Kdl-40v3000 1 red blink then back to green

[mattstolte]

Ok so i got this tv and when i press power the green light comes on but no picture, then after about 30 seconds it will flash 1 red blink the go back to solid green but still nothing, any ideas?

[tom66]

Re: Kdl-40v3000 1 red blink then back to green

Solid green sounds like it is turning on normally.

No backlight? Any sound?

Pictures of the TV boards?

Have you checked if your PSU is outputting OK voltages? Most SONYs have outputs labelled.

Check for 24V & BL ON at inverter...

[mattstolte]

Re: Kdl-40v3000 1 red blink then back to green



i checked the vcc on inverter says 12v on meter. So think inverter is bad?

[tom66]

Re: Kdl-40v3000 1 red blink then back to green

This uses a high voltage inverter - you cannot check it with a meter. Did you check BL ON and BL ERR (if present?)

[mattstolte]

Re: Kdl-40v3000 1 red blink then back to green

[=tom66;451126]This uses a high voltage inverter - you cannot check it with a meter. Did you check BL ON and BL ERR (if present?)[/QUOTE]

i cant seem to find them tom, they would be located on power supply correct?

[tom66]

Re: Kdl-40v3000 1 red blink then back to green

Yes but they could be variously labelled ON/OFF, BLON, INV_ON, etc. For now just locate backlight on signal.

[mattstolte]

Re: Kdl-40v3000 1 red blink then back to green

i have balancer, inverter err, nothing that says on, also on my main board i have a little orange light that is blinking non stop then it will stay on then blink, it makes weird non pattern blinks

[mattstolte]

Re: Kdl-40v3000 1 red blink then back to green

i mean if it was inverter i should be able to flash light to see menu or something, i see nothing

[tom66]

Re: Kdl-40v3000 1 red blink then back to green

Not applicable to all panels, especially these newer ones with a strong anti-reflective coating on the panel. (Reflects panel light easily.)

[dboy]

Re: Kdl-40v3000 1 red blink then back to green

Hi,
we have the same tv model, I attached the service manual for your reference.

[mattstolte]

Re: Kdl-40v3000 1 red blink then back to green

dboy thank you, I have never looked at a service manual before, is there a page I can locate the circuit boards and there voltages? so I can test all pins?

[dboy]

Re: Kdl-40v3000 1 red blink then back to green

you can find the schematic in the service manual except for the tcon. I am not an expert in troubleshooting LCD TV, I am also asking help here, My tv (same model) is also for repair and experts of this site is helping me.

[budm]

Re: Kdl-40v3000 1 red blink then back to green

This is the training manual, you may want to read it first.