TV Repair: Common Faults and Solutions.
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Results: 87436
Results: 87436
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| ROADSTAR | RS4510 | Channel 4 no sound comes out | Cap em curto cb6 = 1000µf/6,3v | Eletronica Arni-sc | |
| SAMSUNG | CL21K40MQ | First it turned on, after two minutes it turned off and didn't turn on again and it didn't even have standby | Cr 409 practically toasted | As I couldn't find the original one of 0.68nf/2kv I put one closer to the original capacitance which was 881k/2kv. it's working perfectly. | Celso |
| LG | 21FJ8RL | Horizontal outlet heating until burning | C412 304 400v | Replace the same | rafael melo ig miri pa |
| PHILIPS | 32PFL5604D/78 LC9.2LA | It does not turn on, nor does the standby LED light up, tsound is 3.3v at the power supply but not 12v | Ci l6599d 12v and 24v voltage switch defective! | Replace it only after having carried out tests on the rest of the circuit to find out if approximately 15v is getting tsound! | Lucas |
| LG | 50PT250B | The image disappears after a while and the sound becomes normal. | Loss of voltages vsc and vy causes image loss. | Resolder the ysus board with a focus on the transformers close to the vy | Antony Garcez |
| SAMSUNG | LS20CF | Turns off the screen in a few minutes | This problem on this TV is usually in the lamps, a solution without changing them would be to deactivate the protection by removing d1 and d2 on the power supply board | Miratec Eletrônica | |
| SAMSUNG | LS20CF | Turns off the screen in a few minutes | This problem on this TV is usually in the bulbs, a solution without changing them would be to deactivate the protection by removing | Miratec Eletrônica | |
| CCE | HPS-2171FS | Turns on and the LED keeps flashing all the time and no image | After spending a long time on it, I noticed that when I opened the screen, 2 colored lines appeared in the middle of the screen horizontally. | Capacitor c416 close to the horizontal baffle connector | Jailson maia |
| SONY | KDL-50R555A | Turning on, showing the Sony logo 3 times and turning off with the LED flashing 6 times. | Return line 5 of the LEDs low voltage, some LED is defective | Test by connecting a 1k resistor on the bl_err line to ground. TV works indicating that the defective LEDs should really be replaced. | Dayvid |
| AOC | LE42H254D2 | Does not turn on, completely inoperative | I report that after lightning it stopped working. Source components burned: fuse, 2 x 11n60 in the primary and a double diode in the secondary. | In the tests, through the AC power input, the fuse was found to be blown, after which the power supply was still shorted, wsound the two 11n60 MOSFETs were found to be shorted, after changing them the power supply armed the 5v. However, when turned on, it just kept pulsing, so when searching the secondary, one of the double diodes was found to be burned out. After replacing it, it went back to normal. In place of the 11n60 I put the 10n60. | Margutek.BVA |
| SAMSUNG | UN40C5000QM | No image | Main board q202 shorted or charred. | The q202 is a mosfet that feeds the t-com which damages due to something wrong with the t-com, check for shorts on the t-com, the q202 is a 6-pin mosfet, I couldn't find the TV schematic to put an original one with a lot of research I adapted another smd mosfet code: ao3407a with 3 pins that works perfectly before connecting the t-com turn on the TV without the t-com flat being connected and check if it releases the 12v line, if it releases the main board it's fine again, turn on the t-com after checking for shorts in the capacitors, I got 2 TVs with this same burning problem of the q202 and different places on the t-com one of the problems on the t-com after solving the short it still did not release the vgl and vgh which it was another smd mosfet broken with leakage, in the qp1 position it has a 3-pin mosfet and has the symbol of a ci drawn on the board, without a diagram again i used the same mosfet that i had already used in the q202 or ao3407a and then it released again the vgl and vgh voltages, only after that I turned on the display flats, making sure that all the voltages were restored, knowing that if something killed the voltages again it would only be the display itself, but both TVs and displays were good, and they worked perfectly again! I hope to help the group, as I have already been helped with other good tips published sound! | Play Back |
| PHILIPS | 42PFL3507D | Turns on whenever it wants, stand by off without 5v | Change the opto coupler ic 950 at the power supply, place a pc 817 directly replace | IRMAO | |
| LG | 21FU4RL | AV interference | Cap c803 seco 220µf/400v | Neno | |
| CCE | LH42G | It turns on and then turns off, sometimes the image and turns off, it wasn't any of the memory. | Pci signal defect | Replace the signal board | ON-PLAY ELETRONICA |
| TOSHIBA | MC 753DVD | Doesn't start | Power supply inoperative. | IC1 cq1265rt and the 18 volt dw4 zener diode were replaced. | Adriano Miranda |
| SEMP | TV2092LAV U16 | When plugged in, the LED lights up and then goes out. | Shorted flyback | Replace o flyback | FLAVIO ARAGÃO |
| PANASONIC | SA-AK330 | F61 when connecting the CD optics PCI (amplifier outputs ok) | Lack of 8 volt CD power supply. diode d5807 open | D5807 replacement | Fábio |
| CCE | HPS-2198AV | Sometimes it calls | Change capacitor c808 on 22mfx50v power supply | ELETRONEUBERT | |
| LG | 20CB20A | LED flashing intermittently | Zener diode position zd851 short or altered | Robenilsom Penedo;Al | |
| PHILIPS | 42PFL3604 TCM3.1L LA | After some time on, the screen would turn blue with a blurred OSD, the speakers would beep loudly and the screen would turn off. | C115, electrolytic, value 47uf/6v, is close to the reset stage | Replacement | Leonardo Gomes |