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SAMSUNG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNG UN32FH4205
Only the standby LED is on, all voltages are normal, you can press the power button and nothing happens.Sem 3v3 no transistor q301Replace ic301, it is close to the headphone connector.Naldo Lima
SAMSUNG PL43D490A1G
RODRIGO COFFERI
It only turns on if the main board heats upIn addition to re-soldering everything on the other boards, check 1.2v at the output of ic204, on coil 202, if not, remove q206 next to the ic, alyRodrigo cofferiRodrigo cofferi
SAMSUNGMAX G55
No cd/usb outputOpc capacitors 1, 3, 10, 13 - 10mf 16v from mpeg board
SAMSUNGMX-C730
Doesn't startVery oxidized power supply board, completely rusted jamp broken, cutting current.Remove oxidized components and replace them.JL-Eletronica (Jorge)
SAMSUNGUN32J4000AG
Lower current from LED barsConnect an 18k resistor from pin 35 vref of the bd9397 ci to ground. It also works for Sony TVs that use this ciSérgio
SAMSUNGUN32J4290
The sound doesn't workBurnt audio controller ic (ic301)I checked the signals on the oscilloscope and tsound was no modulation on the 4 outputs, the input signals were ok, after the replacement it worked perfectly.CDS_DIAS /LEDTECH
SAMSUNGUN32F4200AG
Image with excessive brightnessV-con board damaged by cockroach piss near dc circuitTip given by Andre, thank you brother.MILENIO ELETRONICA
SAMSUNGUN40EH5000G
Standby LED blinks indicating that the TV has turned on, but the LEDs do not light up, all voltages are normal.Metal connectors on the LED bars are loose, just tighten them and the LEDs will light up again.DV Elêtronica
SAMSUNGPL43F4000AG
Turning off after a whileTs801cs and cs809s with cold solderingResoldering of ts801cs and cs809sKAIO GARCIA
SAMSUNGUN50RU7100
Does not turn on, LED is off.Line 3.2 with zero volts. Cause: shorted smd capacitor c1409 below the processor heatsink.It is used to shorting other capacitors on the same line.ELETRONICA DANIEL
SAMSUNGUN32J4000AG
AG
No videoAbsence of voff voltage, 7v9 zenner with leakD14 diode replacementdiego boeira
SAMSUNG 50RU7100
No screen imageShorted capacitor on vconRemove the capacitor that you find has a short in the VCON and replace the fuse on the main output board with Q221Lcjeletronico
SAMSUNGUN50F5500AG
BH05
Burning led busLED voltage too highReplace the value of resistors r9163,r9263 (3r) to (4r7).evando viana
SAMSUNG CL-21Z43MQ
Cup effectR411 de 82kReplace r411 of 81k cap100/25v which already had low capacitanceRogério TV
SAMSUNGUN43RU7100
No image and restartFuse y open (close to the connector that comes from the power supply) and c64 shorted on the vconReplace the two.Maurilio
SAMSUNGBE49N
TV turns on normally for a few seconds image keeps changing colors red, blue, green etc!Cleaning flat cables, or changing them! If you don't decide to change tcon with flet cables! if it does not receive a ground fault on the main boardEletrônica Manauara
SAMSUNGUN50NU7400
Blurred imageUnidentified
SAMSUNGUN40J5200AG
No image, LEDs on. Note, first of all the LEDs didn't light up.Fuse on the v-con board open and the 10uf ceramic capacitor CP6 leaking. Note, the capacitor is close to the up1 ci on the v-con board.After changing the capacitor and fuse, the TV was ok. correcting the model (un43j5200ag) mentioned in another tip sent.George Pontes
SAMSUNGUN43J5200 AG
TV without image, LEDs on. Note, first of all the LEDs didn't light up.Ceramic capacitor cp6 10uf with leakage. Note, it is close to ci up1 on the v-con board.After changing the capacitor and fuse, the TV was ok.George Pontes
SAMSUNGT27B350LB
T27B350LB
Does not turn on, only the standby LED is onReplace the dm851 diode in parallel with the dm852 (power supply board)Replace the dm851 diode in parallel with the dm852 (power supply board)CANAL ELETRONICA CEARÁ