kdl70w830b main board 3 blinks

[Brucetafer]

Re: kdl70w830b main board 3 blinks

Each one of those LED driver IC is 4-CH LED driver (4 string of LED per IC).
AN37011B spec sheet on how it works.
I only see LED 1 ~ 16 on the LED connectors CN1002 ~ 1004 so it may only has 16 strings..
I cannot verify until I can do more research on this TV model.
The Cathode return pin Voltage of the bad LED will not be the same as the good LED string if all the LED strings have the same quantity of LED's.
BTW, where does it indicate 125V max?

on the driver board lower left hand side. not on the chip.

[budm]

Re: kdl70w830b main board 3 blinks

F6.3A/125V: That is the fuse Voltage rating, not the Voltage feeding the board. Fuse Voltage rating is typically chosen to be about twice the Voltage requirement of the device.

[Brucetafer]

Re: kdl70w830b main board 3 blinks

Ok Ive pulled the panel, verified ALL leds are perfect, the the diffuser was kinda weird, so it may have shifted when hung up or moved.. Ill post up if anything changes..