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HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component

koko115 8565 19
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  • #1 18176998
    koko115
    Level 16  
    Hi.
    I received an hp omen TPN-Q194 DAG3AAMBAG0 laptop that did not respond to the power button. After quick measurements, it turns out that the 3.3V converter is not working
    No short circuits on the coils, 5V present.
    I wanted to replace the system responsible for 3.3V, however, it is coded and is called AWV7YJ. I would like to know the real name of this system in order to order a new one because I do not have a diagram of this board.
    A picture of this layout is attached

    HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component
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  • #2 18177038
    lisek
    Service technician RTV  
    Type in the "search" phrase: AWV
    You have 11 correct answers

    e.g.
    Spoiler:
    AWV - SY8286BRAC / SY8286B
  • #3 18177051
    boro1234567
    IT specialist  
    koko115 wrote:
    I would like to know the real name of this system in order to order a new one because I do not have a schematic for this board.

    SY8286BRAC.
  • #4 18177064
    koko115
    Level 16  
    Can you help me diagnose this converter? Because I'm not sure if it's the system's fault.
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  • #5 18177119
    _1KOKO
    Level 33  
    Is it getting 19v? warming up?
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  • #6 18177156
    koko115
    Level 16  
    19V is coming. He's not warming up.

    I will add that 19V from the power supply of the converters disappears after about 2 minutes after connecting the board to the power supply. Values measured immediately after connecting the power supply: No signal (EN1) on the 12th leg of SY8286BRAC. On the 11th leg (EN2) there is 4.3V
    Will these voltages be enough to start this converter?
    There is also no +3VALWP on the 9th leg of SY8286BRAC (PG) and no 3V on the 6th leg (LX signal)
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  • #7 18177271
    boro1234567
    IT specialist  
    Does it have an LDO present?
  • #8 18177276
    koko115
    Level 16  
    boro1234567 wrote:
    Does it have an LDO present?

    Yes, the LDO is 3.31V
  • #9 18177309
    lisek
    Service technician RTV  
    :!: :idea:
    Quote:
    19V from the power supply of the converters disappears after about 2 minutes after connecting the board to the power supply.


    _________________________________________
    There is an ITE8987e on this kbc board
    - read about it on the forum
    -you have 3V on the button and it drops when pressed
    - it comes to kbc and ... there is a translation of this signal ... on other pins
    - Kbc power supply you have

    HM175 SR30W chipset
    i7-7700HQ
    DDR4
    GTX 1050 (N17P-G0-A1) 2GB

    HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component

    There is no SM for this Quanta platform, but use similar solutions

    In Quanta solutions (quanta G75a... is N17P-G0-A1 1050M) / Quanta ZR?/ under AMD cpu) / DAX61CMB6DO / DA0X63MB6H1
    *other
    - you do not have a short circuit on this 3.3V line, this voltage supplies e.g. RTC and CMOS battery through e.g. a diode system > see e.g.
    HP OMEN TPN-Q194 DAG3AAMBAG0 Laptop: Identifying AWV7YJ 3.3V Converter Component
  • #10 18177590
    koko115
    Level 16  
    There is 3V on the switch.
    But for some reason the 3.3V converter does not work, I would like to explain it at the very beginning.
  • #11 18177816
    boro1234567
    IT specialist  
    koko115 wrote:

    But for some reason the 3.3V converter does not work, I would like to explain it at the very beginning.

    Possible causes include a damaged controller after excluding other causes such as no power supply, short circuit on the LDO, short circuit on the inverter output, correct control.
  • #12 18177895
    koko115
    Level 16  
    boro1234567 wrote:
    koko115 wrote:

    But for some reason the 3.3V converter does not work, I would like to explain it at the very beginning.

    Possible causes include a damaged controller after excluding other causes such as no power supply, short circuit on the LDO, short circuit on the inverter output, correct control.


    Due to the fact that the converter is powered, there is no short circuit on the LDO and there is 3.3V, there is no short circuit anywhere, i.e. replace the SY8286BRAC? Can you tell me how to check the controls? Is it about these EN1 and EN2 signals?
  • #14 18177905
    boro1234567
    IT specialist  
    koko115 wrote:
    Is it about these EN1 and EN2 signals?

