The friend took the Konka LCD TV LED46F5580F three-in-one board [board number 35018529], check the fuse, rectifier bridge, PFC tube and power switch tube are all intact, the main capacitor has 320V but the secondary has no output [board power supply only two groups, 12 V for the motherboard., 24V for the backlight], check the 12v rectifier diode short circuit, for the Schottky 16F020C, the power supply secondary or no output, after the power management FAN6755 has 12v, 26.8v output, confirm the button light after the button is turned on Rise, check the boost ME15N10 FET is broken, after the new lamp power supply 62v, [because the light board can not point to the screen, the initial judgment is normal], all tested all voltages found that the PFC capacitor is only 320v, FAN7930C power supply is normal but No work, change 390V.
After delivering the friend, I said that there is no backlight on the machine. I asked if the backlight bead still has an open circuit? There are many groups of lights that he can't judge. You can send it over and see it.
The screen does not light the light bar to supply 62v, IW7018-00 respectively control the 8 groups are 25v, not backlight protection or IW7018 does not work [the screen should be a few volts when the screen is bright], each group of light bars can be displayed with the tester 45v Light up. IW7018-00 1 foot 0.45v, 9 feet 3.3v [0v when shutting down], 10 feet 5v, 11 feet 3.3v, 12 feet 12v, 24. 25 feet open standby when there is a low-level trigger process, replace After IW7018-00, the screen lights up, the IC control pin is 5v, the boost capacitor is 50v, and the power supply is 25v.
Check out the list of deaths below.
1: PFC management chip FAN7930C.
2: Power management chip FAN6755.
3:12v Schottky rectifier 16F20. C
4: Boost FET ME15N10.
5: Backlight management chip IW7018-00.
6: Soldiers have a class.
Components of automobile parts
The basic unit of each part of the transportation vehicle, also called auto parts, referred to as auto parts, mainly consists of the following major parts:
Engine fittings
Throttle body, engine, powertrain, oil pump, nozzle, tensioning wheel, cylinder block, bearing bush, water pump, fuel injection, gasket, camshaft, valve, crankshaft, connecting rod assembly, piston, belt, muffler, carburetor, fuel tank, water tank, fan, oil seal, radiator, filter, generator, starter
Driveline fittings
Transmission, the gear shift lever assembly, reducer, clutch, pneumatic, electric tools, magnetic materials,, clutch disc, clutch cover, universal joint, universal ball, universal ball, the ball cage, clutch plate, transfer, scoop, synchronizer, synchronizer ring, synchronous belt, differential, differential shell, differential plate Angle gear, planetary gear, wheel frame, flange, gear box, medium Intershaft, gear, stop lever fork, drive shaft assembly, drive shaft flange
Brake fittings
Brake shoe, brake pad, brake disc, brake drum, compressor, brake assembly, brake pedal assembly, brake master cylinder, brake wheel cylinder, ABS ECU controller, electric hydraulic pump, brake camshaft, brake wheel, brake tellurium pin, brake slack adjusters, brake chamber, vacuum booster, hand brake assembly, parking brake assembly, parking brake lever assembly
Steering gear fittings
Kingpin steering knuckle ball pin...
Traveling fittings
Rear axle, air suspension system, counterweight, steel plate, tire, leaf spring, half axle, shock absorber, ring assembly, half axle bolt, axle housing, frame assembly, wheel stand, front axle
Electrical instrumentation accessories
Sensors, automotive lighting, buzzer, spark plug, battery, wiring harness, relay, audio, alarm, regulator, distributor, starter (motor), directional, automotive instrument, switch, fuse, glass lifter, generator, ignition coil, igniter
Automobile lamps and lanterns
Decorative light, headlight, searchlight, ceiling light, fog light, instrument light, brake light, taillight, turn signal, emergency light
Car modification
Tire pump, car roof frame, car top box, electric winch, car buffer, sunroof, sound insulation material, bumper, fixed wing, fender, exhaust pipe, fuel saver
Security guard against theft
Steering wheel lock, wheel lock, alarm, rearview mirror, rearview system, camera, seat belt, drive recorder, central lock,GPS, ABS, reversing radar, shift lock
The car interior
Car carpet (mat) steering wheel cover steering wheel power ball curtain, sun file...
Automotive exteriors
On the wheel hub cover, paint strip sticker license plate rack...
Comprehensive accessories
Adhesive, sealant, car tools, car spring plastic parts...
Av appliances
Tire pressure monitoring system decoder display car intercom...
Chemical nursing
Coolant, brake fluid, antifreeze, lubricating oil...
Body and accessories
Windshield wipers, car glass seat belts, airbags, instrument benches...
Maintenance equipment
Sheet metal equipment purification system tire removal machine calibration instrument...
Electric tools
Electric shear hot air gun electric jack
Auto Parts,Investment Casting Pipe,Casting For Stainless Steel,Stainless Steel Exhaust Pipes
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