply with you to your friendly computer shop and get a replacement power supply with the same wattage or greater wattage.
I would first try cleaning the computer and removing as much dust as possible from your computer. Also clean the fans, this could be the reason why your fan is working so hard. Just make sure your computer isn't turned on and not plugged in.
The dust could cause the burning smell, if the smell has an electrical smell then most likely the capacitors are leaking in the power supply and about to blow/explode.
Is the power supply come from a desktop computer? If so all ATX switch mode power supplies have standard mounting holes and power connectors.
Take out the old switch mode power supply and take it with you to your friendly computer shop and compare it with a new one. Make sure the wattage rating of the new switch mode power supply is the same or greater than the old switch mode power supply.
To see if power supply works unplug the psu from the motherboard and drives then plug the power cord into psu and wall the fan should come on letting you know that it works.
you can also get a multimeter and check each individual connector on the 20/24 pin connector to motherboard. check the psu docs for the correct voltages to each pin
If you smelled smoke then chances are that something may have gotten toasted. remove all expansion cards and try to turn on computer if nothing happens then the motherboard may have gotten toasted. Check the motherboard and expansion cards along with memory for shorts and burn spots.
Power supply went bad (6.5v on the 5v rail) and fried my motherboard. I read where Mad Dog, Inc was terrible at returns and replacements and the BBB rated them as one of the worst. I threw up my hands and just ordered a new one from a different Mfg.