Sony XBR-65X900C Sporadic Issues

[nomoresonys]

Re: Sony XBR-65X900C Sporadic Issues

Looks like they want about 200+ bucks for the mb, wonder if a repair service might be more economical.

[diif]

Re: Sony XBR-65X900C Sporadic Issues

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

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.

[nomoresonys]

Re: Sony XBR-65X900C Sporadic Issues

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

[nomoresonys]

Re: Sony XBR-65X900C Sporadic Issues

A reflow shouldn't hurt IF you monitor your temps closely.

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

I recently have an xbox original (2003) that would boot up some times and others not so. Moved it from one area to another (obvious different plugs), it would boot up fine. Moved it to another area where there is an xbox that works fine... same cabling used on the "bad one" would not boot. I took the housing off to look inside while booting.... then I saw the fan having a hard time to start... it would go a bit and then stop. The fan gets its power from the main board.... I looked around and see that 3 of the 3300uf 6.3 v caps (hint... likely in the 5v circuit) in the main board area appear to have slight budge and measure out at 10kuf ... :-(

I haven't replaced them yet as local parts don't carry low voltage ones.

Anyway, your problem seems to point to issues with the 5v supply / generation.... hence my suggestion.... I would take a closer look at any place that needs or appears to need 5v plus juice... meaning the voltage might be OK but not enough current.

If I can't do a successful reset today maybe you can run thru some voltages with me on Tuesday???

Here are the pics for the 2 power boards...

If the voltages check out, I think I am just going to break down and buy the Main Board..

Kick myself to think that the LAN issue COULD have fixed the original problem had I not gone crazy with the reflow equipment..

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

your TV issue are communication between ram and main processor i think.. as you plug it with LAN all recommend apps and smart apps loading and they occupied the ram so there are no more space to let the firmware run. CPU are responsible to clear the ram and load other script. you can repeat this methode how much you can till clear it.. this will never harm the set at all. other wise you need to reflow the cpu or ram.

Yea, I think a reflow is what got me into this mess.. I might have fried something...

I'll play with resetting it more today... Maybe something will 'pop'...

[budwich]

Re: Sony XBR-65X900C Sporadic Issues

Yea, I have moved it back and forth from the display area to the work bench... I am always petrified every time I do it, but I am becoming more comfortable with moving it back and forth...

I have the back off and there doesn't appear to be any bad caps or burn marks..

One of my first thoughts was the symptoms are like the Samsungs when they have a couple charred connections off the Power PCB.. But no such luck with this one..
Funny you should mention this..

I seem to have a different problem now.. I see a different boot up process when the ANDROID animation is quicker and then I see a ANDROID IS STARTING.... loading apps message and then the TV shuts off...

NOW the biggest problem seems to be that the TV tries to boot up, but shuts off at various stages of the boot process..

And I still can't get a valid Factory Reset...

Next time I move the TV to the workbench, I'll get some shots of the power boards...

Thanx for the reply.. Much appreciated..

I recently have an xbox original (2003) that would boot up some times and others not so. Moved it from one area to another (obvious different plugs), it would boot up fine. Moved it to another area where there is an xbox that works fine... same cabling used on the "bad one" would not boot. I took the housing off to look inside while booting.... then I saw the fan having a hard time to start... it would go a bit and then stop. The fan gets its power from the main board.... I looked around and see that 3 of the 3300uf 6.3 v caps (hint... likely in the 5v circuit) in the main board area appear to have slight budge and measure out at 10kuf ... :-(

I haven't replaced them yet as local parts don't carry low voltage ones.

Anyway, your problem seems to point to issues with the 5v supply / generation.... hence my suggestion.... I would take a closer look at any place that needs or appears to need 5v plus juice... meaning the voltage might be OK but not enough current.

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

your TV issue are communication between ram and main processor i think.. as you plug it with LAN all recommend apps and smart apps loading and they occupied the ram so there are no more space to let the firmware run. CPU are responsible to clear the ram and load other script. you can repeat this methode how much you can till clear it.. this will never harm the set at all. other wise you need to reflow the cpu or ram.

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

you dont need to keep hold them pressed
from the point you plug it back to wall socket count from 1 to 10 then release and never touch it any more

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

OK, did that...

At the point to where i was holding the PWR and VOL - buttons, the green LED came on... I continued to hold the buttons.. after a few secs, the green LED went off.. I continued to hold the buttons, after about 20-30 secs the green LED came back on.. Continued to hold the buttons, then the green LED went out.. This repeated for about 4 or 5 times.. I continued to hold the buttons... Then the green LED went out and never came back on..

