Flashing USB lbackights

[hollywood1939]

I have just purchased LED backlights for my 40" Sony Bravia TV.

When plugged into either USB port the lights flash continually. This does not happen when plugged into other TV`s or a USB wall charger.

Is this something I can change?

[LightFoot]

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@hollywood1939 wrote:

Thanks for your interest.

The LED backlight is 100cm long with 60 white LEDs.

As far as I can tell from the unclear instructions the lights

require 5v@1amp which means from your reply that  the TV

cannot supply the necessary power.

Is this peculiar to Sony as the lights work well on other TVs. (Samsung and Logik).

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Hi @hollywood1939. The rating is printed next to the USB port. My KD-55XE9305 has three ports, two are marked as 5V 500mA (2.5W) and a third 5V 900mA HDD (4.5W).

[hollywood1939]

Thanks again.

I have now managed to visibly access the two USB ports.

They each show 5v x 500mA whereas the LEDs specify 5v x 1 amp. No doubt this 

is causing the flashing problem. I am looking at a Y adaptor to connect both USB sockets to the lights.

Hopefully this will cure the problem.

[hollywood1939]

Thanks for the suggestion.

I am in the process of obtaining a Y adaptor cable so will let you know how I get on .

[hollywood1939]

I have now obtained a USB splitter and this has solved the problem.

Thanks to all who responded to my query.

[IamNic]

Hello @hollywood1939,

glad to hear I could help. 

- Nic

[brattstarr]

Did you use a usb y splitter 2.0 or 3.0

[hollywood1939]

Yes. Had to power from two USB ports to achieve constant light so Y
splitter used.