Repair Tips
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Results: 87709
Results: 87709
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
CJ65
CJ65 |
Does not turn on - 12 volt standby supply ok | Tsound is no voltage of 3.3 volts at the output of the ic 100 (toasted) | Remove ic 100 and l101 - add dc board lm2596 - connect 12v voltage input to c109 and adjust output to 3.3v - connect output to the track wsound l101 was, junction with c171 - after that, just joy | Ruberval Rossi |
| SAMSUNG |
UN40C5000QM
|
Standby LED off, voltages ok, display ok and blacklight ok | Check the board with touch buttons, usually the SMD capacitor C03 shorts out and protects the power supply, preventing the TV from turning on | Location of the smd capacitor: close to the single electrolytic capacitor on the board, to confirm and just leave the TV plugged in and notice it heating up or with a thermal camera if you don't have it, touch it, you can feel the capacitor heating up. | Luiz |
| LG |
32LH30FR
|
Red standby, when you press the power backlight it flashes and then goes out. standby LED remains blue | Arming backlight protection | Remove smd resistor r1042 on the bottom of the main board | Pohl Informática |
| SONY |
ADP-240CR AAB
|
Perfect power supply in stand-by but when activated the 12v drops until all voltages are reset | Low voltage varying in the primary | Replace zd202 (zener diode) as it has a small leak (diode value 710) | Deo Eletrônica (81)98904-0186 |
| SAMSUNG |
LN32B530
|
Does not turn on a dead power supply, does not light up stb | Zener diode on the zm801 power supply board with small leaks. supply voltage of the ci strw on the cm808 capacitor keeps oscillating | Replace zm801 zener power supply board. | Play back |
| PHILIPS |
42PFL5332/78
|
Turning off intermittent | Photo defective couplers | I replaced all photo couplers with 817 and pc123 (that's what I had in the scrap) | Respawn Tech |
| SAMSUNG |
UN40C5000AG
PSLF121B01A |
The LED turns on and goes out quickly when plugged in, but it doesn't light up the screen or start the TV. | Use a 1k resistor between pins ps-on 18 and stby 16 to arm the power supply and carry out the tests. (use a filament lamp in series to avoid further damaging the circuit) | When you notice the absence of 5vdc or 12vdc: replace photo couplers pc 801s, pc 802s, pc 803s and pc 804s if the 12vdc still does not come back, replace zdm853 (ka or tl431) | Luiz |
| SEMP |
DL3277I(A)
|
Does not turn on, LED goes to green and back to red | Shorted smd capacitor c157 | Replacing capacitor c157 and u14 | LEANDRO VOSS |
| LG |
43LM6300
LJ9 |
Does not turn on, stand-by LED is off | Q2304 next to the rear hdmi | The TV didn't turn on, it had 3.3v, 1.5v... it didn't have the 1.0 processor, high level power supply. I made a jumper on the q2304 to test at 3.3v it worked. I replaced it and it was great. | Rafael Nunes |
| SEMP |
TV2034(C)
SK11 |
Missing the green color: after solving another problem already mentioned in another tip that was already shared sound, the TV turned on, however, with the image missing the green color in the image. | On the kinescope plate (tube), I found the resistor r522 (22Ω) open... and the 3 transistors I resolved the es of this line (q507(bf422), q508(bf423) and q509(bf422) short or open, I changed the transistors and the resistor, I resoldered the board and it failed. | Eletroboy | |
| SAMSUNG |
BE32
|
Doesn't start | Smd capacitor near the LED connector next to the coil | CLEBER LIMA RS | |
| SEMP |
TV2034(C)
SK11 |
The standby LED would come on, when pressing the on button it would turn off, the LED would go out, the relay kept beating and would not turn on; I noticed that the power supply that feeds the horizontal output went up to 170 volts. | I replaced the photo coupler, tl431, and the transistor q606 and it didn't solve the problem. After researching for a while, I found the c634 capacitor (in the second part of the chopper) dry, (without capacitance) I replaced the damn thing and it solved the problem. | I took advantage and replaced the filter capacitors on the chopper transformer secondary... and those on the horizontal output, they were all with low capacitance... they were still the original ones from the factory. | Eletroboy |
| LG |
M275WV. PS
|
Inoperative and no LED lights up | Capacitor. c 742 | With broken weld | VN eletrônico |
| PHILIPS |
50PUG6102
|
Doesn't start | Power supply | Diodo fr107g (d9103) | Brackmann |
| JVC |
32MB208
|
TV with blinking LED does not turn on. | D101 just replace for another m7 | José Luiz Mutitec Eletrônica | |
| PANASONIC |
TC-L32S20B
|
Turns on, activates the relay, flashes green several times, and then flashes red 3x. | Capacitor at the output of the flat cable connector on the main board, right side, close to a fuse wsound tsound are two capacitors | Capacitor shorted on the right side on the main board, at the output that goes to the display | Elison48 |
| VICINI |
VC7100
|
Inoperative audio output for box nº2. main box working normally. | Equalizer on/off switch with poor internal contact. | Andre F | |
| LG |
TODAS
|
Service mode | Password 0413 | Wesleyborges7 | |
| LG |
32LG80FD
|
No image, no audio, backlight on, turns off randomly power command works, remote control does not work | Large processor reballing. | I did the refill and it worked, but to get 100% just with rebaling. | eletronica plaza |
| PHILIPS |
50PUG6513/78
|
Works after a short time turns off voltage of 5 volts in coil l702 low and variano | U708 with oxidation, clean with thinner | Robison oliveira |