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Philips TPV 715G6297 PSU 10-2-1 Power Supply: Specs, Pinout, Common Faults, Repair Tips

User question

A 715G6297 PSU 10-2-1 POWER SUPPLY

Artificial Intelligence Response

Direct answer to the question

  • “715G6297 PSU 10-2-1” designates a switch-mode power-supply board family produced by TPV/Philips.
  • It is found in many 22-55 inch Philips/TPV LCD and LED TVs (e.g. 22PFH4109, 32PHT4001, 40PFT5501, etc.).
  • Function blocks: active PFC, an always-on standby SMPS, main forward/fly-back converters for 12 V & 24 V rails, and an LED-back-light boost driver.
  • Typical outputs (exact values differ slightly by suffix ‑P01-000-00x, ‑002-00x, etc.):
    • +5 V_STBY 0.8 A • +12 V 4–6 A • +24 V 4–8 A • LED string 90-120 V, 200-400 mA
  • “10-2-1” is an internal revision / position code; electrical data are identical to other 715G6297-P01 variants.

Detailed problem analysis (primary engineering discussion)

  1. Topology overview
    • Mains → EMC filter → Bridge rectifier (BD1) → PFC boost (L601, Q601, PF6200S controller) → 400 V bus ≈ 390 VDC
    • Stand-by SMPS: fly-back around IC U801 (e.g., NCP1252) feeds +5 V_STBY through D810/C816.
    • Main converters: half-bridge forward driven by PWM U701 (PF7001S) generate +12 V and +24 V; synchronous-rectified Schottkys D721/D722.
    • LED driver: boost around IC U851 (OB3350 / PF7001S co-driver) producing controlled constant-current rail fed to panel connector CN8801.
    • Feedback & protections: opto-isolators (PC802, PC701), OVP/OTP, secondary OCP, PFC over-voltage latch.

  2. Connector & pin-out (most common “CN1” to main-board)

Pin Signal Normal voltage (ON) Notes
1 5V_STB 5.0 V Always on
2 GND 0 V Logic GND
3 PS_ON >2.5 V = Run Pulled high by main-board
4 12V 12.4 V Logic, audio
5 12V 12.4 V –
6 24V 24.5 V T-CON, inverter
7 24V 24.5 V –
8 BL_ON >2.5 V = LED ON From main-board
9 ADIM 0-3.3 V PWM/analog Brightness control

  1. Electrical ratings
    • Universal input 90-264 VAC, 50/60 Hz, PF > 0.9 (meets IEC 61000-3-2).
    • Efficiency 85-88 % at nominal load, CEC class-VI compliant for standby < 0.5 W.
    • Continuous power capability ≈ 150 W (32-40") up to ≈ 200 W (50-55"), limited mainly by transformer T701/T851 copper fill and MOSFET dissipation.

  2. Frequent failure modes
    a. Dead set, no standby LED: open input fuse, shorted bridge (BD1) or PFC MOSFET Q601, cracked startup resistor R823 (2 MΩ) – no Vcc to U801.
    b. Stuck in standby: +5 V_STBY OK, PS_ON from mainboard present, but no 12 V/24 V – usually bad electrolytic C705/C706 (47 µF/50 V), or opto PC701.
    c. Back-light flashes then TV shuts down: LED string open (one or two LEDs failed) – driver overshoot detected by OVP (~110 V) and latches off.
    d. Cyclic on/off “click” every 1-2 s: secondary short on 12 V rail (audio amp IC, USB port) causing OCP; PSU restarts.
    e. Audible hissing at light load: dried low-ESR capacitors on secondary rails increasing ripple, especially C733/C734 1000 µF/25 V.

  3. Recommended diagnostic sequence

    1. Visual inspection under 5-10× magnifier; re-solder dark pads around T701, L701, and mains connector.
    2. Stand-by check: board alone on bench, AC applied → measure 5V_STB. If <4.8 V ripple > 50 mV, ESR-check C817/C818.
    3. Force-ON test: jumper 5V_STB to PS_ON through 1 kΩ; verify 12 V/24 V stability ±2 %.
    4. LED boost test: with BL_ON high and LED harness unplugged, output should quickly rise then PWM-fold-back around 90 V (scope TP852).
    5. If PFC suspected, scope bus after bridge; should step from ≈ 320 VDC to 390 VDC once PFC starts (20 ms window).

Current information and trends

  • Newer Philips/TPV sets (2020-) replace 715G6297 with 715G9365 and integrated GaN primary transistors for >90 % efficiency; however, pin-out to main-board remained identical, allowing drop-in substitution in field repairs.
  • Component vendors have discontinued some PF7001S/PF6200S ICs; modern repair practice is to substitute NCP1653 for PFC and ICE3BR1895J for fly-back with minimal PCB modification (documented by several service bulletins 2023).
  • Environment-driven trend: using 125 °C polymer capacitors to extend TV lifetime beyond 50 k h; aftermarket kits now ship with Panasonic FR/FC or Ruby-con ZLJ series as default.

Supporting explanations and details

Practical analogy: think of the PSU as three nested supplies:
1) a 5 W “wall-wart” inside the board (standby),
2) a 200 W main converter that is enabled only when PS_ON is asserted,
3) a current-regulated boost converter servicing LEDs.
Each is protected and inter-locked; if any rail is out of spec the whole unit folds back.

Ethical and legal aspects

  • Lethal voltages (400 VDC) are present; EU Low-Voltage Directive and OSHA 1910.147 (LOTO) require qualified personnel and proper isolation.
  • Counterfeit replacement boards flood online marketplaces; always verify UL/EN-safety approvals and RoHS compliance.
  • Waste-from-Electrical-and-Electronic-Equipment (WEEE) regulations mandate recycling of failed boards rather than landfill disposal.

Practical guidelines (repair & replacement)

  1. Component choice
    • Electrolytics ≥105 °C, ESR ≤ original.
    • Replace shorted MOSFETs with equal or lower R_DS(on) and same V_DS (TK6A65DGB or STF11N60M2 equivalent).
  2. Measurement best practices
    • Isolated differential probe for primary waveform.
    • Series 100 Ω “sacrificial” resistor when first powering via Variac.
  3. Firmware interaction
    • Some suffix boards store back-light calibration in 24LC08 EEPROM; when swapping boards between TV sizes copy the data to avoid “panel dim” complaints.
  4. Common pitfalls
    • Forgetting to reconnect chassis ground strap → TV may random-reset due to EMC.
    • Mixing up BL_ON with DIM pin damages driver IC.

Possible disclaimers or additional notes

  • Pin-out table may differ on rare 715G6297-P02 editions used in Signage models (extra 33 V rail). Always confirm by silk-screen.
  • Service-manual PDFs circulating online are often low-scan copies; double-check component designators before ordering parts.

Suggestions for further research

  • Study Nexperia application note “Improving reliability of LED TV PSUs with digital PFC” to modernise legacy boards.
  • Evaluate GaN-based retrofit daughtercards for primary stage: >3 % efficiency gain at low cost.
  • Investigate automated ESR-profiling during factory test to predict warranty returns.

Brief summary

The 715G6297 PSU 10-2-1 is a universal, 150-200 W Philips/TPV switch-mode power supply providing 5 V standby, 12 V & 24 V main rails, and a high-voltage LED driver. Failures concentrate in the PFC MOSFET, fly-back startup network, secondary electrolytics, and LED strings. With proper safety precautions, systematic steps—visual check, standby verification, forced-ON testing, and LED boost evaluation—will isolate 90 % of faults. Updated service manuals and quality capacitors/mosfets ensure reliable repairs, while new GaN-based replacements point to future efficiency improvements.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.
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