Sony xbr-75x900f 6 red blink

[Diah]

Re: Sony xbr-75x900f 6 red blink

Not all Sony TVs will have backlighting without a connected panel (matrix).

all LCD TV brands will work and BL On with out screen... just like any mobile of course when t-con are external only

OP: let our talking only after we see the strips closely what u put in... labels are very important ... how many pins and LED unit,,, all this are important to start from zero as i wrote before

[lotas]

Re: Sony xbr-75x900f 6 red blink

Yes, almost all modern Sony models will immediately display an error “5”, and if you then connect the panel, it will go into update mode, the LEDs will flash alternately.
This is Sony, they have their own startup algorithm, self-testing is underway, even if you install someone else’s T-con, it will give an error (they are tied to hardware).
Even the Hisense H55BE7000 model, if the backlight is not working properly, it won’t even turn on!

[Storyteller12]

Re: Sony xbr-75x900f 6 red blink

If you test by removing the lvds cable i mentioned earlier with the panel out the backlights should self test as I mentioned.

The error code you get is still 6 blinks? If so it’s still a backlight problem

[Diah]

Re: Sony xbr-75x900f 6 red blink

No dear friend lotas, Sony TV firmware... they have Linux and this TV in the threat Android.
MB firmware will communicated only with T-CON... even panel broken it will remain work... so disconnecting panel it will work any time...

[Diah]

Re: Sony xbr-75x900f 6 red blink

there are many wrong OP did and confused.... its not this way to do.. even the PSU and LED power generator and LED inverter / deliver switch can be tested with out screen,,,,

this are part at manufacturing process... before they install screen in place.

[lotas]

Re: Sony xbr-75x900f 6 red blink

This is if there is no spi flash on the matrix bars.

[Diah]

Re: Sony xbr-75x900f 6 red blink

even if there are SPI,,, SPI will not test or communicate with Panel,, it will do with T-CON.. regards to Panel decoding color display... if panel not in place SPI are blind will never report error... because no way at start up there script send to panel.... the communication with T-CON Only this talking only on separated T-CON not build in MB or panel.

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

If you test by removing the lvds cable i mentioned earlier with the panel out the backlights should self test as I mentioned.

The error code you get is still 6 blinks? If so it's still a backlight problem

Yes it is.

I will take this thing apart again in a few days, I have some parts for other TVs I'm getting in soon and this TV takes up all working space when I take it apart. So we will get back to this shortly!! Thanks all.

I'm gonna have it down to the LEDs

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Okay diah, I believe you were correct. It looks like these have an order to go in. Problem is I didn't copy the order from the original ones and this doesn't make any damn sense at all. Each side has different numbers and I need to decode the order. Maybe you can help. So each one has a labeled number but some are duplicates. The only other difference is a different number on the stick so I will put right side with number and left side with numbers. Help if anyone can

Right side

1-709
1-835
2-710
2-836
3-837
4-838
6-714
7-715
8-716
8-887
9-888
9-717

Left side

1-738
2-737
3-547
4-735
6-733
6-661
7-732
7-660
8-731
8-659
9-730
9-658

The cables go from the bottom to the top. The bottom cable is 1 and it goes up to number 10 then the last two top cables (from LED driver) are 11 and 12 but they are flipped over. I do not have a picture (I didn't know this was a thing) other then the one shown from original LEDs.

How in the hell do I figure this out??? Anyone

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

This might help to help me? Trying to read myself

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Part 2, sorry it won't let me upload at once so I split

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Third

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Last

[Diah]

Re: Sony xbr-75x900f 6 red blink

you make it over here like Salad ..LOL
take A4 paper and drowing the left strips and right one too to show the lines on the strips ( Red color )
1- check if all left side are identical and right side too.
2- follow the line to check the last LED unit + an which pins at socket goes. as well the the first LED unit - an which pin goes. do the same all LED + - ( blue color )on one strip complete left and right... you will understand how the LEDs on one strip divided as groups.

also please show me the white paper reflector sheet complete to see the hols on it

[Diah]

Re: Sony xbr-75x900f 6 red blink

do you have 20LED at each strip L&R, its means to me as you have 5 LED+ so each 4 LED are one group, V round 12V in total.. not as some where i read written 12V LED LOL

take out the strips 11 12 the flipped One. and let them in connected as other ( doesn't matter how they will be even if out side the chassis ),,, then turn on the set let see what will happen

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Will do this later, the seller says order doesn't matter at all and the numbers are just random batch numbers. Will check this later!

But yes diah, 20 LED each strip. All LED are evenly spaced and all 12 rows are exactly same except for 11/12 which are flipped. Will still get you picture of reflector but it's evenly spaced 12 LED up down 20 across

[Diah]

Re: Sony xbr-75x900f 6 red blink

Will do this later, the seller says order doesn't matter at all and the numbers are just random batch numbers. Will check this later!

it make no sense for me.. 2 strips flipped - &+ , however the LED driver boards circuit are same as other 5 LED+

let see the reflector sheet the holes on it will tell us more

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Here's quick pic

[Diah]

Re: Sony xbr-75x900f 6 red blink

Here's quick pic

so 1- you have the standing leg still in chassis mounted... how it come and the sheet out ??? all of them should be out to let the sheet sitting and legs standing will tight the sheep in place
2- however the photo not good enough.. but marked the 2 hols on one strips line... one for cable sockets and other for L & R joined socket..

with hols position you will know which are the top and down... and how the strips should mounted.

[EazyBone]

Re: Sony xbr-75x900f 6 red blink

Here's more pics, the lights appear to be all the same lights. There is just left side and right side. Everything looks normal and manufacturer says they are all the same, the numbers don't mean anything apparently. The sheet only has a sticky tape around all the edges, other then that it just lays flat down and doesn't move.

And yes one for cable soc and one for l and r joined.

I have TV up on legs now so I have access to both sides at once.