Funai 40FDB7514/10 TV: LED 99V Power Supply, 17IPS20 - Correct Voltage or Too Low?

Hello, as in the subject I have only a small question, is the LED 99 V power supply correct or not too low? 17IPS20 power supply.
Please help.

Hello, probably one of the LEDs on the backlight has gone down.
greetings

Their weak point - I haven't checked yet if the image is backlit by the LED flashlight in the evening I will answer.

AWJR1951 wrote:

Hello, as in the subject I have only a small question, is the LED 99 V power supply correct or not too low? 17IPS20 power supply.

Foretell?
And what matrix? And which version of the power supply with a characteristic number?
And this is the maximum voltage appearing, measured after blocking?

Sorry, I give matrixes-VES400UNDS-03 regarding the power supply, I have 060913R3-E131175 voltage after disconnecting the plug from the panel I have 108 V as I have a multimeter plugged in including the TV, I have only a jumping 5-8V but when I highlight the matrix with a flashlight, I don't see any image - empty and dark matrix.

AWJR1951 wrote:

voltage after removing the plug from the panel I have 108 V

I understand that measured between mass and D501-503, marked as V_LED +.
Little. There is probably no BL_ON. And by the way of the T-CON supply voltage.

AWJR1951 wrote:

as I have a multimeter plugged in, including tv, I have only jumping 5-8V

I don't understand that anymore. Where plugged in?

One of the topics about this matrix and PSU link

Hello, I connected the multimeter between the A-Mass point and the B-point when it comes to LED voltage regarding T-con, the voltage measured on the fuse relative to the total mass on both sides of the fuse, I have 11.5 V.

szreder27 wrote:

Hello, probably one of the LEDs on the backlight has gone down.
greetings

A colleague wrote you what is ...

A simple matter connect the decoder (via euros) and if it will sound it means one.

buli1 wrote:

szreder27 wrote:

Hello, probably one of the LEDs on the backlight has gone down.
greetings

A colleague wrote you what is ...

Really? Are you sure? You tell the visitor to disassemble the matrix, who doesn't know how to measure the voltage to illuminate?
Have you read somewhere in the author's statements that the voltage reaches the nominal value for this matrix even for a moment?

Added after 1 [minutes]:

buli1 wrote:

A simple matter connect the decoder (via euros) and if it will sound it means one.

How about the fact that currently there is (apparently) neither backlight nor image? Even if the sound appears by some miracle, is it supposed to indicate a broken backlight?

Recently, I had several pieces of different TVs on Vestel panels with the same symptom: no picture and the voice is. In any case, damaged LED strips. The standard affliction of these panels. Even after replacing with a new panel (they exchanged for a guarantee at a friend's), the TV worked for about a year and a similar defect.

grubas wrote:

Recently, I had several pieces of different TVs on Vestel panels with the same symptom: no picture and the voice is

Really?
How many years do you fix that you can't tell the difference between no image and no backlight or both? Why does the author claim that there is no picture? He doesn't know what he is doing or is he really missing?
Although measuring is not going well, but probably even if it measures the way it measures, it should be there more than 100V. Unless you prove that 100V is correct.
Do you not read anything but write or read but do not understand?

Calmly. I know the difference perfectly. As colleagues wrote above. Connect something to the external entrance and then see what is on the matrix.

mirex - and you yours.

First of all - It's because the author does not see the image by the flashlight, I am convinced that there is no signal connected to the TV and he simply does not see the inscription no signal.

Secondly - in my cases, when you have a voice and you do not have a picture (a lot of people confuse the concept - that there is no picture can be caused by the lack of backlight and the picture is.) 90% is the fault of the backlight or LED strips.

Thirdly - I will not tell anyone to disassemble the matrix.

Fourthly - you know quite recently a quite common case - no backlight and usually ends with replacing the LEDs or entire strips.

I am waiting for your answer.

buli1 wrote:

First of all - It's because the author does not see the image by the flashlight, I am convinced that there is no signal connected to the TV and he simply does not see the inscription no signal.

How do you know that he has not pressed, for example, "Menu"?

buli1 wrote:

Secondly - in my cases, when you have a voice and you do not have a picture (a lot of people confuse the concept - that there is no picture can be caused by the lack of backlight and the picture is.) 90% is the fault of the backlight or LED strips.

Does any author measurement indicate your option? Show at least one example.

buli1 wrote:

Thirdly - I will not tell anyone to disassemble the matrix.

Yes you do. Because what else is confirmation, someone's suggestion? And further exploring the topic in the same direction? Well, unless you order not to undress, but buy another.

buli1 wrote:

Fourthly - you know quite recently a quite common case - no backlight and usually ends with replacing the LEDs or entire strips.

