No picture is a weapon. The voltages are 12v 42v and 5v. What else can I check?

Please describe exactly what is in the pictures! Good! I don't know what these symbols are.

First sentence phone keypad error, sorry. Pictures show the motherboard. These symbols are the tensions that have been measured. In the second picture you can see the overheated luck and also in the third one. In the third picture there is a voltage of 42 V. How to check the matrix backlight?

Can you read comprehension? Is it not really? I can see what the pictures show. But I will not waste my time and destroy my eyesight, what is written on these pictures! Please write in letters! Complete with this TV. No, the voltage symbol has a slightly different letter. Normally. 1000 topics have already been about this.

It's best to check quickly ... strange question for electronics.

Sorry, gentlemen, but TV is not my great passion. I have a question whether the transformer from the second picture with a thin double cable is the backlight to the matrix?

At the request of mirex I provide the data exactly: Model No 32H2HD Serial No 311060052 LVW32055DX E2 V1 MADE IN CHINA

It's still not that! What is this album ?? It says there! Plus full data from the sticker on the casing - model, product, serial. Letters. And it's best to have someone fix it, because you get nothing and nothing.

Well, I gave it to a repair facility and the guest says let it go. Model 32/1471 / GB-5B-HBKUP-EW Motherboard: TP.MSD309.BP85

Household appliances, washing machines I understand, but electronics? You can't distinguish numbers from letters: Look again if that's how it is: then as recommended:

I'll drive over there tomorrow and take a picture. The one who passed it has poor eyesight.

[Solved] Blaupunkt 32/1471-gb TV - No Picture Issue, Voltages 12V 42V 5V, Troubleshooting Tips

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#1 16991956 27 Jan 2018 12:22

stiff12 stiff12

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Post #1
16991956 27 Jan 2018 12:22

No picture is a weapon. The voltages are 12v 42v and 5v.
What else can I check?

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#2 16992012 27 Jan 2018 12:39

mirex mirex

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Post #2
16992012 27 Jan 2018 12:39

Please describe exactly what is in the pictures!

stiff12 wrote:
No picture is a weapon.

Good!
stiff12 wrote:
Voltage 12v 42v and 5v

I don't know what these symbols are.
#3 16992315 27 Jan 2018 14:48

stiff12 stiff12

Level 23

» | Topic author Helpful post? (+1)

Post #3
16992315 27 Jan 2018 14:48

First sentence phone keypad error, sorry. Pictures show the motherboard.
These symbols are the tensions that have been measured. In the second picture you can see the overheated luck and also in the third one. In the third picture there is a voltage of 42 V.
How to check the matrix backlight?
#4 16992452 27 Jan 2018 15:56

mirex mirex

Level 43

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Post #4
16992452 27 Jan 2018 15:56

stiff12 wrote:
Pictures show the motherboard.

Can you read comprehension? Is it not really?
I can see what the pictures show. But I will not waste my time and destroy my eyesight, what is written on these pictures!
Please write in letters! Complete with this TV.

stiff12 wrote:
These symbols are the tensions that have been measured.

No, the voltage symbol has a slightly different letter.

stiff12 wrote:
How to check the matrix backlight?

Normally. "1000" topics have already been about this.
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#5 16992750 27 Jan 2018 18:10

GanCegall GanCegall

Level 38

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Post #5
16992750 27 Jan 2018 18:10

stiff12 wrote:
How to check the matrix backlight?

It's best to check quickly ... strange question for electronics.
#6 17002097 31 Jan 2018 11:14

stiff12 stiff12

Level 23

» | Topic author Helpful post? (+1)

Post #6
17002097 31 Jan 2018 11:14

Sorry, gentlemen, but TV is not my great passion. I have a question whether the transformer from the second picture with a thin double cable is the backlight to the matrix?
#7 17011352 04 Feb 2018 09:42

stiff12 stiff12

Level 23

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Post #7
17011352 04 Feb 2018 09:42

At the request of "mirex" I provide the data exactly:

Model No 32H2HD
Serial No 311060052
LVW32055DX E2 V1
MADE IN CHINA
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#8 17011517 04 Feb 2018 11:04

mirex mirex

Level 43

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Post #8
17011517 04 Feb 2018 11:04

It's still not that!
What is this album ?? It says there!
Plus full data from the sticker on the casing - model, product, serial.
Letters.
And it's best to have someone fix it, because you get nothing and nothing.
#9 17020275 07 Feb 2018 19:16

stiff12 stiff12

Level 23

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Post #9
17020275 07 Feb 2018 19:16

Well, I gave it to a repair facility and the guest says let it go.

