Sony XBR-65X900C Sporadic Issues

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

OK Update on this..

Yes, the firmware does seem to be identical between the 55 and the 65..

When I put the board on the 65, however, I still had to do a firmware update again.. Maybe the firmware has to be installed while in the TV it's going to be working in..

The GOOD news is that the 55" board DID work in the 65" after the firmware update...

Sorta....

Took about 40 mins to do the update, but after that, the TV booted up and I could see the boot up process work fine on the 65".. However, I had to see it by shining a bright light into the screen.. The backlights were not working..

Which makes a certain amount of sense because that cellophane connector marked in blue appears to have something to do with the backlights, as you can see by the attached picture...

Now, the GOOD new is, the stock 55" board still has the proper connections for the backlights AND the audio connections, marked in yellow on the other attached pic...

So, if I can get a good working 55" board, which is a lot cheaper than the 65" board, I can transfer the connections and, with a little bit of luck, I'll have a fully working 65" board..

At least, the theory is sound..

As things stand now, I put the 55" board back in the 55" TV.. As expected, I have to redo the firmware but, if all goes as planned, I should have a working 55" 4K Sony Android TV

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

your 65 Model with this models Applicable ,,, if your 55 and 49 listed then 100% okay same hard ware
XBR-75X940C
XBR-65X930C
XBR-75X910C
XBR-65X900C
XBR-55X900C
XBR-75X850C
XBR-65X850C
XBR-55X850C
XBR-49X830C
XBR-43X830C
XBR-65X810C
XBR-55X810C
XBR-65X800C
XBR-49X800C
XBR-75X940D
XBR-65X930D
XBR-55X930D
XBR-85X850D
XBR-75X850D
XBR-65X850D
XBR-55X850D

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

Awwww righty then...

Here goes nothing..

Another point is that the firmware for the 55" is identical to the firmware on the 65"

via the Model No of the 49 and 55 and 65 go to Sony firmware page and see if the 3 of them listed at same compatible model same at last firmware update

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Awwww righty then...

Here goes nothing..

Another point is that the firmware for the 55" is identical to the firmware on the 65"

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

the blue marked socket on the 65 don't have any cable connect on it at the set of 65. then its out of any risk. just focus on the LCD Panel type, are they both 55 49 and 65 same manufacture, if yes this is good

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

now you have the 55 working.. so what about the original main board of this 55.. it will be now good enough to you to trouble shooting it on the 55 and when it work then put it on the 65 or back to 49

The 49" has a cracked screen.. So it's not viable anyways..

The original board from the 55" suffered the same fate as the 65".. Excessive reflows...

I just don't want to risk the working 55" board if there is even a chance that putting it in the 65" would fry it...

On the other hand, it would be nice to confirm that a new main board is all that is needed for the 65"....

I guess I am asking what the risk is of the 65" frying the 55" board.. Especially in light of that "cellophane" connector marked in blue that is on the 65" but not on the 55"...

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

now you have the 55 working.. so what about the original main board of this 55.. it will be now good enough to you to trouble shooting it on the 55 and when it work then put it on the 65 or back to 49

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

The small "cellophane" connector in blue in the afore pic looks something like this...

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Well, I'll be deepped in sheet!!!

The firmware update on the 55" worked!!!!

And it is ALSO an ANDROID TV!!!

It took me about 15 mins of turning the TV on and off before the thumbdrive indicated it was working.. IE The firmware was updating..

It ran for over 30 mins and i almost shut it off.. But then it powered down all by itself and then the Android Animation started and then it booted up just fine!!! Woot!!!!

Since the 55" is an ANDROID TV, I am debating whether or not I should try it on the 65" or just leave well enough alone.. It would sure help my decision on buying a new board if I was sure that a new board would fix the 65"....

But, given my luck, I am thinking I should just be happy with the 55" and see if get another Android SOny in from elsewhere..

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Ahhhhh Good point.. OK..

I think I got it working on the 55" which has similar specs (4K, etc etc) to the 65"..

I think I am going to NOT look a gift horse in the mouth..

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

Update on this...

I have to clear out one of my TV Storage areas..

I came across another SONY XBR with an identical Main Board as the 55".. It's from a 47" so it needs a firmware update...

As I mentioned before the 55" MainBoard does not have the connector marked in blue..

