Sony XBR-65X900E 4 Blink Code

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

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[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

I looked at a similar board over and I see several places that are labeled fuses but I'll be damned if I can tell where they are, I know some will have a label but just not be included in a particular design.

[my2k2zx2]

Re: Sony XBR-65X900E 4 Blink Code

I think I'll try a new main board and see if that gets this working again. Not sure what issues it might have at this point.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

ok, if you are sure you are getting a new mainboard, something you can try if that there is a cap and not a fuse, is just remove it with a soldering iron and try the tv, I have seen this work, that is removing a shorted cap and tv working with it removed.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

if you find a place with decent prices send me a message, still need one for my 900c.

[my2k2zx2]

Re: Sony XBR-65X900E 4 Blink Code

Going to see if I can find one in a known working condition on ebay.

[lotas]

Re: Sony XBR-65X900E 4 Blink Code

The fuses are in the photo, the motherboard has nothing to do with error 4 associated with the LCD Panel ...

[my2k2zx2]

Re: Sony XBR-65X900E 4 Blink Code

The circled fuses are not blown.

So the above chart is showing 4 red flashes means the panel itself is the issue?

[lotas]

Re: Sony XBR-65X900E 4 Blink Code

This is everything related to the panel, backlight (leds), led driver, power led driver...
There is a problem with the panel or with the T-con, then the error would be "5".

[Storyteller12]

Re: Sony XBR-65X900E 4 Blink Code

I think it’s backlight related. Unplug the blue tabbed cable from the main board and plug the tv in. It will do a backlight test and if it the leds are good the leds will stay lit

[Storyteller12]

Re: Sony XBR-65X900E 4 Blink Code

Note you might have to unplug the lvds cables going to the tcon also.

I'm not sure as I already had the screen out and those cables unhooked when I discovered the led test cycle.

[my2k2zx2]

Re: Sony XBR-65X900E 4 Blink Code

It's going through a color pattern, checkerboard pattern. No signs of it turning off. It's playing ambient music as well.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

The fuses are in the photo, the motherboard has nothing to do with error 4 associated with the LCD Panel ...

I had 4 blinks plus many shorted caps on mainboard, have not decided on replacing mainboard but I think thats the issue.

[lotas]

Re: Sony XBR-65X900E 4 Blink Code

I had 4 blinks plus many shorted caps on mainboard.

It could not be a short circuit, but a very low resistance on this bus (processor core power), just like on this 4 ohm board.

[lotas]

Re: Sony XBR-65X900E 4 Blink Code

It's going through a color pattern, checkerboard pattern. No signs of it turning off. It's playing ambient music as well.

Well, you wanted to order a motherboard (and that would be the same mistake).

[my2k2zx2]

Re: Sony XBR-65X900E 4 Blink Code

I found a set of all boards from a supposed cracked tv.
Might get that and change out all the boards.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

Well whats the answer then, storyteller just said if the backlights stay on they are ok and they stayed on.

[lotas]

Re: Sony XBR-65X900E 4 Blink Code

Well whats the answer then, storyteller just said if the backlights stay on they are ok and they stayed on.

The answer is this - the protection of the led backlight is turned off and the processor thinks that everything is in order with the backlight.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

ok, just to satisfy curiosity can you test that cap on the new mainboard when you get it, to see if it reads the same.

[nomoresonys]

Re: Sony XBR-65X900E 4 Blink Code

The answer is this - the protection of the led backlight is turned off and the processor thinks that everything is in order with the backlight.

ok, I get it, thanks for explaining, so it could still be a backlight issue.