Bdl51 Lad711p Rev 30 Schematic Work -

Based on field repair data, these parts fail most often on REV 30:

| Component Label | Type | Typical Value | Failure Mode | Substitute | | :--- | :--- | :--- | :--- | :--- | | F801 | Fuse | T3.15A / 250V | Blown | Same rating, slow-blow | | IC601 (Standby) | VIPer22A | DIP-7 | Short from VDD to GND | VIPer22A (STMicro) | | R821, R822 | Startup resistors | 2 x 2.2MΩ (1/4W) | Open circuit (no 5VSB) | 2 x 2.2MΩ or 1 x 4.7MΩ/0.5W | | Q701 (LED MOSFET) | N-Channel | 8N60 (8A, 600V) | Drain-source short | 10N60, 12N60 | | R861, R862 | Sense resistors | 0.33Ω / 2W | Open or changed value | 0.33Ω, 0.27Ω, or 0.39Ω (keep pair matched) | | C801 (Main cap) | Electrolytic | 100µF 450V | Bulging, low capacitance | 120-150µF, 450V, 105°C |

Important Mod: If the TV exhibits flickering backlight on REV 30, add a 10kΩ resistor in parallel with the OVP resistor divider (from LAD711P pin 3 to ground). This raises the OVP threshold slightly but only do this if you have confirmed the LEDs are good. bdl51 lad711p rev 30 schematic work

Because "bdl51 lad711p rev 30" is a niche part number, official service manuals may be listed under alternative names:

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If no direct hit, look for a cross-reference: The same schematic topology appears as LAD710P (previous rev) and LAD712P (later rev). Compare component designators.

Even a hand-drawn functional schematic is better than nothing. You can then digitize it using KiCad or EAGLE for future repairs. Based on field repair data, these parts fail

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