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Samsung Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGUN50F5500
Turns on without image (backlight on)C204 shorted on tcon boardReplace or leave withoutMaurilio
SAMSUNGLN40D550K1G
When turning on, the LED flashes and the backlight comes on without an image and turns off returning to standbyTcom board defectShorted smd ceramic capacitor cp38, replace it or leave it without itPATRICK ELETRÔNICA
SAMSUNGUN48H4200AG
TV turns on, but no image, LEDs light up, TV with V withLeaking component on the t com, it didn't heat up.Cd10 on the run (giving 700r) at point havdd, plate v com.RNSPTEC
SAMSUNGCL21Z43MQ
I'm soundRelease the collector of the transistor qv09 next to the audio output disconnectorDJ PITUKA
SAMSUNGUE40F7000
U89A
The image vibrates at the topIc9801 slc1013Rui
SAMSUNGLN32A450
Time it turns on, time it doesn't turn onC1015HP ELETRONICA
SAMSUNGLN32D400
Without 5v, without 12vPosition transistor qb801 on the power supply board.TV CENTER GUAIBA
SAMSUNG UN40F5500AG
RestartingPoor contact between the power supply board and the main board. 1.3 power supply pins oxidized.Solder a wire directly from one board to another.Pardal - X
SAMSUNGUN65HU8700GXZD
No image and no functions on the screen (menu)Tsound is no 13v voltage that powers the t-con, due to the shorted capacitor c174, it is in the audio amplifier circuit.Moura1
SAMSUNGUN40F5200AG
The backlight keeps flashing and doesn't turn on.5v stable, 13v oscillating between 8v ~10v. defect in a smd rs802/10r resistor (close to the ics801cs) its value was altered, it measured more than 100r, thus changing the voltage from 15v on one side to less than 7v on the other, just change it for a 10r and the defect resolved!EC
SAMSUNGLN26R71B
Does not turn on red LED lights up and keeps oscillatingProblem power supply. 22uf/50v dry capacitorThe capacitor was replaced and the TV started working normally again.Adriano Miranda
SAMSUNGUN40J5200
After a while it starts restartingTransistor q210 ao4449Changing the transistor without measuring.fernando
SAMSUNGUN40C5000QM
V400H1
LED turns on, all voltages ok, has backlight, has audio, but no imageTcon - 12v fp1 fuse open (I read in another topic that it would be 3a, I'm not sure), cause: capacitor cp47 (10uf ??v) shorted, I removed it and the 12v line went up. I took advantage and, prophylactically, I also replaced its twin cp46 (same specification and are in parallel) with a 22uf 25v electrolytic capacitor. apparently it is a common defect in this tcon, if you search you will find several qp2 transistors (power mosfet) charred because these capacitors short out and lead to the fet. I was lucky because my QP2 was good. good repairs!2000
SAMSUNGUE55H6470 UE55H6500 BN44-00711
Dead qm801cs qm802csCheck/replace: fp801s (5a), nt811s(5d-13), qm801cs, qm802cs(std14nm50), rm814, rm816 (20ω), rm813, rm815(100ω), dm805, dm806(bav70), icm801(fa6a2in), cm813, cm816 (10µf/50v)Collins
SAMSUNGUE55H6470 UE55H6500 BN44-00711
Dead qp801cs qp802csCheck/replace: fp801s (5a), nt811s(5d-13), qp801cs(60r380), qp811cs(60r380), rp802, rp812 (20ω), rp801, rp811(100ω), dp801, dp811(bav70), dp808c(fmn-1106), icp801 (fa1a50n)Collins
SAMSUNGLN32FH4003G
The logo appears and turns off, the standby LED flashesCapacitor 47uf/160v secoReplace capacitor and the TV turned on perfectlyEliomar Umbelino
SAMSUNGUN40C5QMXZD
Does not turn on, no stand by light(at power supply) oxidation on an icb801 track, dead power supplyI rebuilt the track and it started working again, remembering that normally the icb801 burns out..... so it's always a good idea to testSaltech
SAMSUNGUN32F5500AG
After a while it starts to restartCold solderingI practically resoldered the entire power supply, and the TV stopped restarting.FILIPE FURTADO
SAMSUNGCL21C650ML
It doesn't turn on, normal power supply, the LED comes on, press power, it turns off and doesn't oscillate, the LED keeps blinking and every time it turns on,Replace transistor horizontal q401DJ PITUKA
SAMSUNGUN40J5200AG
Flashing LEDs, no plot, no audio and no remote control. with the power supply loose, it lights up normally.Dc/dc converter 3v3 shortReplace o capacitor c2012duc40rj