Sony kd70xf8305 very very slow android logo with sound

[reassor]

Hi.
Power is ok
Tv turns on by it self when you turn IT off with button or pług.it shows sony logo the android logo but with like 1 frame every 10 sec. Music starts after like 1 min. After some time logo will Just hang. But i can turn volume up and down on a pilote but its very slow as well.

Should i force update? If so how?

I did reset.

Mainboard Looks pristine.

Very wierd.

[EazyBone]

Re: Sony kd70xf8305 very very slow android logo with sound

Have a multimeter? Check voltages coming from PSU to main board. Show some pictures of boards and connection from PSU to main. Let us know voltages of each pin going from PSU to main and hold them there for 20-30 seconds to see if there is any variation. Report back

[Storyteller12]

Re: Sony kd70xf8305 very very slow android logo with sound

Have you tried updating the firmware? I would start there first

[Diah]

Re: Sony kd70xf8305 very very slow android logo with sound

this is the sickness in Android when NAND close to dead.. reset by press the joystick and push it down... plug the TV in wall release the joystick only when the front LED change from white to green color

[reassor]

Re: Sony kd70xf8305 very very slow android logo with sound

Left the dongle in with update and belive it did Flash and that was kinda fast too considering 1.8gig

Hard reset also same - that was the first thing.



Will check psu after holiday. But I Putin the mobo on a reballing machinę and Just kept it around 80 deg Just to prep for reball of the cpu.

Decided to try 1 more boot after that and animation was fast but it was stoping every few secs. It booted then hang. And kept hanging after that. I put the mobo in still kinda hot.

Tooday we tried alittle bit more heat to not bend the mobo but still the fricking bga popęd out so had to reball. Im 100perc sure reball was ok. Nów its Just dead. Little heat on cpu . Voltages present 0.9 , 1 , 3.3 and 5v

Thats all i Got nów.

Edit. When we got cpu out there was a few cold soter points.

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

i understand almost nothing on the last post.. please write better.. no telegram style..

[reassor]

Re: Sony kd70xf8305 very very slow android logo with sound

Sorry its the phone. Will try to fix it on PC.

[reassor]

Re: Sony kd70xf8305 very very slow android logo with sound

i understand almost nothing on the last post.. please write better.. no telegram style..

What we did :
- Update wia usb (it took a long time to start but update operation was quick)

- heated up board on a bga machine for some time to 70-80 deg C (this actually mad the animation fast nut still was stoping every 5 sec and eventualy freeze the tv)

- reballed CPU (now tv not even starts (reball was 100% ok). Cpu heast up slightly.

- Voltages present on main board: 0.9v - 1v - 3.3v - 5v


Is that better?

[Diah]

Re: Sony kd70xf8305 very very slow android logo with sound

reball have less chance succeed on Sony MB.... pasta will be sure 100%,, rework yours repair

[lotas]

Re: Sony kd70xf8305 very very slow android logo with sound

The extreme heat completely killed the eMMC.

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

reflow the ram chips..

[reassor]

Re: Sony kd70xf8305 very very slow android logo with sound

reflow the ram chips..

Thx thats my next step.

[lotas]

Re: Sony kd70xf8305 very very slow android logo with sound

reflow the ram chips..

This will no longer help, you need to look for the same motherboard from donors.

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

have you got any sign by status leds?

[reassor]

Re: Sony kd70xf8305 very very slow android logo with sound

have you got any sign by status leds?

Nope. Ram reball didn't help. But no less kinda made me feel I will not.

Thx guys. Will try some more . But will replace board probably.

[William1967]

Re: Sony kd70xf8305 very very slow android logo with sound

A common fault with these models, swapping the emmc will not help either. The problem is the IC between the processor and the scaler underneath the black coolingblock, it dies slowly after a few years. I have seen several with this problem and all with the same problem.

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

Is it the FRC? Could it be disabled by service menu?

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

can you post the main board model?

[Davi.p]

Re: Sony kd70xf8305 very very slow android logo with sound

Reading your past post, if reflowing the cpu at beginning the cpu "popped", thus popcorn effect the chip is no longer usable, sorry