Once again please - indicate in the author's statements at least one element that would indicate that the matrix is damaged.
I don't see ANYONE yet. Which, of course, does not mean that it is certainly functional.

mirex - I won't talk to you because this is not the topic.

The author himself will write what was and who was right.

Sure. Because my questions cannot be answered so that it has arms and legs. So put your tail in your legs.
I made my case clear at the very beginning:

mirex wrote:

I understand that measured between mass and D501-503, marked as V_LED +.
Little. There is probably no BL_ON. And by the way of the T-CON supply voltage.

And who is here?

Hello, I am sorry for the incomprehensible description of the fault, it's only because I don't deal with this type of repairs every day, that's why I asked. Thank you for your answer. with this I have one more question - is it point to insert these diodes? personally, I think that the LCD is better for me, I have a Sony KDL40X4500 despite being hungry for energy, I'm happy with it anyway. The TV I asked for was free and zero loss. I placed a damaged matrix with efficient LED backlight, if anyone is looking, please check.
greetings

AWJR1951 wrote:

I placed an advertisement damaged matrix with efficient LED backlight

I do not understand.
In addition

Quote:

[For sale] LED backlight matrix VES315WNEA-01-B
Hello, as in the title - LED strips are in working order. The PSU that works with this matrix and the rest of the tv is-17IPS19-4 is in working order.

After all, what matrix do you sell and which TV do you repair? And why are you mixed up in this topic?

Quote:

there are 2 diodes damaged, so I have one more question - is there any point in inserting these diodes?

Worth it? Not worth it? And who is supposed to guess? Is BL_On? Is T-con already powered? Is there finally a picture or not?
Because if there are not the first two things, it needs to be further repaired, regardless of possible damage to the backlight.
After all, when switching on the TV on VLED +, full voltage should appear for a moment, i.e. about 160V, probably for this power supply and 40 "matrix. And there is none. Apparently, at least this is the result of measurements. Only 100V basic voltage appears.
As is the picture and the LED power supply works, then buy the whole strip. Because if you have a problem with measurements, I'm afraid that basting the strip, and even more so replacing the diodes themselves, will end badly.
But try.
If the whole strip, then a new adhesive tape or making holes and a proper screwing to the sheet.

Hello, as you wrote, it's not worth replacing individual LEDs, it's just a waste of time. You'll replace a few LEDs and barely turn, you will do the test, and here's the next one.
Greetings and greetings to all.

Hello everyone, it seems that I am patient for so many years. Going back to the topic I bought a backlight set in China I pasted the strips and the TV turns on only the LEDs are barely lit I will add that the voltage on the LED power supply is 116V LEDs are connected in series symbol on the strips is 40 NDV REV1. 0 strips that I peeled off are VES400 UNDS 02 strip with XY284 GHB tester so new and old strips indicate 25V power supply. If you can ask what else, you can check if these straps are appropriate.
Thank you in advance.

Takie sprzedaja na (ebay) Link
* matryca 40" VES400UNDS-01 , VES400UNDS-02 , VES400UNDS-03 or VES390UNDC-01 > TV 40PFL3008H/12, 40PFL3008K/12, 40PFL3018K/12 ,LT-40TW51
* 5 pasków po 9xLed (3V)

Skoro zasilacz
17IPS20P
PWM Power: FAN7529 (PFC), SG6742HR
LED driver: MP3394S
* 4-String, Max 200mA/String WLED Driver

Hello, thanks to everyone, especially to the fox who led me to the fault, the led strips that I mentioned are ok, I will add that the TV earlier after switching on the power supply without the motherboard, the LEDs only turned on 5 percent as I wrote and at the moment, after replacing the controller, no reaction, if I put out the motherboard after fastening the tv disc, maybe I haven't discovered America or maybe it will give someone something to think about.
Regards.

Hello,

I have a similar problem with the backlight of this matrix as in the topic from TV Funai.
At the beginning, after the extinguishing problem appeared, I put on damaged capacitors in the power supply, all of which were replaced, the test and satisfaction with it helped. It turned out after a few days that the TV works normally from time to time, but at random times it can turn off the backlight (after lighting the flashlight you can see the image on the matrix). Before I start undressing, I am asking for tips on what lists to buy to fit or what individual LEDs? I have read previous posts and I have seen suggestions as to what may fit, but I would like to finally collect this information.

It is very strange for me that the backlighting seems to work in general, but it can turn off randomly, I understand that the damage is burnt. the LEDs would be permanently broken and wouldn't work at all.

Please let me know how to finally check it.

Regards Bartek

Hello, Bartek, I would replace the unfortunate controller that is listed above, although it costs pennies on Allegro and maybe it will help.
Regards, Victor.