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S7150 A839: Identify ICM 801 System Driving MMIS60R580P Transistor in Samsung UE32N4002K TV

dudi2003 11328 13
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  • #1 18291712
    dudi2003
    Level 11  
    Posts: 80
    Rate: 8
    Board Language: polish
    Request for identification of the system as in the photo ICM 801, inscription S7150 A839. It acts as a driver for the MMIS60R580P transistor of the inverter in the Samsung UE 32N4002K TV.
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    • S7150 A839: Identify ICM 801 System Driving MMIS60R580P Transistor in Samsung UE32N4002K TV A839.jpg (549.85 KB) You must be logged in to download this attachment.
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  • #2 18291929
    ada_m
    Level 17  
    Posts: 219
    Help: 20
    Rate: 34
    Board Language: polish
    Probably the TPS7150QD chip
    500mA, Low-Dropout Voltage Regulator. Compare the application with what is on the disc.
  • #3 18948610
    nadawca
    Level 28  
    Posts: 1694
    Help: 21
    Rate: 49
    Board Language: polish
    Buddy dudi2003, have you solved the problem with this integrated circuit?
    I have the same case and can't pinpoint what kind of system it is.
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  • #4 19636761
    videotecnic
    Level 1  
    Posts: 1
    Same case for me without finding the solution, pending repair for several months.
  • #5 19638963
    Marek09
    Level 24  
    Posts: 1018
    Help: 60
    Rate: 137
    Board Language: polish
    There may be a problem with that. For example, the Russians give OB2269, from what I understood on the wires, because the pins probably do not match 1: 1, but they wrote that it works. https://monitor.net.ru/forum/threads/665450/
  • #6 19706977
    zbyszekskibinski
    Level 33  
    Posts: 2806
    Help: 179
    Rate: 340
    Board Language: polish
    ada_m wrote:
    Probably the TPS7150QD chip
    Impossible, it's a PWM driver. Did someone put OB2269 for this one and the power supply worked?
  • #7 20395312
    SLAW
    Level 12  
    Posts: 39
    Rate: 24
    Board Language: polish
    Hello, in the S7150 circuit, the transistor is CM801 blue, someone removed it for me, what is the capacity? Does anyone know where to get the S7150 apart from Ali
  • #8 20395677
    Marek09
    Level 24  
    Posts: 1018
    Help: 60
    Rate: 137
    Board Language: polish
    You can buy it at ASWO for only PLN 87.
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  • #9 20406300
    SLAW
    Level 12  
    Posts: 39
    Rate: 24
    Board Language: polish
    Hello, I wrote a week ago about identifying the CM801 element (how much Pf) I have OB2269 and I'll see if it works, The topic is watched by 8 people and no one knows what kind of kondzio it is?
  • #10 20408809
    wolf09
    Level 19  
    Posts: 212
    Help: 26
    Rate: 42
    Board Language: polish
    Witan,TPS7150QDR TPS7150QD TPS7150 7150Q SOP8 available on aliex PLN 18.50
  • #11 20414095
    Marek09
    Level 24  
    Posts: 1018
    Help: 60
    Rate: 137
    Board Language: polish
    Not any TPS, just the chip is called SEM7150A.
    And the CM801 capacitor is 220pf / 1kV (ceramic, blue).
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  • #13 20656386
    Marek09
    Level 24  
    Posts: 1018
    Help: 60
    Rate: 137
    Board Language: polish
    Post us a photo of what it looks like on the disc after such a modification as you can.
  • #14 20656410
    colorpunkt
    Level 6  
    Posts: 16
    Board Language: polish

    I don't have this TV anymore, it has been playing at the client's for 2 weeks.
    I did it on a board like in the attachment on the wires.
    S7150 A839: Identify ICM 801 System Driving MMIS60R580P Transistor in Samsung UE32N4002K TV
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Topic summary

✨ The discussion revolves around identifying the ICM 801 component marked S7150 A839, which serves as a driver for the MMIS60R580P transistor in the Samsung UE32N4002K TV. Participants suggest various alternatives, including the TPS7150QD and OB2269, while noting compatibility issues with pin configurations. The CM801 capacitor is identified as a 220pF/1kV ceramic component. Users express challenges in sourcing the S7150 and inquire about its specifications. Solutions and modifications are shared, with some users reporting successful repairs using alternative components.
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FAQ

TL;DR: CM801 is 220 pF/1 kV, and S7150 A839 identifies as SEM7150A. "Not any TPS, just the chip is called SEM7150A." This FAQ covers identification, sourcing, and safe substitutions. [Elektroda, Marek09, post #20414095]

Why it matters: This helps TV repair techs quickly identify, source, and replace the S7150/SEM7150A controller on Samsung UE32N4002K power boards without guesswork.

