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A series of 40 inch LCD HDTVs by Sony.

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No red light - no power at all.

Suddenly our TV won't turn on. The red light that is normally on when the TV is off is also not on.

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Rebecca Chock what is the exact model number of your TV? what have you checked? Have you tried a different power outlet?

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My TV model number is KD-75XE94xx have checked my power socket with other device and it works fine but my Sony TV ain't showing any red light power indication at all when plugged

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I have the same problem. My model code is UA40H5500AKXXA no power and no red light

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I have same problem tv model is

PS59D550C1M

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@meljay what problem do you have with your TV? what have you tried to fix it?

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  1. Check the power socket and the power cord. Connect a known working appliance to the socket to check if the socket is indeed live. If your TV has a detachable power cord, make sure plugs at both ends are fully seated.
  2. If you're positively sure that the socket is live and the power cord is OK, unplug the power cord and leave it unplugged for half an hour before plugging it back in. Certain recent TVs are fitted with self-resetting fuses, and unplugging the power cord will allow a tripped fuse to reset.
  3. If you're still not getting the red Standby light, the circuit that powers your TV is defective. Such defects are often banal and easily repaired, but this should be done by a qualified technician because the power supply circuitry is safety critical and faulty repairs may constitute a fire or electrocution hazard.

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the stanby light shows on my tv but doesnt work, i try to turn on and nothing happens ...

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You are a lifesaver- thank you!!! :D

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The red light shows on the TV but the TV is not powering on

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Does your TV have a power switch? Most TVs do, but sometimes - as with the Sony Bravias - it isn't easy to find. It can easily be switched off accidentally.

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Power within TVs in general has 2 forms (for lack of a better way to describe it).

1) Standby power - This is usually 5V and is there to respond to a remote. The presence of this is known by a red light that is seen from the front of the TV. If this is not present, a remote won't work and most likely the TV won't turn on at all. (This is what is being reported here.)

2) Running power - This is what is used once the set turns on. This is triggered either by pressing the power button on the TV or on the remote. In both cases, the internal "computer" is told to turn on the TV. Problems with this power supply usually result in the set clicking on and then off, no picture but sound etc.

Since the reported problem here is no red light at all, I would be looking for a more obvious problem with the power supply board. For example: a blown fuse, a defective rectifier diode in the standby circuit etc.

Further investigation is required to determine the exact problem. If you are not comfortable working on electronic devices, seek a professional service shop for help.

Dan

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I had power surges and my TV was working fine. I turned it off and now it will not turn back on.

KD-55X750F

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pamela, read previous posts and solutions if same model. if different model, try but start your own thread with details, pictures, model number and what you have tried already. thx. (heads up, for assitance in troubleshooting you will require a multimeter and have the capability of accesing the boards withing the set.)

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1 have a kdl55w800c . it will not power on . took back off of tv unplugged cable between power board and main board and back lights come on . changed main board same results changed power board same results . need help

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@lokicat1 did you resolve this problem eventually?

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Rebecca Chock さん、ありがとうございました!
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