I never saw anything on the screen...

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

do exact the following.
disconnect the LAN and move any USB or other stuff conected to the TV SET. so the TV stay solo
while its at start and before it goes off plug it out from wall socket.
keep it plugged out about at least 5 minute or more.
press now first the power on the TV set .. keep it pressed and then press Volume -
keep both pressed and plug it at wall socket
keep them pressed even the LED change to Green. so round 10 second. and leave it let it do what it will. if you saw white with round red blue circle mean it reset all hard ware driver.. then it will show welcome screen... dont touch it. it will from alone restart and the circle will show again.. leave it till it show you the welcome screen with start music. gross finger

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

Yea, it's shutting down before I can get into it to do anything.. I think all my efforts prior to the LAN solution might have frak'ed things up beyond belief..

So frustrating..

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

if there are no air mouse under your hand.. you still can use any other PS2 USB wire mouse, it will do same job

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

ANDROID IS STARTING.... loading apps ..... mean this is effect of the way you tried before of hardware reset via volume- power.. as its didn't finish it as it should.
i dont think there are any issue with power.. you are now at level of firmware nand level issue . this you can try to trik the nand by freezing or warming up. either the sony from my experiences suffer from bad HDMI / USB Input sockets.. any one of them if Brocken or shorted will get what you have before switching to HDMI 1 alone. so inspect them

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

did you used the sony apk from the market? i wrote to you before you can use air mouse to navigate too

Yea, I don't have an air mouse for it..

Thanx for the help.. I never thought I would get this far!!

I am thinking now that it might be power related since it now shuts off even before it gets to the display...

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

looks like you are almost there. I am wondering if perhaps you have a powering issue (power board). Have you taken the back off to look at the boards yet (I know it might be a gamble with such a thin set).

Yea, I have moved it back and forth from the display area to the work bench... I am always petrified every time I do it, but I am becoming more comfortable with moving it back and forth...

I have the back off and there doesn't appear to be any bad caps or burn marks..

One of my first thoughts was the symptoms are like the Samsungs when they have a couple charred connections off the Power PCB.. But no such luck with this one..

Anyway, I am thinking that the 5v supply (if that voltage is used) might have a marginal cap in the circuit somewhere such that it isn't quite providing enough "juice" when things are trying to get running. You could perhaps verify the stuff associated with the key pad inputs to see if they are associated with anything 5v also. Get the feeling with the USB stuff that you have gone thru which might be drawing / running on a marginal 5v also.

Funny you should mention this..

I seem to have a different problem now.. I see a different boot up process when the ANDROID animation is quicker and then I see a ANDROID IS STARTING.... loading apps message and then the TV shuts off...

NOW the biggest problem seems to be that the TV tries to boot up, but shuts off at various stages of the boot process..

And I still can't get a valid Factory Reset...

Next time I move the TV to the workbench, I'll get some shots of the power boards...

Thanx for the reply.. Much appreciated..

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

did you used the sony apk from the market? i wrote to you before you can use air mouse to navigate too

[budwich]

Re: Sony XBR-65X900C Sporadic Issues

looks like you are almost there. I am wondering if perhaps you have a powering issue (power board). Have you taken the back off to look at the boards yet (I know it might be a gamble with such a thin set). Anyway, I am thinking that the 5v supply (if that voltage is used) might have a marginal cap in the circuit somewhere such that it isn't quite providing enough "juice" when things are trying to get running. You could perhaps verify the stuff associated with the key pad inputs to see if they are associated with anything 5v also. Get the feeling with the USB stuff that you have gone thru which might be drawing / running on a marginal 5v also.

[Michale32086]

Re: Sony XBR-65X900C Sporadic Issues

OK, something is DEFINITELY happening..

With the LAN plugged in, I don't get that funky black/white menu at the top..

It does to the APP screen and actually shows the correct time..

So, one hurdle overcome..

But the remote and the buttons on the TV still don't work.. I can't do a factory reset. Same symptoms.. Green LED comes on then shuts off and the TV stays off...

The TV also shuts down, but sometimes it LOOKS like it shuts down (black screen) but the power LED is still white...

So, definitely progress!

[Diah]

Re: Sony XBR-65X900C Sporadic Issues

actuality even if you are at limited access profile the RC should work. i think your RC had issue too. reset it (( take the batteries out and press Power for at least 10 second the script on the RC chip will be reset and it should work.))