Model 32/1471 / GB-5B-HBKUP-EW

Motherboard: TP.MSD309.BP85
#10 17020375 07 Feb 2018 19:45

GanCegall GanCegall

Level 38

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Post #10
17020375 07 Feb 2018 19:45

stiff12 wrote:
repair of household appliances - washing machines, electronics,

Household appliances, washing machines I understand, but electronics? You can't distinguish numbers from letters:
Look again if that's how it is:

stiff12 wrote:
Model 32/1471 / GB-5B-HBKUP-EW

then as recommended:

mirex wrote:
it's best to have someone fix it, because you get nothing and nothing.
#11 17020394 07 Feb 2018 19:54

stiff12 stiff12

Level 23

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Post #11
17020394 07 Feb 2018 19:54

I'll drive over there tomorrow and take a picture. The one who passed it has poor eyesight.
#12 17089425 08 Mar 2018 17:57

stiff12 stiff12

Level 23
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Post #12
17089425 08 Mar 2018 17:57

I send better photos. The element under the heat sink was also replaced, which smudged brown (Mosfet JCS7N65FB). Unfortunately, the element did not change anything. I do not repair the tv, but I think that the matrix backlight is a problem, will you help me check? Please kindly.

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#13 17118753 21 Mar 2018 17:20

stiff12 stiff12

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Post #13
17118753 21 Mar 2018 17:20

I found a fault on the strips, one LED is off. Connected in series?
How can you fix the above-mentioned fault? All the slats right?

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#14 17118885 21 Mar 2018 18:46

mirex mirex

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Post #14
17118885 21 Mar 2018 18:46

mirex wrote:
What is this album ?? It says there!
Plus full data from the sticker on the casing - model, product, serial.
Letters.

mirex wrote:
I can see what the pictures show. But I will not waste my time and destroy my eyesight, what is written on these pictures!
Please write in letters! Complete with this TV.

Added after 4 [minutes]:

stiff12 wrote:
Connected in series?

You have the equipment on the table, and you ask us, how are they connected?
stiff12 wrote:
How can you fix the above-mentioned fault? All the slats right?

A rhetorical question on the forum with the level of knowledge and possibilities presented?
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#15 17119654 22 Mar 2018 06:22

stiff12 stiff12

Level 23

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Post #15
17119654 22 Mar 2018 06:22

Serial connections. My knowledge is in a different specialization, but I still want to expand it.
I am only asking for guidance in the above-mentioned problem and help from specialists, and there are such people on this forum.
I have already used the fishing rod, I have a fish, now I am asking how to frame it? Thank you in advance.
I highlighted the LEDs separately, one on the strip is damaged.
#16 17119779 22 Mar 2018 08:40

mirex mirex

Level 43

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Post #16
17119779 22 Mar 2018 08:40

Then maybe learn to read comprehension first, and then make the requests. ;)

You already got the answer to the last "problem". ;)

And if it does not satisfy you because of costs, for example, dozens of topics are already on the forum. Just read.
#17 17121885 23 Mar 2018 08:06

stiff12 stiff12

Level 23

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Post #17
17121885 23 Mar 2018 08:06

The slats are replaced and the problem is solved. Best regards. Although the "fish" was hard to frame.
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Topic summary

✨ The discussion revolves around troubleshooting a Blaupunkt 32/1471-gb TV that is experiencing a "no picture" issue despite having measured voltages of 12V, 42V, and 5V. Users analyze images of the motherboard and components, noting signs of overheating and potential faults in the matrix backlight. The author identifies a damaged LED on the backlight strips, which is confirmed to be the source of the problem. After replacing the faulty strips, the issue is resolved. The conversation highlights the importance of understanding electronic components and encourages users to seek guidance when troubleshooting.
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FAQ

TL;DR: For this Blaupunkt 32/1471‑GB no‑picture case, one LED on the backlight was dead; “one LED is off.” Replacing the LED strips restored the image. [Elektroda, stiff12, post #17118753]

Why it matters: If your 12 V and 5 V rails look fine but the screen is dark, check the LED backlight first.

