Selecline 32182 TV no boot, blinks 5x start and 7x shutdown after MP3394S

vieuxchoub wrote:

Hi
I have a Selecline 32182 TV that does not boot......... It only blinks five time at the remote startup command and 7 times at the closeup command... Nothing on the screen, no sound... I have chang...

The most likely fault is not the MP3394S itself, and probably not the USB firmware.

For this Vestel set (17IPS11 + 17MB82S + VES315WNDS-01), your measurements suggest:

- 12 V present -> PSU main rail is alive
- 3.3 V standby -> this is normal for the logic section on many Vestel boards, so the earlier “it should be 5 V” diagnosis is not reliable here
- BL-ON = 5 V -> the main board is actually asking for backlight
- DIM = ~2 V -> brightness command is present
- No backlight flash at all
- No picture even with flashlight

So the TV is at least partially booting and sending the enable commands. That shifts suspicion to:

1. open/failed LED strips in the panel,
2. LED boost section on 17IPS11 other than MP3394S,
3. panel/T-CON supply missing,
4. wrong panel data / corrupted SPI contents on 17MB82S.

What I would check next

1) Measure the LED output on the PSU during power-on
Measure directly on the LED connector coming from the 17IPS11.

Do this carefully:
- meter on DC volts,
- probes on LED+ and LED-,
- turn TV on.

Possible results:

- Voltage rises briefly to a high value and then collapses
-> classic open LED strip / bad LED(s) inside the panel.

- Voltage never rises properly
-> LED driver section on PSU is still not working:
- boost diode
- MOSFET
- current-sense resistors
- output filter capacitor
- feedback path / OVP components
- bad soldering around the LED driver area

This is the single most important next measurement.

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2) Check whether panel/T-CON power is present
Since you also have no image with flashlight, do not assume it is “only backlight”.

Check the T-CON fuse (or panel supply fuse near LVDS connection):

- TV ON
- measure both sides of the fuse to chassis ground

Expected usually:
- about 12 V on both sides, sometimes another panel supply depending on version

Interpretation:
- 12 V on one side, 0 V on the other -> blown fuse
- 0 V on both sides -> main board is not enabling panel power
- correct voltage on both sides -> panel is being powered, continue with LVDS/panel-data suspicion

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3) Do not rely too much on the blink count
On Vestel sets, the front LED often blinks during boot/shutdown sequences and this is not always a meaningful fault code by itself.
So 5 blinks on startup and 7 on shutdown is not enough to conclude a specific board failure.

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Why replacing MP3394S did not help

The MP3394S is only the controller for the LED backlight boost/current driver. If:

- one LED strip is open,
- one LED is open,
- boost MOSFET is bad,
- boost diode is open/leaky,
- current-sense resistor changed value,
- LED output has bad solder joints,
- OVP feedback is wrong,

then a new MP3394S will behave exactly the same: it will try to start and then shut down.

So replacing that IC twice without measuring the LED output waveform/voltage usually does not solve the real problem.

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About the firmware

USB firmware flashing on 17MB82S helps only if:

- the set still has a working bootloader,
- the file matches the exact main board + panel option,
- SPI/NAND contents are not too corrupted.

A wrong or mismatched firmware can give:
- no picture,
- wrong LVDS mapping,
- no panel start,
- wrong backlight behavior.

So firmware is still possible, but because BL-ON and DIM are present, I would first rule out hardware:
- LED strips
- LED driver power stage
- T-CON/panel supply

Only after those checks would I go deeper into SPI dump compatibility.

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Most probable fault ranking

Based on your data, I would rank them like this:

Probability	Suspected fault	Comment
High	Open LED strip(s) / failed backlight LEDs	Very common on Vestel 32" sets
High	17IPS11 LED driver stage fault outside MP3394S	MOSFET/diode/sense/OVP path
Medium	Panel power/T-CON supply missing	Explains no visible image
Medium	Corrupt or wrong SPI firmware/panel config	Especially after trying several firmwares
Lower	Main CPU completely dead	Less likely, because BL-ON and DIM are generated

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Practical next procedure

Please perform these 3 measurements and report them:

A. LED connector voltage
- standby: LED+ to LED-
- at power-on: does it jump? to what value?
- then what value does it settle at?

B. T-CON fuse voltage
- measure both sides of fuse to chassis ground with TV ON

C. PSU connector pin voltages with cable connected
Report exact voltages for:
- 12V
- 3.3V STBY
- BL-ON
- DIM
- any PANEL_VCC / VCC_LCD / ON-OFF pin if present

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If you want the shortest diagnosis

My direct answer:
With BL-ON = 5 V and DIM = 2 V, the main board is commanding the backlight, so the fault is most likely in the backlight chain (LED strips) or in the 17IPS11 LED driver power stage, not the MP3394S IC itself.
Because you also have no image with flashlight, you must additionally verify T-CON/panel supply voltage before blaming firmware.

What I need from you now

Please send:

1. Voltage on LED output during startup
2. Voltage on T-CON fuse
3. A clear photo of the 17IPS11 around the LED driver section
4. If possible, the exact suffix of the boards:
- 17IPS11-?
- 17MB82S-?

With those values I can tell you whether to:
- open the panel and replace LED strips,
- continue repairing the PSU LED section,
- or go back to the main board / SPI firmware route.