TV Repair: Common Faults and Solutions.
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Results: 87413
Results: 87413
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| PHILCO | PH39N91DSGWA LED | Inoperative, stand-by LED off, voltage of 12v and 5v present on the secondary. | Cw908 and cw922 blown and u4 (1117 adj) changed. | Eletrônica Barbato | |
| PHILCO | PH55X57DAG | Calls and writes philco and erases the philco logo and nothing else works, neither the remote nor the keyboard. | In my case I updated via pen drive and it accepted the update, tsound was that blue screen of updating up to 100% but it stayed the same. I noticed that sometimes after the logo was erased, tsound would be interference vertically and sometimes it didn't happen at all. I suspected the data clock line, but before seeing that, I remembered the reset and when I changed the capacitor c536 on the underside of the board the equipment started working again, as tsound is the reset circuit, I also resoldered it and cleaned it afterwards. So how did you solve it and I believe that in my case it was that. | Check reset circuit c556, n515, both underside of the board. Because as we know, the Philco logo is in the room and not in the firmware, which is why the update did not solve the problem. somehow after the logo occurred, the equipment would have to start reading the firmware memory and it didn't happen, so I thought about data clock, but maybe the reset somehow didn't happen perfectly and this prevented the correct initialization or command lines of memory. | MIGUELTV |
| SONY | HCD-GT3D | Cutting only the voice boxes, sub playing normally | Ic914 | Replace the same one, underside main board | BARBADINHA |
| LG | 21FX5 | No audio and video in av | Resistor r761 1k open | Replace 1k resistor R761 | Raimundo Tec |
| SONY | KDL-50W705A RB1G | Flashing standby led 8 times | The service manual states that it is a software defect, but in my unit, it was a shorted capacitor on the top of the main board, close to the ic2408, next to the varicap. | The capacitor was replaced, the TV turned on again, but the display was also defective, a shame. | Eletrônica ATM |
| SONY | KDL-32BX425 | TV does not turn on, standby LED blinks twice. | Shorted inverter board mosfets | I replaced the mosfets with new ones from a donor board. | Adam Kevin |
| H-BUSTER | HBTV-32D03HD | No voltages in the secondary | D912 change without measuring | Eletrônica Cecé, Brumadinho MG | |
| LG | 32LV5500 | TV doesn't turn on, no stand by, LED doesn't light up, no 3.5v | Power supply board, IC501 pin 7 oscillating between 10v and 12v, no 3.5v voltage, RL101 inoperative, D201 shorted | Replace d201 (sb560) | Wellington Uemura |
| H BUSTER | HBTV-32D05HD | Flashing blue stand-by light, power supply pulsing 5v | Open d31f that powers the primary ci driver. | Replace it with a 1n4007, pay attention to the fact that on the cathode side (white band) tsound is a ferrite ring underneath the glue. | Eletrônica Barbato |
| LG | 32LV5500 | When touching the metal part of the TV, the person receives an electrical discharge as if they touched the mains socket. | C603 with leak. | Replace c603 with an equivalent | Wellington Uemura |
| PHILIPS | 58PUG6654/78 | Blacklight on but screen without plot | Capacitor vcon c59 curto | Replaced sleep.... good luck! | Jhone Eletronica |
| AOC | T2965MS | Turns on blue LED, lights up, no image | File in memory corrupted | Regravar a memoria external link... | ELETRONICA KLEIN |
| SONY | MHC EX880 | Dead | Dz968 | Zener diode in worship, | Sivaldo eletrônica |
| PANASONIC | SA AKX16 | Display does not show characters | Add a 47k resistor in parallel with capacitor c902 on the display board | Sivaldo eletrônica | |
| SEMP TOSHIBA | LC2655(B)WDA | Blurred image | C20 on the vcom board short | Eletrônica Cecé, Brumadinho MG | |
| SONY | HCD-RG121 | I'm sound | No sound stk good, no power supply to the output relay | Replace ic371 on side plate | BARBADINHA |
| SAMSUNG | UN43AU7700G | Writer | Infinite loop | Remove the infinite loop | Nelson Marinho |
| SONY | KDL-40EX605 | In sby red LED oscillates 3 times, power LED turns on, green LED goes off, red LED oscillates 7 times. | Shorted hdmi ic, replace | CLÓVIS, caphqz,eletronica.com | |
| YAMAHA | RX-V377 | Turning off as if it were protection | Panel buttons generating poor contact | Replace all without exception | Stiltec |
| PANASONIC | TC-L32X30B | Standby LED flashes red 1x | Test LEDs and inverter 24v power supply | In my case it was the defective inverter board. | Eletrônica JJ |