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Samsung Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGLT27A550
TV doesn't turn on, LED ST BY lights up and goes out.Insufficient voltage on the main board.Power supply board replace electrolytic capacitors, cm851 560μF x 10v cm855 and cm859 1000μF x 10v, all exhausted.RNSPTEC
SAMSUNGUN48J5200
TV does not turn on blinking standby LEDI checked the voltages were varying after removing the PCI the power supply was stable I noticed that the varicap was a little rusty after opening it was full of water I dried it and cleaned it with isopropyl alcohol the TV turned on again.Drying and cleaning the varicapSalatiel10
SAMSUNGUN40C5000QM
It doesn't turn on, only with the STD BY LED on.Check photocouplers, remove and measure on a high scale (x10k) to identify possible abnormal leakage.electronicssupplyparts - Gramado/RS
SAMSUNGUN40D5500RGXZD
It kept restarting! changing the command! solved it! but after that the hdmi inputs don't work! it doesn't identify the right port! it appears changed!Enter menu 182, in option leave type=40d model ud5500 give factory reset and it is solvedRodrigo cofferi
SAMSUNGCL21C650ML
Does not turn on, LED flashes 5 times, 170v power supplyOpen horizontal transformerT402 replaceDionni
SAMSUNGPL42C450B1MXZD
Relay does not set voltage vs 220Controller board does not release vs-on and ps-onReplace the controllerON-PLAY ELETRONICA
SAMSUNGUN40D5000PG
Do not connect a 5 volt power supply or without the 13 volts and voltage of the LEDs!Causes icm803 eb6 (tl431) changed, it raises the voltage at the base of the qm801, which cuts the 15volts of the pwm circuit from the 13volt power supply and inverts!Eletrônica Yamada
SAMSUNGUN48J5200AG
Turning on normally, but no image (common fault for this TV model)Tripping the LCD display supply voltages (led2 avdd off)Isolate pin 18 of CN1 on the T-Con or RK27 board (33Ω) to release voltages and isolate the pinleitemarcellus
SAMSUNG CL21C650ML
It doesn't turn on, the LED turns on, press power, the LED pays more and doesn't turn on, the power supply goes upChange electrolytic capacitor c846 100x25v next to the relay at the power supply.Dj pituka
SAMSUNGCL21C650ML
It doesn't turn on, a defect in the power supply, the LED turns on, I press the button, the LED goes off but it doesn't turn on, the bitudo cap stays charged and the power supply goes up,Replace diodo zener zd807 , 5v6 , zd 808,4v3 e zd842 4v3DJ PITUKA
SAMSUNGCL21C650ML
Arming protection and sometimes turns onSolda fria na memorySolveEMANUEL
SAMSUNGUN46EH5000
The LEDs turn on without the main PCI, despite having all voltages stable, lighting up the bus, the moment it connects to the main PCI, it kills everything.Change secondary power supply capacitors, 470/35v, 1200/25vSIM TV
SAMSUNGUN40D5500
Piscando std by100/63v power supply capacitorSIM TV
SAMSUNGPL43F4000
NA
Dark image with reddish pigmentationPower supply board, voltage is 17.89vdc instead of 58vdc.Open resistor in the feedback network, ra875 of 3.3kΩ (smd), is in line with the VA adjustment trimpotRobusto53
SAMSUNGPL43F4000
NA
Dark image with reddish pigmentationPower supply board, voltage va with 17.89vdc instead of 58vdc. short in diode d352 (sb3200), it is close to the 3 photo-couplers.Robusto53
SAMSUNG50NU7100 50RU7100 49RU7100
Image only in the middle of the screen. like a strip of light in the middle of the screen with a normal image and the sides, everything is dark!Burnt out LED bars and high current in the LED power supply.After changing the LED bars, replace the r9201 and 9101 resistors with 4r7 x 2w resistors and sand the light-diffusing acrylic.Samuel Silva
SAMSUNGPN51H4500
It turns on whenever it wants, I noticed that on hot days it turned on easierQq807 and qq806 at power supplyReplacing std5915 transistorsFelixClank
SAMSUNGPN43H4000AG
Tsound is no VA and VS voltageIcm851 (tl 431 -smd)Icm851Tibúrcio
SAMSUNGUN40J5200 AG
Burning led bus solutionLower the LED current by removing the two low-value resistors of 2.3 homs and placing a 3.6 homs connected to the fet socket that powers the LED barsAnd good luck<small>This email address is being protected from spambots. You need JavaScript enabled to view it.</small>
SAMSUNGUN32D5000
Whitish imageDefective tconReplace capacitors smd disc c625626627 one of them has a leak. I don't know the value, I took it from another tconoskarala