Sony KD-65XE8596 no standby light

[brithepi2k]

Hi,

I’ve got a Sony KD-65XE8596 here that has no standby light coming on. I’ve tested the power board with the test meter, the TV needs 3.4 for the standby but only getting 2.4. Anything that I can change/check on the board to get it working? Pictures of the board are included.

cheers

[tiki66]

Do you get any voltages on main board?

[Davi.p]

2,4v also without loads? i.e. main board detached

[brithepi2k]

Do you get any voltages on main board?

Pin 2 main board : 2.63v

Pin 7 main board : 12.83v

Pin 10 main board: 12.84v

Pin 11 main board: 2.58v

[brithepi2k]

2,4v also without loads? i.e. main board detached

With Main board detached, I only get 0.03v on the same pin

[lotas]

With Main board detached, I only get 0.03v on the same pin

Are you at least measuring the voltage on certain pins correctly?

[Davi.p]

this is not possible due to the post #4 , check well the connector, it has usually 2 rows of pins...

[brithepi2k]

Are you at least measuring the voltage on certain pins correctly?

Getting nothing from any of the pins with the main board in or when it’s not plugged in

[brithepi2k]

See here.

[brithepi2k]

this is not possible due to the post #4 , check well the connector, it has usually 2 rows of pins...

I’m now getting nothing

[lotas]

See here.

5 Pin (stb 3.3v) is in the bottom row, third from the left, a thick probe may not reach the contact, insert a medical needle into the connector and measure the voltage on the needle relative to the ground.

[lotas]

I’m now getting nothing

I hope you disconnected the cable and connected it to the motherboard with the power supply disconnected from the network.

[brithepi2k]

I hope you disconnected the cable and connected it to the motherboard with the power supply disconnected from the network.

I left the cable connected.

[Davi.p]

To reach inner of connector use a new through hole resistor..

[lotas]

I left the cable connected.

Well, if the power supply is not de-energized, was under power and your manipulations with the disconnection and connection cable, then even more malfunctions were added.

[brithepi2k]

Well, if the power supply is not de-energized, was under power and your manipulations with the disconnection and connection cable, then even more malfunctions were added.

So if I buy a new power board would that work?

[lotas]

So if I buy a new power board would that work?

Well, if you can’t repair the power supply, then yes, you’ll have to buy a working power supply.

[Davi.p]

The answer is NO, if you tested voltages before messing with connectors and now you have no more voltages then the new power board will not solve as the original fault was not the power board.. but check better with a resistor wire if you have..

[lotas]

If the STB power supply (3.3V) was reduced to 2.4V (if this power supply was measured correctly and on the corresponding output (5 pin)), then the problem was initially in the power supply, and not in the motherboard.

[sigmeyer]

Its common knowledge to disconnect power before you try disconnecting the cable of main board , but that shouldnt have damaged it , if you are getting nothing now , maybe go and inspect the solder contacts on the power board , because when you removed the connector you might have flexed the board exposing the issue further... try to inspect the whole board for cracked solders and reflow accordingly... Also clean the dust off the high voltage side , its not helping anything...