    Exactly.
  • #15 18178047
    koko115
    Level 16  
    So, due to the lack of signal on EN1, I can conclude that the ITE needs to be replaced?
  • #16 18178064
    lisek
    Service technician RTV  
    Look e.g. in SM under HP on the platform (Quanta Y31A rev:C)
    -same kbc, e.g. cpu SR1EB ( i7-4510U) and GTX 870M N15P-GT-A2
    3/5V made on SY8208, EN pins
    Attachments:
    • day31amb6co.pdf (2.33 MB) You must be logged in to download this attachment.
  • #17 18178097
    koko115
    Level 16  
    lisek wrote:
    Look e.g. in SM under HP on the platform (Quanta Y31A rev:C)
    -same kbc, e.g. cpu SR1EB ( i7-4510U) and GTX 870M N15P-GT-A2
    3/5V made on SY8208, EN pins

    Suggesting this diagram, it turns out that one signal activates two 3/5V converters, this signal is S5_ON from KBC.
    But the 5V converter works.. so it can't be a faulty ITE.
    Guys, thank you for your patience, and I'm still asking for an answer and getting on the subject ;-)
  • #18 18178181
    lisek
    Service technician RTV  
    You have in attachment SM for Quanta G74A platform (DAG74AMB8D0)
    - same kbc and 3/5V chips
    - read what signals from kbc are needed to run DC-DC 3V PU10 SY8286BRAC p.39
    * dc-dc 5V is PU11 SY8288CRAC

    How can you not handle it now?

    ps
    Similar solutions on Quanta Y11A
    -same cc
    - dc-dc 3/5V on SY8208, page 38
    3V has two ENs Link_ SM under Y11C
    Attachments:
    • G74A schematic.pdf (2.7 MB) You must be logged in to download this attachment.
  • #19 18178780
    koko115
    Level 16  
    lisek wrote:
    You have in attachment SM for Quanta G74A platform (DAG74AMB8D0)
    - same kbc and 3/5V chips
    - read what signals from kbc are needed to run DC-DC 3V PU10 SY8286BRAC p.39
    * dc-dc 5V is PU11 SY8288CRAC

    How can you not handle it now?

    ps
    Similar solutions on Quanta Y11A
    -same cc
    - dc-dc 3/5V on SY8208, page 38
    3V has two ENs Link_ SM under Y11C


    From this it follows that the signals from the KBC needed to start are S5_ON and HWPG.
    Both are missing. For a fraction of a second moments after turning on the power supply, about 1.5V appears on S5_ON. I desoldered the SY 8286BRAC to check if the signals would appear, but they did not. In addition, the 5V converter stopped working then. After soldering again, the situation returned to the starting point.
    I also noticed that for 0.5 seconds after pressing the power button, the white LED in the power socket lights up.
  • #20 18178836
    lisek
    Service technician RTV  
    Quote:
    I will add that 19V from the power supply of the converters disappears after about 2 minutes after connecting the board to the power supply

    Why.?

    Please tell me what layout you have
    - in charger
    - other systems, e.g. 1.05V power supply
    Look at SM DAAX3MB16A1 how the HWPG signal is made
    - pages 24, 25, 29

    ps
    Quanta ZHKD platform (mb board: DAZKHKDMB6E0 rev: E) same kbc
    - HWPG signal shown
    -SR29E N3700 CPU

    Quote:
    no HWPG, the result of no MAIND on the PQ4 gate, > which is dependent on the MAINON coming from the ite8987e.
    - pin.80 EC_APWROK 2.4V
    - pin.33 33 EC_PWROK missing
    RSMRST# 3.3V
    SLP_S3# 3.3V
    SLP_S4# 3.3V
    KBRST# 3.3V
    HWPG 3.3V
    EC_PWROK 3.3V


    Datasheet_kbc IT8987e work application in Quanta platforms in attachment
    Look carefully.



    :?: Either Bios wrong or kbc backwards or kbc dunk
    Attachments:
    • 393657489-datasheet-IT8987E.pdf (181.34 KB) You must be logged in to download this attachment.
    • HP G62-G72 - Compaq CQ42-CQ45-CQ62 DAAX3MB16A1 Wimbledon AX3-5.pdf (687.67 KB) You must be logged in to download this attachment.
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Topic summary

✨ The discussion revolves around troubleshooting a non-responsive HP OMEN TPN-Q194 DAG3AAMBAG0 laptop, specifically focusing on the malfunctioning 3.3V converter identified as AWV7YJ. Users suggest that the converter, likely a SY8286BRAC, is not functioning due to missing enable signals (EN1 and EN2) from the ITE8987e keyboard controller (KBC). The presence of 19V input and a functioning 5V converter indicates that the issue may lie within the control signals rather than a direct fault in the converter itself. Further analysis points to the need for examining the S5_ON and HWPG signals, which are critical for the operation of the 3.3V converter. The conversation includes references to similar Quanta platform solutions and suggests checking the relevant schematics for additional troubleshooting guidance.

FAQ

TL;DR: "AWV" maps to SY8286; "AWV - SY8286BRAC / SY8286B" and "11 correct answers" confirm it. Check EN pins and KBC signals before swapping parts. Built for bench techs chasing no +3VALW on HP OMEN TPN‑Q194/DAG3AAMBAG0. [Elektroda, lisek, post #18177038]

Why it matters: Correct ID and enable-signal checks prevent unnecessary KBC or controller replacements and speed up board repairs.

Quick Facts

What component is the AWV7YJ‑coded 3.3 V converter?

