Samsung UE32D5500 TV - LED Blinks 5 Times, No Sound or Remote Response, PSU Voltages OK

Hello
The TV starts up blinks the LED 5 times and it's over.
The backlight turns on for a moment at full power and dims to a minimum.

Proven PSU voltages - everything ok.
I turned on the backlight (by disconnecting the PWM signal) is correct and the voltages are correct.

No sound or response to the remote. The TV reacts to the local keyboard, i.e. it can be turned off and on as with the above-mentioned effect.

I don't know anything about how the fault happened.

On the motherboard, the voltages on the stabilizers make sense. Behind the 6V converter, there are 9, 5, 2.4 and 1.2V linear stabilizers.

Normal temperature of stabilizers.
The SEMS21 processor is about 55 * C (it burns after a while) but in total also quite normal.

LVDS bus waveforms only on EVEN TX4 and ODD TX4.


Someone from my friends made these TVs? Firmware? Anything else should I check?

best regards
Marcin

Quote:

Phrase: UE32D550 Search found 50 matches (0.27s)

on this forum

Start by checking the backlight (Samsung ch-tical 5x blinking)
- LED lines

The led backlight seems to be working. I ran the power supply itself and the voltage is ok (I described in the first post).

lisek wrote:

Start by checking the backlight (Samsung ch-tical 5x blinking)

Someone will explain what the meaning of this sentence is?
Because for me it looks like this - if something with the backlight is wrong, Samsung flashes 5 times, which is characteristic (or maybe chaotic?) With such a fault.

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mkpl wrote:

I turned on the backlight (by disconnecting the PWM signal)

I understand you mean the PWM_DIM pin.
And you can't just boot it up by disconnecting your motherboard?
It's BN44-00460A? Yes?

mkpl wrote:

SAMSUNG UE32D550

Are you sure it should be so?

mkpl wrote:

No sound

I understand that from all sources.

mkpl wrote:

Does not turn on

Well, it turns on:

mkpl wrote:

The backlight turns on for a moment at full power and dims to a minimum.

mkpl wrote:

The TV reacts to the local keyboard, i.e. it can be turned off and on

What happens after unpinning the logic?


Do you repair "hard" or have you checked the service?
https://www.elektroda.pl/rtvforum/topic17936-330.html#12464805

I have a service shop. The fact is that you just disconnect the logic and see if the backlight works. I, on the other hand, wanted to see if sometimes the logic incorrectly controls the backlight (because it turned off after a while) and if it displays anything, so it was easier for me to disconnect the control (remove the pin).

You are right with the model UE32D5500.

No reaction to the remote control, no content on the matrix (zero control), complete lack of sound and the possibility of changing inputs.

It only reacts to the on button. In the S-by, the LED lights up red and blinks 5 times after switching on and then goes off.

What do you mean by unfastening logic? Disconnecting the power supply of the motherboard or matrix LVDS (I also tried with zero result).

mkpl wrote:

What do you mean by unfastening logic? Disconnecting the power supply of the motherboard or matrix LVDS (I also tried with zero result).

Disconnecting the motherboard from the power supply should result in full illumination of the backlight.
Unplugging the logic from the motherboard is a small test for any surprises from the logic and matrix side.
If main was good, then it should be fairly normal then. Of course, connected to the power supply.

Most likely you have a common problem with these boards. It seems that in your terms it remains to buy a used one, if you meet, or contact our forum colleague by email.

What power supply, main ??? (not to be confused with matrix logic - t-con)

mkpl wrote:

What do you mean by unfastening logic? Disconnecting the power supply of the motherboard or matrix LVDS

Motherboard BN41-01660B
Power Supply

mkpl wrote:

Motherboard BN41-01660B

More specifically? Second, more important number?

mkpl wrote:

Power Supply

+ picture. And the search engine will read the name from the picture.
Can't the letters BN44-00460A and / or PD32AF_BSM or PSLF800A03C?

bogred wrote:

I would also bet on the replacement of NAND memory.

You have to start with this, not necessarily through replacement, you can reprogram the old one and it will be ok.

GanCegall wrote:

you can reprogram the old one and it will be ok.

If it has what. And he should deal with the exchange if necessary

Not further than today I have repaired such a TV with a symptom: smart on the screen and restart. I do not write about the "flashing" of the diode because it is irrelevant in Samsung. I wrote "today I fixed" because yesterday a parcel arrived from Mailo.
After the number of cases, it seems to me that this is one of the most common problems with this album.

zdzich42 wrote:

After the number of cases, it seems to me that this is one of the most common problems with this album.

Right, but not the only one, and in this case it could be something else.
We still don't know WHAT album we're writing about, Mr. Author!