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Power supply button not getting on - Toshiba 32D46 32" TV

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Hello talwar,
Hi, the easy level would be to check for the following parts 1. fuse, if open, replace 2. faulty switch, check for continuity using a multi-tester device. 3. check open wire/power cable
if this cannot solve the problem.
this would be the hard part 1. If the fuse replaced, exploded again, check for shorted parts like regulators, diodes, capacitors. 2.the fuse is good but still no power, this is power supply failure, needs service. (there is too much explanation and testing involve)
call your local service shop for a job. thats it.

Posted on Apr 30, 2010

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The power light keeps flashing orange


I had my Optiplex GX520 at work shut down abruptly every time I turned it on it in the morning. This would always happen within the first 30 minutes. I would then get the flashing amber light. After starting the PC again, it would stay on all day (over 8 hours) without shutting down again. I found that the power supply was over-heating.

Two things need to be done. First, in order to get the amber light to stop flashing, un-plug the computer from the wall for 30 seconds then plug it back in. OR hold down the power button for 10 seconds or so. The light should stop flashing. Then press the power button again and the PC should start.

But why did it abruptly shut down in the first place? The power supply has a fan-speed-control circuit in it to keep it running slow and quiet when the power supply is cool. It gives the power supply lower voltage when the power supply is cold and higher voltage as the power supply gets warmer. This circuit either is not working correctly or the fan getting sticky over the years and needing more voltage to get it moving when it is cold. I found that the fan was not starting at all and causing the power supply to over-heat.


To keep the fan moving at full speed, I cut the wire to it and wired it to the +12v output directly. Not the fan goes at full speed all the time. And yes, it is nosier. But at work it doesn’t matter.

The best solution would be to just get another power supply from Dell if possible. Or buy a +12v, 70mm fan from Digi-Key and replace the original.

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1 Answer

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to check case switch and board switch

1.) plug in power supply to main board
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if the board should start up>
then its your power button on the case that is bad, you can try to repair it, chage it or buy a new case,

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