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SAMSUNG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGLN40D550
K1G
League without image, with back access.Tcon. c4 with small leak. 1v2 low voltage.Board had vgh and vgl. tcon panel v400h1.joaomvjr
SAMSUNG UN40C5000QM
Standby LED off, voltages ok, display ok and blacklight okCheck the board with touch buttons, usually the SMD capacitor C03 shorts out and protects the power supply, preventing the TV from turning onLocation of the smd capacitor: close to the single electrolytic capacitor on the board, to confirm and just leave the TV plugged in and notice it heating up or with a thermal camera if you don't have it, touch it, you can feel the capacitor heating up.Luiz
SAMSUNGLN32B530
Does not turn on a dead power supply, does not light up stbZener diode on the zm801 power supply board with small leaks. supply voltage of the ci strw on the cm808 capacitor keeps oscillatingReplace zm801 zener power supply board.Play back
SAMSUNGUN40C5000AG
PSLF121B01A
The LED turns on and goes out quickly when plugged in, but it doesn't light up the screen or start the TV.Use a 1k resistor between pins ps-on 18 and stby 16 to arm the power supply and carry out the tests. (use a filament lamp in series to avoid further damaging the circuit)When you notice the absence of 5vdc or 12vdc: replace photo couplers pc 801s, pc 802s, pc 803s and pc 804s if the 12vdc still does not come back, replace zdm853 (ka or tl431)Luiz
SAMSUNGBE32
Doesn't startSmd capacitor near the LED connector next to the coilCLEBER LIMA RS
SAMSUNG UN32EH5300
Tv normal power supply main board without 5 volts std bayReplace ic 201 e ic 202Eletrosideral Sapopemba
SAMSUNG LN32C530F1M
Does not turn on, secondary voltages pulsatingCb802 at power supplyReplaceHndrsn
SAMSUNG LN32D403E2G
LED blinks, makes it turn on but doesn't turn on.Capacitor 1113 on the main board near the memory (remove)If I helped, if you can send a pix (79)98842-5366Luciano (Amplitec)
SAMSUNGLE23R81B
Does not startStand-by LED active, but does not startRm814 - 3.3k 1w + dzm802 - bzx84c27RMELECTRONICA
SAMSUNGUN40H6400AG
TV turns on but the backlight flashes or then goes out, the backlight does not remain on even if disconnected from the main PCI, in this model the normal thing is for the backlight to turn on as soon as the power supply is disconnected from the mainAfter excluding the possibility of a defect in the LED bus, check the voltage at the point in common between the components d9802, d9801 and q9802, a voltage well below 1.6 causes the backlight to trip, in the tests sound q9802 was removed from the circuit with this, the voltage returned to around 3v at this common point of the 3 components, this with the PCI disconnected from the mainLeft without the q9802Direto no defeito
SAMSUNGUN39EH5003
Doesn't workDefective +5v integrated circuitMeasuring the voltage at the remote control sensor socket it was 2.8v. Following the trail of this voltage I reached the defective IC202 integrated.ELETROFEPAR
SAMSUNGLN40C530F1M
Backlight keeps blinking like shakingReplace dp 804Leaky diodeDANGRA ELETRÔNICA SÃO PAULO
SAMSUNGPL43F4000
Sometimes it turns on, sometimes the LED doesn't even light upMoisture in the series resistors at the ac inputResolveCarlos Eletronica JL
SAMSUNG PL43F4000
Flashed standby, remained lit and did not obey remote controlSem 15v ,vs e va ,5v normalPhotocoupler connected to qs807 at power supplyHndrsn
SAMSUNG43NU/RU7100
Power supply has blown fuseFet ey18 (you can use 13nm60) cp801 and cp805 swap the two, measure between drain and power supply if it gives 500Ω on both sides the pwm ci is also burned (fa1a60)HP eletrônica
SAMSUNG UN50MU6100
Blinks stby, and LEDs blink but do not turn on, tsound is no sound or image, measuring at the main 12v power connector they oscillateFuse f233, which goes to the output of ci q211 near the connector, open and shorted smd capacitor on the right side of the v-com, position c20, I replaced it and it was perfectEletrônica Portugal
SAMSUNG PL51F4000AG BN44-00599A P51HF
Normal power on does not generate video, slight blinkingDefect on the power supply board, mosfet transistor qx854 partially shortedTest before ysus plate, plateEletrônica Sorriso Maike
SAMSUNGLN40B530P2M
Does not turn on (normal power supply)C207 short (it is next to the ic8005 memory)Capacitor eliminationduc40rj
SAMSUNGUN65HU8500GXZD
Doesn't start. Defective standby power supply. defect caused by the plastic underneath the PCI which rots and releases conductive oil and which also corrodes the boardReplacement of the IC pwm of the standby power supply s3330 position ics801 and the 1Ω resistor position rs801. Clean the board thoroughly and check for possible corrosion spots that could cause other defects on the board.rafaelmoraes99
SAMSUNGPL43F4900
Sometimes it doesn't turn on, it doesn't even light up on stand by, sometimes it turns onDo a test with a thermal blower or a head heater on the main board, if it gets hot and turns off, replace the capacitors c1024 and c1025 with 10uf/25volt electrolytic capacitors, note: observe the polarity, just find the negative side with a multimeter on the device's chassisreginaldo moronte,eletronica junior caldas novas