HISENSE LTDN65k560XWAU3D red light blinking

[buchman]

Hi guys,

please help, got it from a friend and I want to fix this TV so badly.
It's a 65" smart 3D tv.

The red light blinks once in a second and doesn't stop.

Checked volteges on the connector and I don't get them.

The fuse is fine. no bulged caps. I measure 315 VDC on the rectifier, is that OK?

PLEASE guys I want to fix it soooooo badly!

THANKS IN ADVANCE.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

The connector is circled in red

[attainteddragon]

Re: HISENSE LTDN65k560XWAU3D red light blinking

what voltages do you have on xb803, in standby and when you try to power it on.

a pic of the entire back of the tv would be nice too.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

I will post the volteges later.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

First, here are two picture while I am measuring capacitors with my ESR meter.
I have 2 different measurements. Is that OK?

Second, on XP803 connector I have the following volteges(with connectors XP802 and XP804 disconnected, only the AC plug connected):
18V-0
18V- 0
GND-0
STB-0
12V- fluctuate fast between 11.37-12.2
12V- fluctuate fast between 11.37-12.2
SW-0
BRI-0
GND-0
GND-0

On connectors XP802 and XP804 the voltege fluctuate fast between 3-77 volts on the 24V pins. (with connectors disconnected).
On pins I01, I02, I03, I04 it show 0 volts.

[budm]

Re: HISENSE LTDN65k560XWAU3D red light blinking

Do not bother to check those two blue safety caps.
What DCV do have on the blue lytics cap (C922) laying on its side next to inductor L921 when measured right between the two legs of the cap?
So what DCV do you get at the STB (PS-ON) when power switch is activated?
BTW, do not try to test ESR when the cap is still in the circuit due to the fact it has other component connected in parallel the cap being measured, and the ESR meter is not made for that kind of caps anyway.

[Diah]

Re: HISENSE LTDN65k560XWAU3D red light blinking

disconnect both socket xp204 & xp202 , check the 12 volts on the socket xp605 i think, the one connected to main board , it could be high to 13Volts. tell result

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

What DCV do have on the blue lytics cap (C922) laying on its side next to inductor L921 when measured right between the two legs of the cap?
So what DCV do you get at the STB (PS-ON) when power switch is activated?

On the C922 cap the voltege fluctuate fast between 11.3-12.2.

What do you mean when power switch activated? Do you mean when I press the red button on the remote control to turn on the tv?

[dskall]

Re: HISENSE LTDN65k560XWAU3D red light blinking

When you press button to turn tv on what voltage do you get on STB pin?

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

disconnect both socket xp204 & xp202 , check the 12 volts on the socket xp605 i think, the one connected to main board , it could be high to 13Volts. tell result

I am sorry but I don't see the sockets that you mentioned.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

When you press button to turn tv on what voltage do you get on STB pin?

Thanks for the clarification. I will check that and post the result.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

Here are the findings.
First, with all connectors connected the STB voltege fluctuate between 0.3-1.8 volts.
When press the power switch nothing happens and the voltege on the STB continues to fluctuate.

second, if XP802 and XP804 disconnected then the voltege on the XP803 connector on the 18V pin show zero but, if the XP802 and XP804 are connected then the voltege fluctuate on the 18V pin.

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

May be I can start checking voltages across different components to see where Is the voltage stuck but I need help with that. where to check exactly and what are the readings should be?

[buchman]

Re: HISENSE LTDN65k560XWAU3D red light blinking

anyone?

[dskall]

Re: HISENSE LTDN65k560XWAU3D red light blinking

On back of board what number is on N85?. Right of main caps

[rosatdomains2]

Re: HISENSE LTDN65k560XWAU3D red light blinking

Hello i am having same problem LTDN65K560XWAU3D. my tv is just stopped working. i opened it and checked. found out a liked cap. I changed it and now red light led is just blinking. no voltages 18v, 24, i only have 12v

[rosatdomains2]

Re: HISENSE LTDN65k560XWAU3D red light blinking

HI I have been searching everywhere for the schematics for LTDN65k560XWAU3D. can anyone help me find one?

[Deshan]

Re: HISENSE LTDN65k560XWAU3D red light blinking

Hi everyone, also have same model. HISENSE LTDN65k560XWAU3D, I find it difficult to trace without service manual or schematic.. Anyone found one yet? How to confirm if NB851 is faulty or in protection mode?
Currently I have no voltages, 24v, 18v, 12v, STB, don't even know if I'm on the right path or not..

[nomoresonys]

Re: HISENSE LTDN65k560XWAU3D red light blinking

Check all diodes on powerboard, tv unplugged from power.