TV Repair: Common Faults and Solutions.
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Results: 87573
Results: 87573
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| PHILCO | PH39R25DSG | Turns on, then the image goes off and only the sound remains, with a flashlight you can see the image on the display. | Shorted LED bars, out of a total of 40 LEDs, 16 were shorted, brightness control MOSFET burned on the board, damaging the plastic protection above and below the power supply board! | Replace the shorted LEDs, or buy new bars! Replace the TF450 MOSFET (AOTF450L), replace it with a TF454 MOSFET, which despite its VDS being smaller, looks great! | Lucas |
| LG | 42LS4600 | TV turned on, had sound but no image appeared | Oxidized display bar, that thin bar that goes to the t-con | Replaced c126, c127, c128, c129, c130 | Ramonxxl |
| SONY | MHC-DX70 | Push power protection | At first it would be the STK outlet, but when I opened it I noticed that tsound was a very dry factory glue between c596 and c546, hiding r561 and r511. | I removed c596 and c546, cleaned the area and realized that r561 was open. I replaced r561 and r511 with 100Ω film resistors, following the service manual. | Rodrigo Lamego |
| PHILIPS | 14PT414A | Does not turn on, power supply less than 20v | C2540 100µ 25v | Changing the c2540 close to the power supply trimpot | Marcelo Piranga |
| CCE | HPS 2097 | Does not turn on, LED blinks 9 times twice and returns to STBY. The 33ufx160v capacitor was exhausted, it was replaced but it didn't solve the problem. | After much searching, tsound was a small flaw in the soldering of the d807 diode which, after being redone, the TV started working again. | Carlão | |
| PANASONIC | SA AK110 | F61 | Open fusitor test off board | R 533 | Gel |
| LG | 32SC460 | Doesn't start. LED does not light up. It only has 3.5v. | I replaced both photo couplers. IC502 and IC503. everything worked. | I also cleaned the tcom flat cable. good luck!! | PERNAMBUCANO |
| ELSYS | 2,0 DUOMAX | Tuning as if it were out of sync | None c122 as high esr and low capacitance | DEBIQUE | |
| SAMSUNG | UM 32FH4003G | Turns on the screen but no image appears | Turns on the screen but no image appears | What could it be | Alex |
| PHILCO | PH20U21D | Completely stopped | Cap.smd c736 was replaced which caused a short in the 12vts line | José delta line | |
| LG | 32SC460 | Doesn't start. LED does not light up. It only has 3.5v. | I replaced both photo couplers. IC502 and IC503. | I also cleaned the tcom flat cable. good luck!! | PERNAMBUCANO |
| PHILCO | TP2920 | It doesn't turn on, nor does the LED light up, it only turns on if you resolder the power supply area or place a hot dryer in the power supply area. | Change without measuring, d915, d914, zd906,zd903,zd904, ic902 photocoupler, ic903 tl431 c943 and c927 | Replace without measuring, d915, d914, zd906,zd903,zd904, ic902 photocoupler, ic903 tl431 c943 and c927 | DJ PITUKA |
| SEMP | 2134 B SL | In stanby, all normal power supplys, heating the resistor that powers the drive transistor, TV does not turn on | Altered or shorted zd202 zener diode zd202, it is tsound at the end of the general processor | To replace | Velk Dj |
| PHILIPS | FX30X/78 FX30 | Doesn't start | N channel mosfet (q13) does not switch the +5va to the panel. | Replace the component. | barcelos32 |
| PANASONIC | TC-P50X5 ME21530422 | Don't catch | Disconnect | ||
| SEMP | TV-2934 (B) SL SK-9 | Power supply does not work, fuse blown, c607 shorted. (before maintenance/resoldering, the power supply was working or tsound was no short on the c607) | The technician must be careful with all circuits with strw6556a like the one on this TV, as the capacitor c607 (220uf/400v) is not automatically discharged by the str, even after several hours it may have some energy in it. | Discharge the capacitor before resoldering the str. If you forget to discharge and the fuse blows, if the c607 has a short circuit, remove the str and check if the short circuit has disappeared. | R |
| PHILCO | PH58E30DSG | When turned on, it works normally, after a few minutes, the image is blurry/distorted in bright light scenes | Clean all ends of lvds cables and cover with silicone tape to prevent recurrence | Victor Paz | |
| PANASONIC | LC-42E5GB | The red light is on when you press to turn on nothing, neither sound nor image | The red light is on when you press the button to turn on nothing, neither sound nor image | I don't know | |
| SEMP TOSHIBA | 32L2400 | Does not turn on, LED is on in stand-by | Icn805 1117-33 | Replaced the regulator n805 - 1117-33 (3.3v only gave 3.0v.) | Eletrônica Adiltec |
| PHILIPS | 32PFL3008 | Dead | C709 smd na pci main | I took it out | Adrian Chapadão do Céu Goiás |