Orion 32LBT731 TV, Vestel 17IPS19-5 power supply - no standby

Hello

ORION 32LBT731 TV set
Vestel 17IPS19-5 V1 061112 power supply
17MB82S module
VES315WNVS matrix

Standby LED is missing
He was completely dead at first. The fuse 3.15A 250V (F100) was blown
After replacing the fuse with a new one, the standby diode was on for a few seconds.
When you try to turn on the TV, the diode has gone out and does not light up so far,
On the board, all diodes, capacitors etc are good.
The TR300 converter squeals, but it has 210-220 V voltage.
The TR200 converter does not squeal and also has 210-220 V .

According to the diagram I am looking at, the output voltages are good:
5 pin 23.8V
7 pin 12.2V
8 pin 12.2V
11 pin 5V
12 pin 12.2V

Each pin has 5V on the Standby board - the LED is off.
I checked the resistors - they are good.

The LED power socket (PL500) has a voltage of 23.8V.

When I touch the IC301 with the meter, the inverter squeaks a little differently.

IC301 - 11V
IC200 - 20V
IC302 - 1.5V

Where to find the fault? Help!

LisuuuPL wrote:

Each pin has 5V on the Standby board - the LED is off.

What is a standby board? Any markings?

LisuuuPL wrote:

IC301 chip

It's called somehow?

LisuuuPL wrote:

IC301 - 11V
IC200 - 20V
IC302 - 1.5V

What is this?

Quote:

Standby LED is missing

It is impossible to write what is missing, its designation, location and what is mounted?

LisuuuPL wrote:

The TR300 converter squeals, but it has 210-220V voltage.
The TR200 converter does not squeal and also has 210-220V.

Where is 220v?

On the left knife - at the entrance and exit

There should be 310V on the input capacitor.

Check all 220V AC power, diodes and NTC.

LisuuuPL wrote:

On the left knife

And from which side? TV is not a bicycle, left pedal, right pedal ...

Just like I added a photo. Only on the left foot is 210-220v

LisuuuPL wrote:

Only on the left foot is 210-220v

Buddy, if you don't start calling things by their names, unfortunately we can't help you, it's obvious that, for example, in pottery there is a term for left or right rotation, but in electronics you have to be more specific.
I have asked a few questions and expect specific answers.

LisuuuPL wrote:

Standby LED is missing

Put it on.

Strumien swiadomosci swia wrote:

Where is 220v?

And after ours it must be Where is 220V?

Quote:

Check all 220V AC power, diodes and NTC.

Why if the repairman claims all output voltages are correct?
I know he doesn't know what he is saying, but I believe it.

Mate repairman, ... stand back, leave that TV alone, learn simple things.
The TV is a pity for your DIY.
At least I hope your will, so your will, you may even use a hammer. But it's a pity anyway.

mirex wrote:

Mate repairman, ... stand back, leave that TV alone, learn simple things

Do I know, quite a good description of the components, except for the diode that is lit although it is not there

LisuuuPL wrote:

Standby LED is missing

LisuuuPL wrote:

After replacing the fuse with a new one, the standby diode was on for a few seconds.

But it's more interesting:

Strumien swiadomosci swia wrote:

There should be 310V on the input capacitor

Why should it be just 310V and not e.g. 312V? How was it calculated?
And what is an "input" capacitor

At first, I also "looked" at the description of the components. Unusual with us.
But then it made me wonder

LisuuuPL wrote:

17MB82S module

And then I got to the description of the measurements and I renew my proposal.

VESTEL 17IPS19-5 V.1 061112 / * barcode: 23128588 (white sticker)
- MP3394
- also Panel: VES315UNVL-01 / VES315WNDL-01 (LC320DXJ-SF E1 clone)

Under VES315WNDL-01, VES315WNDA-01, LED strips (string)> there are two lines of 11_LED (3V) on the strip_line, min. behind Link

GanCegall wrote:

LisuuuPL wrote:
Each pin has 5V on the Standby board - the LED is off.

What is a standby board? Any markings?
A standby board in the sense of the one with a red indicator - probably infrared. Where you direct the remote control to change e.g. the channel. There are 5 pins, one is ground and the other four pins are + 5V
LisuuuPL wrote:
IC301 chip

It's called somehow?
Sure - COSMO 1010 817 K30 E
LisuuuPL wrote:
IC301 - 11V COSMO 1010 817 K30 E
IC200 - 20V COSMO 1010 817 K30 E
IC302 - 1.5V COSMO 1010 817 K30 E

What is this?
Quotation:
Standby LED is missing

It is impossible to write what is missing, its designation, location and what is mounted?

There is this LED. I mean what I wrote above. The one that gives red light when the TV is in standby mode, or green when it is turned on

Added after 27 [minutes]:

I have measured the output voltages to the signal board again and they are fine,
He adds a picture of the voltages on ICs 301 200 302

And what about gentlemen, including moderators? Still believe that the topic deserves a presence on the forum?
After all, this is a clear desecration of electronics.

mirex wrote:

And what about gentlemen, including moderators? Still believe that the topic deserves a presence on the forum?
After all, this is a clear desecration of electronics.

Should I record a video with the measurements?

Added after 21 [minutes]:

https://www.youtube.com/watch?v=49yEzqhs0nc&feature=share

LisuuuPL wrote:

Should I record a video with the measurements?

Massacre, I vote for the basket. And then "empty the trash"

Topic in category "Beginning repairs"
I don't know what to expect

LisuuuPL wrote:

Topic in category "Beginning repairs"
I don't know what to expect

I will forgive my colleague, but to repair a device, you should familiarize yourself with its operation and the functioning of individual components.
Meanwhile, on the second day, my colleague writes about measurements on the IC200, IC301, IC302 systems, without even trying to find out what these systems are and what they are for.

I would like to point out that my colleague is concerned with the tensions that are dangerous to health and life. In addition, a poorly repaired AC adapter can cause a fire.

I am closing now.