It’s the Silergy SY8286 family. As one expert put it, “AWV - SY8286BRAC / SY8286B.” This code-to-part mapping appears on similar HP/Quanta boards. Use SY8286BRAC when ordering replacements unless the board variant dictates otherwise. [Elektroda, lisek, post #18177038]

How do I diagnose a dead +3VALW on SY8286 in this HP OMEN?

Follow a quick triage: 1) Confirm VIN present at the converter input after adapter plug‑in. 2) Check EN1 and EN2; EN1 low with EN2 high blocks start‑up. 3) Probe PG and LX; no PG and no LX switching means the rail never started. This pattern was observed with EN2 ≈ 4.3 V, EN1 missing, PG low, LX quiet. [Elektroda, koko115, post #18177156]

What LDO voltage should I see to confirm the controller is alive?

Expect around 3.3 V on the SY8286 LDO pin. An observed value of 3.31 V indicates internal bias is up, suggesting no LDO short and valid VIN. If LDO is missing, revisit VIN and enable conditions before condemning the IC. [Elektroda, koko115, post #18177276]

Do EN1 and EN2 pins control SY8286 start‑up?

Yes. EN1 and EN2 are the relevant control lines for enabling the 3.3 V rail. As an expert confirmed, “Exactly.” Verify both are asserted when the platform requests S5 power. A missing EN1 will keep the rail off. [Elektroda, boro1234567, post #18177905]

EN2 reads about 4.3 V but EN1 is low—what does that mean?

The controller sees one enable high while the other is deasserted. In this condition, expect no PG on pin 9 and no LX switching on pin 6, so +3VALW will be absent. Trace EN1 back to the KBC or gating transistors to restore it. [Elektroda, koko115, post #18177156]

Does a working 5 V rail prove the ITE8987E KBC is okay?

Not fully, but it suggests S5_ON likely reaches at least one converter. On similar schematics, S5_ON can enable both 3 V and 5 V rails. If 5 V works, check HWPG and the EN1 pathway for the 3.3 V rail before replacing the KBC. [Elektroda, koko115, post #18178097]

Which chip generates 5 V on related HP/Quanta boards?

On Quanta G74A, 5 V is built by SY8288CRAC (PU11) and 3.3 V by SY8286BRAC (PU10). These references match the ITE8987E KBC environment and help guide cross‑platform diagnosis when HP schematics are unavailable. [Elektroda, lisek, post #18178181]

Which KBC signals are required to release the 3.3 V rail?

S5_ON and HWPG from the ITE8987E are needed. In the case discussed, both were missing, and S5_ON only pulsed to about 1.5 V briefly at plug‑in. Restore these signals to enable the SY8286’s start‑up sequence. [Elektroda, koko115, post #18178780]

Why does 19 V disappear after about two minutes on standby?

The charger path can be disabled by KBC logic if power‑good handshakes fail. Inspect MAINON/MAIND gating, EC_PWROK, and HWPG lines from the ITE8987E. As one expert warned, “Either Bios wrong or kbc backwards or kbc dunk.” Firmware or KBC issues can cause this symptom. [Elektroda, lisek, post #18178836]

Can removing the SY8286 affect the 5 V converter?

Yes. In this case, desoldering the SY8286 stopped the 5 V rail; resoldering restored it. A white DC‑jack LED also lit for about 0.5 s when pressing power. This edge case shows interdependent enables or feedback between rails. [Elektroda, koko115, post #18178780]

After excluding shorts and bad power, when should I replace SY8286BRAC?

Replace it after you confirm VIN is present, LDO is valid, there’s no LDO or output short, and correct enables are present but the rail still won’t start. Otherwise, fix control issues first. Damaged controllers remain a common root cause after these checks. [Elektroda, boro1234567, post #18177816]

Where can I find enable/LDO application examples and resistor values?

See the shared application references and repair threads with EN and LDO networks. They include forum guides and links to platform examples that mirror SY8286 usage and thresholding. These help validate your resistor ladders and control logic. [Elektroda, lisek, post #18177899]

What else should I check on the +3VALW path besides the controller?

Verify the +3VALW line is not shorted and review backfeed paths through RTC/CMOS diodes. Confirm 3 V at the power button that drops when pressed, and ensure KBC power is valid. These checks quickly isolate non‑controller faults. [Elektroda, lisek, post #18177309]

Which schematics can I reference when HP OMEN TPN‑Q194 docs are missing?

Use Quanta G74A (DAG74AMB8D0) and Y11A as close references. They share the ITE8987E KBC and similar 3/5 V implementations (SY8286/SY8288). Review pages noted for EN and PWROK interactions to map your board. [Elektroda, lisek, post #18178181]

How do I know if missing EN1 means the KBC must be replaced?

Do not jump to KBC replacement. First verify BIOS integrity, HWPG generation, EC_PWROK, and MAINON/MAIND gating transistors. As noted, “Either Bios wrong or kbc backwards or kbc dunk.” Replace the KBC only after these inputs are confirmed correct. [Elektroda, lisek, post #18178836]
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