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Samsung Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGMX-FS8000
Turns on right after starting, give protect and turns offLack of power supply to the amplifier, high power supply does not activateJumper resistor j879 open and capacitor cm811 with little capacitance, with the replacement of these components the power supply returned to generating 52v and thus the device worked normallycharlotniu
SAMSUNG PL42A450P1
It only turns on the stand-by but does not turn on - the ps on pin keeps pulsing.Rl8025 relay receives voltage but does not activate.Rl8025 relay replacementGênios Eletronica SJ SC
SAMSUNGLN37B530P2R
The screen turns off after a while or turns on without image and sound.Photo coupler pc803s, open or changed on the diode side (pins 1 and 2).After changing the TV ok.George Pontes
TV SAMSUNG 48 TELA CURVAUN48H8000G
No image dark screen no black light8uf smd capacitor on the v-com board in short, in my case it was from the right ladi on the v-com board on the displayAnd just replace it and it's fine.Leomar Esteter
SAMSUNGHG40NC450
Call whenever you wantPrimary problem DM863C diode (replace without testing) insert 3 SB3200, secondary problem, bad contact connector of the LED bars CNL802HAHNRAHN
SAMSUNG UN40C5000
With sound without imageTcom
SAMSUNGP2470HN
Random backlight turning offThis brand of TV is a bit problematic with backlight. erased it randomly.I replaced all the electrolytics even though they were working. I redid the soldering of the transformer responsible for the backlight (tm-08190) and the TV started working again.Isaac Dias - RJ
SAMSUNGT28D310LH
Standby LED on, but does not accept powerCheck if tsound is a voltage of 5v on pins 11 and 12, if not, change the qm854 on the power supply, it releases 5v to pins 11, 12 of the power supplyReplace qm854MIGUELTV
SAMSUNG LN26B450C4M
Turns on but no images only with soundQb801 e d18323R
SAMSUNGUN32F4200AG
The screen turns off spontaneously and the bus is ok.Poor contact.Reinforce the contacts of the cable that connects the power supply board to the LED board inside the screen.Persio (TVCompany)
SAMSUNGUN46ES6500G
It doesn't turn on, the red LED just blinksShorted sems27 processor, shorting the coil and transistor close to the processor.I replaced the processor and the board worked perfectly again. The reballing didn't help because the processor was shorted.Darci Denzer
SAMSUNGUN32J4000AG
It only stays in stand bay, press the power button and the red LED flashesTransistor q244 with one side open processor without 1.2v or 1.5vReplace transistor q244Portal tec eletronica junior cat
SAMSUNGLT27A550
This TV was turning off and sometimes restarting.Poor contact on the two pins of the cable connector that takes the 5v to the signal board.Remove the connector and see if the two pins that take the 5 V to the signal board are not singed due to poor contact. If so, make a jump on the outside with a piece of wire, connecting the 5v directly from the power supply board to the signal board.Waldemar Olbertz
SAMSUNGCL21K40MQ-
Turning off, it works, after a few minutes it turns off and the speaker makes noise,Replace diodo zd805, 9v1 e zd 807 ,5v6DJ PITUKA
SAMSUNGLN32R71BXIXAZ
TV turns on, lights up and then turns off, TV works normallyT106 transformer inverts giving high or open resistanceReplace of trafficANTONIO C GASPAR
SAMSUNGUE46F6670SB BN44-00623B
The logo appears, the relay arms and switches off then, if disconnected from the network, the backlight flashesCheck and replace icm901 and ic1902 (slc2013m)Mário Martins
SAMSUNGCL21K40MQ
It doesn't turn on, tsound's just a tick, noiseChange toasted cap cr409 471.2kv this oneDJ PITUKA
SAMSUNGCL21K40MQ
Vertical closed, both at the bottom and at the top, the screen is reduced, image in the middle of the screenChange resistor r219, 390k, precision resistor, next to the processor. on pin 21 of the processor.DJ PITUKA
SAMSUNG740N
Turns on, blue LED on, no image (black screen)3 defective capacitors c301 25v 820uf and fusistor f301 125v 3a LF (green)Replace of the 3 mentioned capacitors and fusistor. Be careful, don't forget to replace the fusistor as its function on the board is to protect all spike lines. If it opened it is because the peak exceeded its thermal dissipation capacity, without it the board would have been damaged beyond repair. do not bypass by excluding the fuser from the diagram.Igor Cruz Brilhantino
SAMSUNGUN32EH4000G
Screen shaking and double imageTake r25 r37 r39GELSON