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SAMSUNG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGUN55RU7100
Main electrical dischargeHas different versions. transferring components from one to another using the old board reference (if you have the other version on hand*)Adaptation: place or remove regulator q410 and adjacent ones (cap and smd resistors around it), replace the ic1603_ut memory and remove and add some resistors close to the 2 lvds connections (with a lot of patience, compare and replace little by little so as not to get lost). works perfectly. If you don't replace the image memory, it will be turned to purple. God bless us! bysc
SAMSUNGUN32FH4003G
Bn44-00492a = bn44-00554b, with identical voltages and identical connection, identical LED current voltage.MIGUELTV
SAMSUNGLN26B350F1
After a while, the PFC backlight +b turns off ok at around 388v, drive-on pin ok at around 4.7vPossible weakening of the lamps, the PCI was also damaged, the two 47/50v caps were replaced in series and that didn't solve it either.In the ci drive of the BD9893f lamps connected pin 10 to ground through an 82k resistor disabling the protectionYou tube - Direto no defeito
SAMSUNGHW-E450
SOUNDBAR
Subwoofer box did not turn on stand by turned offSubwoofer primary power supply defectReplace do c.i. (1s1c01) - ice3br4765jPAULO PINHO
SAMSUNGLN32C350D1MXZD
BN91-06144J
Turning on and off normally, but without image/audio/backlightFailure in ic203 (aoz1031ai) measured value was 1.13v instead of 3.3vReplace ic203 (aoz1041ai)leitemarcellus
SAMSUNG T27B350LB
...
It doesn't turn on, it just works on standbyDm852 diode shorted at power supplyDm852 diode shorted at power supplyLuiz Gabriel
SAMSUNGQN55Q70AAG
NAO SEI
DeadI changed the coupler photo I changed the oscillator, the same thing happened, the defect was in the diode in the dn 811 power supply, shortELETRONICA DJ
SAMSUNG UN50HU7000G
TV
Does not turn on, with standby access. A blue LED is lit on the main board. all tensions present.An smd c408 capacitor close to the audio output coils.Replace or leave without...you choose.JC Eletrônica Cícero
SAMSUNGUN48JU6000
STBY LED flashes 5 times, no image, backlight workingResistor on the v-com board in position r06 in the right corner of the screen and fuse on the t-com f800FABIO
SAMSUNGUN40EH5000
Mau contato no backlightVer r9119GIOVANO ELETRONICA
SAMSUNG T220M
Lamps turning off after a few minutes onEntering protectionRemove jamper j308 // felipe t repair electros!TAVARES
SAMSUNGLN32C450
Only turn on stand byShorted capacitor cp814 220nf by 2kHP ELETRONICA
SAMSUNGLN19R81
Inverter protectionWear of the LCD lamps.Transistor q1 is responsible for the protection circuit when the lack of phase in reverse (shorted lamp or inoperative output) or one of the phases is uneven (lamp wear) and a potential direction is generated and q1 is activated, well I put a resistor 10k from the collector of this transistor to ground and the protection circuit stopped activating, when the collector raised the voltage above 1.0vdc the protection was activated, with this resistor the collector remained stable at 0.2vdc, hence the protection circuit was deceivedEdson Caeté
SAMSUNG51F4000
Turns on very weak and grainy imageFet 9n25 on the y-sus almost at the tip of the board, tsound are two but only one was bad. I replaced it with the smk0460 and it was fine.Sylvox
SAMSUNG HTX625
ProtectionEnergyRafhael
SAMSUNG PL60F5000
Pulsing power supply, turning offI desoldered and resoldered capacitors and resistors around the ICP801 IC, I resoldered RP808 resistors and nearby resistors, I resoldered RP839 and nearby resistors, it seems that the glue under the resistors changes the resistance.Marcelo
SAMSUNGUN40C5000
No image with soundTcon board ict2 mosft open client 8817Mosfet on tcon ict2 board on output 3.3vmarcos melo
SAMSUNGUN46EH
DeadBad primaryDp808,qp801s,cp814s,fp801s. Lord put your angels sound!
SAMSUNGCL29K40MQ
Turns on vertical line appears and turns off 2 secondsUsage timeRaimundo
SAMSUNGPL 42C430A
On, off, flashing.Not being a y-sus, z sus board, check IC 202 on the main PCI.Replace ic202 (z1031a)arock