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Samsung Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SAMSUNGUE40H6200
Does not light up, the LED blinks. low voltage 390v (+/- 320v). 15v is missing on pin 8 of the icp801.Transistor qm821 (zg) or (7cw) with leakage
SAMSUNGUE55MU6105K
The LEDs turn on and off but no imageBad contacts in the flats
SAMSUNGUE40D6510
The TV doesn't start and keeps restarting.Reflow the mainboard
SAMSUNGLN32A450C1
It turns on standby and does not turn on via the button or control, it flashes briefly but does not turn on.Secondary power supply with capacitor cb852 (1000uf x 25v) swollen and some cold soldering.This capacitor had already been replaced previously, perhaps a chronic defect, so I added a 35v capacitor just in case.PIXEL ASSIST
SAMSUNGLE37S73BD
You lose the tuned and memorized channels. when turned on, it searches the channels again,Defect in eeprom ic3004(m24c32-wmn6tp). defect possibly due to ripple voltages from the power supply,Check power supply voltages and capacitors. reprogram eepromPascual
SAMSUNGUE46F5000AW
Does not light up, restarting and never turning onSee cold welding in the power supply choperEdson SP
SAMSUNGSYNCMASTER 540N
Turns on but no image appears, just standby light onShorted smd capacitor c614Changing the capacitor, remove it from the board and turn it on, if the image appears, replace it with another equivalent.MaskarenzzO
SAMSUNG CURVADAUN49K6500AG
Burnt out LED bus.High LED current with 91.2v and 500maReplace the LED bar (side) and replace the resistor (r9873) from 0.56r to 1r, the current drops to 88.2v and 220ma. Note: this model tends to burn out the LED bus and also the diffuser acrylic.Evando Viana
SAMSUNGLE40R86WD
When it heats up the image goes out. Sometimes it turns off, locks or freezes the screen.Defective power supply capacitors, especially the electrolytic ones inside the oscillator ci cageEdson SP
SAMSUNGUE32C5700QSXZG
TV only turns on after several attempts and insisting on the control buttonPower supply ok. ic203(z1031ai) with excessive heatingCardozo
SAMSUNGUE46ES8000
Frozen images appear, with mixed colors, the TV turns off, it appears to be the LCD panelOxidized power connectorsCardozo
SAMSUNGUN50NU7100G
Backlight keeps turning on and off, no imageI isolated some tracks from the lower lvds cable on the main board. got the perfect image. good luck to everyone!Eletrônica Cecé. Brumadinho MG
SAMSUNGLE40R74BDX
Does not have backlightAll voltages are good except those in the final stage of the inverter, ic804 (fan7382) defective.Replace ic804
SAMSUNGUN50RU7100
LED current reductionAlter resistor r9101 for 4.7rreginaldo moronte,eletronica junior caldas novas
SAMSUNGUE55KU6100
Does not work, does not turn on standby LEDVoltage of 13v with +/- 9v. Defective solders on capacitors c245, c247, c248 and c280Re-weld the affected lines
SAMSUNGUE55H6200AW
Turns on, backlight comes on but tsound is no image.Fault in the LCD panel, tsound is a short or leak in the panel capacitors.Check all capacitors connected to the power supply line, especially the 22µf capacitor at the end of the lineERP-ASSIST
SAMSUNGUE32J5200
Image with poor colors without the possibility of adjustmentR5_gain in incorrect service menu with no possibility of correctionRewrite memory 24c256ERP-ASSIST
SAMSUNGLT24B301EW
Stand-by light flashing, does not startAt power supply, 1200&microf/10v capacitor disabledERP-ASSIST
SAMSUNGLE22C450E1
Doesn't start. led blinkingCapacitor shorted to the rf inputPablo
SAMSUNGS27F358FWU
No backlightCheck replace 60v 300ma sot-23 2n70002k