Sony KDL-46X4500 - 6 LED Blink Code

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Backlights do not come on during this time, have never seen any backlights, no sound or image, only the SONY logo and a few icons on the front lower panel.

[CapLeaker]

Re: Sony KDL-46X4500 - 6 LED Blink Code

What do you get on the BLon pin when it is unhooked from the PSU? Ever shined a good flashlight into the screen to see if there is any life on the LCD?

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

I have disconnected the lower connector that I presume operates the backlights? The top connector that I also presume is for the backlights, is still connected. The TV now stays on with green LED showing and doe's not enter blink mode. I'm now able to turn the TV on or off using both the remote and the TV switch but there is still no picture or sound?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Can I see the pictures of the whole back side of the unit that will show how all the boards are connected together?
My mistake to think that this model uses CCFL, it uses LED backlights so it does not have HV Inverter circuits.

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Disconnected lower wiring connector which I presume operates the backlights?
The top wiring connector, just above the heat sink is still connected.

The TV will now stay on with green LED light showing and the center SONY logo on the front panel remains lit. The TV is able to turn on/off either by using the remote or TV switch, it doe's not enter blink mode but still no picture or sound?

Not sure if I should now remove the 1K resistor and then try again?

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Seems as if I've just repeated myself, I will do some more measurements.

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

3.38V on the BLon pin both when TV on and standby, bearing in mind I still have the 1k resistor connected so I'm probing the empty cavity from where I removed the wire. I have done the flash light on the screen but unable to see a image?

I was thinking the same thing about the CCFLs so was trying to find some kind of inverter board?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

It uses LEDs for backlights with that big LED driver board on the left side, I have never seen LED driver board that big before, so basically you have disconnected the LED backlights from the driver board and the 6-BLINK code went away.
I need to do some research about this model. I will download the service manual to see what kind of info it has for this TV:

Can you read the P/N of that LED driver board?

[CapLeaker]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Sounds like you have to tear the panel down. Bad LEDs?

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

P/N for the LED driver is: 1-877-581-11.
A1553199A.

I've only disconnected the lower connector that enters into the rear panel which I presume goes to the LEDs?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

OK, I found the picture of the board at shopjimmy (you may not be able to get the website in UK.
http://www.shopjimmy.com/sony-a-1553-199-a-gl-board.htm

Picture provided by shopjimmy.

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Correct board but as you said, we are for some reason unable to get the website for shopjimmy here in the UK?

So do I take a chance and tear down the panel or go for a new board?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Looking at the service manual for the 46'', this TV uses RED, BLUE, and GREEN LEDs for Lights source, not the typical WHITE LEDs.
This is not going to be easy troubleshooting.
I will not do the panel tear down yet.
Thed LED board may look something like this.
http://www.sony.co.nz/article/358578...ct/kdl-46x4500

RGB Dynamic LED
BRAVIA X Series can display the widest range of colours through the use of RGB LED backlighting which has a unique arrangement of red, blue and green LEDs.

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Thanks for the information and schematics.

Starting to get a bit complicated now, especially looking at the schematics. Having looked at the LED Error Codes for 6 flashes it seems as if we are going in the right direction i.e. Backlight - (LED) GL Board Error?

So am I to concentrate on troubleshooting the GL Board first? I had previously removed this board, checked a few caps, resistors, fuses etc. maybe I should have another look at it tomorrow?

Having said that, why do I not have a picture or sound as I'm unable to see why the backlights would have an effect?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

The GL board at shopjimmy is only $27 but he does not sell boards to EURO any more due to too much fraud.
It will be worth swapping out the board if you can get it that cheap in UK.
Yes, it is very complicate, but one thing you can at least check is the Boosted PFC Voltage feeding the board, you can also test the fuses, resistors as I marked in the is PDF for the GL board.
Please note that the GL board in the service manual is not exactly the same as yours but may be good enough to use as a guide.

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Thanks again, I will check the GL board again this evening.

Any idea which state shopjimmy are located?

[snme]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Thanks again, I will check the GL board again this evening.

Any idea which state shopjimmy are located?

Sounds like you might want to petition for a special concession!
Have you looked elsewhere?
My experience is that postage from USA to other places in the world is prohibitively expensive compared to some other places. sorry to say, but real.
Have you been able to isolate whether each of the R B G drive lines lift sensibly, and whether perhaps one of those triggers over voltage error?

[AlbertRoss]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Can't find any GL boards on E-Bay, there are a few in the States but shipping costs too high. Found one in Holland, total cost 64.51 euros which is about 50.00 pounds or $70.00.

How do you check to see if the R G B drives lift sensibly?

[budm]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Did you check those fuses and resistors I have marked up in the last PDF? and the PFC Voltage?

[vinceroger69]

Re: Sony KDL-46X4500 - 6 LED Blink Code

Shopjimmy may still send too the uk i asked the other day on a board i needed for someone maybe send this person a email.
Austin@shopjimmy.com