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Results: 88099
Results: 88099
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
42LB9RTA
|
LED changes red to green, no image, no lighting and no 12v and 24v voltage, pfc doesn't work. | R 314 or 313 open 820k | Hndrsn | |
| PANASONIC |
TC-L32B6B
KM21 |
Doesn't start. The LED flashes and goes into stand by. | Defective LED bars. 2 LEDs and short and 1 open. to replace. 3v LEDs. | I lowered the circuit current to avoid return. because the device had already been repaired on another occasion in another place (and what a compromise! made swollen without dissipation to the housing.). As it was the second repair, I removed the inverter resistors. r251, r252 and r253 (both 20r). the measurements were: 76v and 405ma. they were: 70.7v and 253ma. | Eletrônica R-Tec |
| SONY |
KDL-32EX650
AZ1-N |
Red LED flashes 3x and the TV does not turn on. measuring 12v voltage for the audio, it dropped to zero 4 seconds after switching on. | 3.15a f3700 burnt out | Replace 3.15a smd fuse. | Hermes |
| LG |
21FU6TL
|
Without synchronization lying down image | Changing the r512 value 22k it was measuring 23k after the change the tv worked | Electronic badri | badri eletronica |
| SAMSUNG |
PL51F4000
|
Sometimes it turns on, sometimes it gives no signal, sometimes it turns off out of nowsound and stays dead for a while | 3v3 from eeprom failing | 3v3 regulator failing, ic806, I adapted another larger one, from the 1117 smd series with wires | davi.sls |
| PHILIPS |
42PFL700G
|
TV turns off by itself and turns back on | Voltage regulator 3.3v u701 on the main board heats up and turns off the TV, when it cools it turns on again, test it with the thermal blower and you will see | Regulator replacement | Claudio Eckert |
| SEMP TOSHIBA |
DL3244
|
TV without image, but had backlight | Defect in the v-com, shorted capacitor was killing the 15v of the avdd, | Replace capacitor c25 with another of the same size | Tec. Daniel Schmidt |
| SHARP |
LC-60LE632B
|
It doesn't turn on anything, not even stand by. | Defect in the power supply primary | R7914 - 022r, ic7905 - tny264pn 7-pin oscillator, ic7902 - 6-pin oscillator, d7906, | Carlos Araujo |
| SONY |
XBR-52HX905
|
Turns on, works for 1 hour and turns off | Improve heat dissipation in t-con | Remove the shield and place heatsinks on the t-con board chips. | EletronicaJambeiro |
| PANASONIC |
TC-40D400B
|
It turns on and off, it turns on whenever it wants or after a while it turns off on its own. | Oxidation on the function and command keyboard. | Replace the keyboard for a new one or all the touch keys for new ones. Note: TV won't turn on without the keyboard! | Maike Sorriso-MT |
| PHILCO |
PTV49F68DSWN
|
Connect to the network, turn on stanby, press power, the TV turns on but no image, the backlight does not turn on, tsound is no time to measure the backlight voltage at the power supply. | When disconnecting the wire that goes to the "adj" position of the power supply (pin that comes from the main board) and shorting this adj to the "pson" the TV releases the backlight but still no image. | This model is the same as Sony TVs, when tsound is a short in the tcon and/or display, the processor blocks operation and acts as protection. the defect was in the tcon, those 10μF smd capacitors in position c427/428/429 | MIGUELTV |
| PHILIPS |
29PT4046/78
|
Shaking the image, heating horizontal output and turning off | Capacitor 2455 ... 47/25v | Replace the same | JRN eletrônica Alagoinhas Ba |
| SONY |
MHC-GT5D
|
Protect 03 | Capacitor position 2082 shorted | Make the replace | Fofão estância |
| JVC VICTOR |
S8000U
HR-S8000U |
Dead power supply | Photo coupler of the switching power supply PHC1 (PC817) and fuse CP3 in the linear supply (ICP-F20) 0.8A x 50V fuse, | I didn't find the fuse on the market, so I replaced it with a 1r resistor | Trendset |
| DAEWOO |
DWLED-39FHD 40-MS1306-MAB2LG
MSD306D |
Sound is choppy or no sound | Components of the mute stage. lift the capacitor c602 = 1uf. If the audio does not recover, replace the transistor q602 = bt3904 and q601 = bt3906. | Pablo | |
| PHILIPS |
FWM9000X/78
|
No audio | This device arrived at my workshop with the following defect, it turns on normally, tsound is no audio on all outputs, I tested the 5 tda8954th, the resistors and pre-amplifiers are all ok, measure the voltages -39v +39v ok, measure the voltage on pin 6- a+12v is giving 1.2v, this feeds 74hct04d and ci tda8954th and d4558, I followed the trail of this pin 6 on the main board on the side of the device I found a smd mosfet m602-3401a and the same as the bad 3401a, I changed it, solved the audio normalized | Defect resolved | Andre |
| SAMSUNG |
CL_2958ZMG
|
Burned horizontal exit | Very high power supply voltage | Francisco Lira Araujo | |
| AOC |
LC42H053
|
TV dead, nothing turned on | Replacing cap 330x16v position c950 | Lucas | |
| PANASONIC |
TC-42AS610B
KM26 |
When turned on, the screen flashes 3x, the green LED also flashes and then returns to stand by. | 3 defective LEDs. | Replacing the LEDs. I took the opportunity to lower the LED current. measurements on the ld2 connector pins 1 and 3: 55.5v, 328ma. pins 5 and 7: 84v, 327ma. I removed resistors r51, r52, r26 and r29 (all 12r). remained: ld2 connector pins 1 and 3: 52.6v, 212ma. pins 5 and 7: 79.2v, 211ma. | Eletrônica R-Tec |
| CCE |
HPS 14BS
|
Vertical closed when turned on, then protection enters | After checking the vertical output, I diagnosed the 9v regulation with a problem | I found res. r 823 10k open, connected to pin 4 of reg. ic 805 | Imagem |