Quick Facts

Affected set: Blaupunkt 32/1471/GB‑5B‑HBKUP‑EW with TP.MSD309.BP85 mainboard. [Elektroda, stiff12, post #17020275]
Diagnostic readings reported: 12 V and 5 V rails present during failure. [Elektroda, stiff12, post #16991956]
LED backlight rail measured around 42 V on this unit. [Elektroda, stiff12, post #16992315]
Strips are wired in series; one open LED can black out the screen. [Elektroda, stiff12, post #17119654]
Final fix: replacing the LED strips (“slats”) restored the picture. [Elektroda, stiff12, post #17121885]

How do I fix “no picture” when 12 V and 5 V are present?

Treat it as a backlight fault. In this case, one LED on a strip was open, disabling the entire series string. Replace the faulty LED strip(s) or the bad LED if you have tools and skills. After replacement, the picture returned, confirming the diagnosis. [Elektroda, stiff12, post #17118753]

What are the exact model and board identifiers for this issue?

Model: Blaupunkt 32/1471/GB‑5B‑HBKUP‑EW. Mainboard: TP.MSD309.BP85. Sharing these identifiers speeds parts matching and forum help. [Elektroda, stiff12, post #17020275]

Are the LED strips in this TV wired in series or parallel?

They are in series. One open LED breaks the circuit and the entire backlight shuts off. This is why a single bad diode can darken the whole panel. [Elektroda, stiff12, post #17119654]

What backlight voltage should I expect on this set?

Approx. 42 V was observed on the LED backlight rail during troubleshooting. This indicates the driver was energized but the series string was open. [Elektroda, stiff12, post #16992315]

Can a single failed LED kill the entire screen?

Yes. With series wiring, one open LED interrupts current to all LEDs, producing a completely dark image even if other rails are good. “One LED is off.” [Elektroda, stiff12, post #17118753]

I replaced the JCS7N65FB MOSFET and still have no picture—what next?

Power‑stage swaps won’t fix an open LED string. In this thread, replacing a JCS7N65FB changed nothing. Shift focus to testing and replacing the LED strips. [Elektroda, stiff12, post #17089425]

What’s a quick 3‑step way to check the backlight on this model?

Do a flashlight test on a dark screen to confirm image presence.
Measure the LED rail at the connector for activity.
Expose and test strips; replace faulty slats to restore light. “Slats replaced and problem solved.” [Elektroda, stiff12, post #17121885]

Should I replace one LED or all strips?

Replacing entire strips is the most reliable field fix. It balances brightness and color across the panel and avoids repeat teardowns. Here, replacing the slats resolved the issue. [Elektroda, stiff12, post #17121885]

What voltage readings suggest the power board is alive?

Seeing stable 12 V and 5 V rails indicates the supply and mainboard are up. If the screen is still dark, suspect the LED backlight path next. [Elektroda, stiff12, post #16991956]

How should I share details so others can help faster?

Read labels and post model, product, serial, and board codes in text, not only photos. As one expert put it, write them “in letters!” [Elektroda, mirex, post #16992452]

Who should attempt this repair?

If board IDs and measurements confuse you, hand the job to a TV technician. “It’s best to have someone fix it” when you’re stuck. [Elektroda, mirex, post #17011517]

What confirmed the root cause in this case study?

After finding a single dead LED on the strip, replacing the LED slats restored the backlight and picture. That verified the backlight as the failure point. [Elektroda, stiff12, post #17121885]

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