How important is that to the functionality of the 65"??

yours 65 are Android. the next should android too with same CPU Type, Same Ram manifacture as well the NAND, all of there should be 100% same. other wise you will toast other parts include the 49 boards too

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Update on this...

I have to clear out one of my TV Storage areas..

I came across another SONY XBR with an identical Main Board as the 55".. It's from a 47" so it needs a firmware update...

As I mentioned before the 55" MainBoard does not have the connector marked in blue..

How important is that to the functionality of the 65"??

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Attached is a pic of the Main Board.. Not of mine specifically.. I can get a pic of that tomorrow..

I pulled off the heat sinks and put the board on my reflow rig (also pic attached) I actually have a new T8280 Infrared preheat unit.. As you can see from the pic, that one has seen a lot of use..

Anyways, I pulled the heat sinks off and put the AOYUE 968 nozzle on the GPUs, one at a time..

Got the temp slowly up to 235c for 90 seconds...

Subsequent reflows I just heated the board on the T8280 up 370f for 90 secs...

Ironically enough I have another Sony XBR that has a very similar Main Board.. The only difference is that this board doesn't have the connector marked in BLUE.. The one on the XBR65X is an A2072598B. The one of the other XBR (I think it's a 55") is A2072599B

With the board from the 55", I get the Power LED on for a min and then it shuts off...

Like I said, I'll follow up tomorrow.. Maybe we can resurrect the dead..

Thanx again for all your help..

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Well an update on this..

I believe I have "reflowed" the board to the point of oblivion...

I get absolutely nothing now.. No power LED no nothing.. I haven't checked the voltages but I am fairly sure they will be bad news as well..

One of my (many) weaknesses is the inability to WAIT.. I just plow ahead hoping I get lucky, but usually end up stepping on my wee-wee...

I am home today, but tomorrow I plan on checking the voltages to confirm it's DOA status.. At that point, I have 2 options..

Order a board for $250 +/-....

Put the TV in a safe place and hope another like it comes thru...

The second option is not as unlikely as one might think.. I usually get anywhere from 10-30 TVs a month, oft times more.. The chances of an identical model coming thru is a distinct possibility..

Of course, I could hurry that likeliness along by actually buying the board.. It's my luck that I would pay $250 for a board and then within a day or so, an identical model comes thru!

In any case, thanx for all the help and hints and tips.. I'll follow up tomorrow with the voltages check...

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

I thought this approach was pretty clever: https://www.youtube.com/watch?v=ZDQNOU2w_ek

That's pretty awesome..

I have always been a duct tape/super glue kinda guy..

[diif]

Re: Sony XBR-65X900C Sporadic Issues

here you are

Not bad, I'm all for repurposing things and at 1200W I'd think it has more than enough heat to heat the whole board.

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

Whatever works for you, that's great. You have first hand knowledge. Does it use a GU10 bulb or is it a little larger ? Care to share any photos to help other users ?

here you are

[diif]

Re: Sony XBR-65X900C Sporadic Issues

yes.. but not always.. my lovely rework machines Korean Infared in room Table BBQ

Whatever works for you, that's great. You have first hand knowledge. Does it use a GU10 bulb or is it a little larger ? Care to share any photos to help other users ?

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

Yes, a novel idea but a DDR3 chip is smaller and thinner than a processor on a TV.
Heating a small part of the board to 220c leaving the rest cold isn't a very good idea for thermal shock reasons. It's the reason rework machines have a bottom heater.

yes.. but not always.. my lovely rework machines Korean Infared in room Table BBQ

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

Michale32086

don't give up. nothings impossible. could you shoot video to see what happen on the set screen and LED indicators when you plug it in wall socket.? also could you post photo of the main board and where you attempted reflow.. ??

Sony TV in general some time need unusual way to repair- some time it need real argue LOL.. for example.

your firmware now v5.433 as the TV set from 2015 production, other Sony in EU of 2016 production got the Android 8.0 Oreo. download one Oreo firmware and let yours TV argue.. it will do the following .. your Recovery will call out to clear data of your pervious firmware. then it will read the RSA KEY of new firmware and try to download it to temp. then your recovery will discover the model No don't matched. so it will reject the USB. and attempted to reset the pervious firmware in place. if we are lucky with this the TV will start on if no other reason.. give it try..