KDL-60W600B won't open just Red Blinks 6 times

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

wHAT DO YOU HAVE ON Power supply board CN6401 BL_ERROR pin 3, BL-ON pin 5?
So far your LED connector readings do not show open circuit.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Thank for help budm, but sorry i not understand, what i need to check now to make sure which part of PSU have problem so i change it,
Thanks.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Rurn in the TV and check the DC Voltage on the power supply connector CN6401 pin 3 (BL-ERROR), and pin 5 (BL-ON) with reference to the chassis GND.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Dear budm, i had check PSU & BAXL with below results,
Multi Meter Range set on 20 DC

CN6401: on PSU
Pin 1 = 3.5 V after turn on tv it goes 0.00 V
Pin 2 to 5 = 0.00 V
Pin 6 to 8 = 12.7 V after turn on tv it goes 0.00 V
Pin 9 to 14 = 0.00 V

as per chassis GND it says Check JL9106* at (BACKLIGHT_MON) of CN9101 on the BAXL Board
so below is CN9101 resluts
Pin 1 = 3.54 V after turn on tv 3.54 V is still there
Pin 2 to 5 = 0.00
Pin 6 = 3.56 after turn on tv it goes 0.00 V
Pin 9 to 11 = 12.71 after turn on tv it goes 0.00 V
Pin 12 to 15 = 0.00 V

any advise will be highly appreciated,
Thanks.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

As per chassis GND in BAXL i have no idea where is JL9106* & i need to check how much out put with what range of Multi meter set,

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

@tom66 & @budm any suggestions?
you guys are experts and your help will be highly appreciated to find actual fault on my tv,
Thanks.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Anyone? Any help on this issue? I need help to find which board have fault so i replace that board only, since i need to buy from ebay so first make sure which is faulty, kindly help me on this point,
Thanks.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

I look through those service manual, it does not say what the normal Voltage should be if there is no backlights error.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

So there is no way we can find which one is faulty board?
Whether its PSU or BAXL or TCon,

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

I did not look in details to see if the backlights can be forced on or not to help narrowing down the board. Most power supplies and backlights cicuits can be forced using resistors between standby power supply output pin and BL-ON, and PS-ON pin.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Dear budm appreciated your reply, hope you will help me to find actual faultu board on my tv, @tom any advise? Really need help on this point,
Thanks.

[tom66]

Re: KDL-60W600B won't open just Red Blinks 6 times

Perhaps, if you are brave enough to remove 60" LCD panel, it is worth checking the LEDs in the backlight and see if they are okay.
You should be able to test them using a 3-4V power supply, some multimeters will also do this.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Thanks for advised tom, since i am not much expert so i am afraid if i open LCD panel it may damage inside panel or its totally safe to open panel? Or you think i should call some tec ppls to fix my tv, waiting for your reply,
Thanks.

[tom66]

Re: KDL-60W600B won't open just Red Blinks 6 times

It's not easy to open the panel and it's easily damaged if you are not careful. A tech may cost a lot of money though, so it's entirely up to you.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

is there any other way to check without open LCD panel?

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

You can get LED tester, something similar to this:
http://www.ebay.com/itm/0-300V-SID-G...item1c740cd5ab

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Can you check the DCV between the two legs of the filter cap C6801? That will be the Voltage that is fed to the Voltage Boost converter for driving the LED's strings.
Also need the Voltage rating of the cap C6801 and C6804, it is printed on the body of the caps.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

You can get LED tester, something similar to this:
http://www.ebay.com/itm/0-300V-SID-G...item1c740cd5ab

Thanks for help budm, appreciated your kind assistance,
so i have to open LCD panel to check whether some led got bad? from all above tests/board readings seems like my LED panel have issue right?

Can you check the DCV between the two legs of the filter cap C6801? That will be the Voltage that is fed to the Voltage Boost converter for driving the LED's strings.
Also need the Voltage rating of the cap C6801 and C6804, it is printed on the body of the caps.

Not sure if filter cap is attached image, if so than below is reading i take while tv power on, but if filter cap is different than below image than your help will be appreciated to find & test further more,
Thanks.

CN6801:
Pin 1=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 2=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 3=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 4=90 V, after turn tv on it drop slowly 89...88..87......3.2.1

CN6802:
Pin 1=13.5 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 2=13.7 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 3=13.6 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 4=13.6 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 5=0.00 V,

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Thanks for help budm, appreciated your kind assistance,
so i have to open LCD panel to check whether some led got bad? from all above tests/board readings seems like my LED panel have issue right?



Not sure if filter cap is attached image, if so than below is reading i take while tv power on, but if filter cap is different than below image than your help will be appreciated to find & test further more,
Thanks.

CN6801:
Pin 1=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 2=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 3=90 V, after turn tv on it drop slowly 89...88..87......3.2.1
Pin 4=90 V, after turn tv on it drop slowly 89...88..87......3.2.1

CN6802:
Pin 1=13.5 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 2=13.7 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 3=13.6 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 4=13.6 V, after turn tv on it drop slowly 12...11..10......3.2.1
Pin 5=0.00 V,

We already know what Voltage you have on the LED connectors, what I need is the dcv on the cap I listed above so we can find out if the boost converter is working or not. Please re-read my request again and look for those caps on that power supply board.
https://www.badcaps.net/forum/attach...1&d=1501157949

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Dear budm, sorry my bad, since i am very nervous due to it might LCD penal fault so recognized C6801 Cap as CN6801, please accept my sincere apology, will check & get back to you with results,
Thanks