Quick Facts

What exactly is S7150 A839 (ICM801) on the UE32N4002K power board?

It’s the SEM7150A, a PWM controller used on this Samsung board. The S7150 marking corresponds to SEM7150A. This clarifies earlier confusion with other parts. Identify it by the S7150 A839 top mark and surrounding PWM circuitry. [Elektroda, Marek09, post #20414095]

Is the S7150 actually TPS7150?

No. "Impossible, it's a PWM driver." TPS7150 is a linear LDO and does not match the function required here. Use SEM7150A instead to restore PWM control. This avoids ordering the wrong regulator IC. [Elektroda, zbyszekskibinski, post #19706977]

What value is the blue CM801 capacitor near S7150?

CM801 is 220 pF and rated 1 kV. It is a ceramic capacitor, typically blue on this board. Replace with the same value and voltage rating if missing or damaged. This value is confirmed by an experienced member. [Elektroda, Marek09, post #20414095]

Where can I buy the SEM7150A/S7150 and what does it cost?

ASWO lists the part around PLN 87. Availability can vary, so check stock before ordering. This price point is a good benchmark when comparing other suppliers. [Elektroda, Marek09, post #20395677]

Can I use OB2269 as a substitute for SEM7150A?

Reports indicate OB2269 can work when you re-map its pins. "Pins probably do not match 1:1, but they wrote that it works." Expect to adapt the wiring rather than a drop‑in swap. Verify each pin function before powering up. [Elektroda, Marek09, post #19638963]

How do I wire a replacement controller on a small adapter board?

Build a tiny daughterboard and connect it to the original pads with short wires. Keep the leads tidy and insulated to prevent shorts. Secure the board mechanically so vibration won’t stress solder joints. This approach has been field‑tested. [Elektroda, colorpunkt, post #20656410]

Has a field-tested workaround been confirmed to hold up?

Yes. A technician reported the TV ran for 2 weeks at a client after a wired-board modification. That confirms short‑term stability under normal use. Document your wiring so future service remains clear. [Elektroda, colorpunkt, post #20656410]

What does S7150/SEM7150A drive on this Samsung board?

On this chassis, ICM801 marked S7150 acts as the driver for the MMIS60R580P inverter transistor. Use that mapping when tracing the power stage. It helps confirm you’re on the correct control circuit. [Elektroda, dudi2003, post #18291712]

Is there a complete solution thread I can follow for this fix?

Yes. A member posted a solution and linked it in the discussion. Follow that referenced post for their exact approach and notes. It complements the wiring method described here. [Elektroda, colorpunkt, post #20656262]

How can I verify the IC identity before ordering a replacement?

Compare the application around the IC with known controller topologies. "Compare the application with what is on the disc." Trace pins to the MOSFET gate drive, VCC, and feedback network to confirm PWM controller behavior. [Elektroda, ada_m, post #18291929]

What goes wrong if you misidentify the controller?

Repairs can stall. One technician kept the unit pending for several months while the exact system remained unresolved. Correct identification saves time and avoids ordering unsuitable parts. [Elektroda, videotecnic, post #19636761]

What exact marking should I look for on the chip?

Look for S7150 A839 on the package at ICM801. That marking is the board-level clue that maps to SEM7150A. Photograph the area before removal to preserve orientation. [Elektroda, dudi2003, post #18291712]

Where can I see a reference photo of a successful wired mod?

A technician shared a photo of the board with the adapter wired in. While the set is now with the client, the image shows the layout and lead routing. Use it as a visual guide. [Elektroda, colorpunkt, post #20656410]
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