QUICK SERVICE TIPS GUIDE LCD AND PLASMA TV REPAIR

LCD and plasma TV repair
LCD TV Board Samsung UE40D5000PW
When turned on, the LED starts flashing. There is no generation on the FA5591. Check QS801 for replacement (leak).

Philips 40PFL3107H / 60 S TPM9.2E LA
There is sound and image, but no backlight. Check the LM358 chip on the inverter board. When one of the LEDs burns out, you can replace it with a jumper by disconnecting one of the shunt resistors in the driver. You can reduce the backlight current from 400 to 300 mA by soldering R059 10 Ohms.

LCD LG 32LB561U
No image. Check matrix cables.

Liberton LCD 3213ABUV
Stripes, image freezes. Defective matrix.

Samsung PS51D490A1W
Artifacts in the image (spots, blurred). Defective matrix.

LCD Toshiba 40LV833RB
It does not turn on, the red LED lights up, does not respond to buttons. Check U4 - U5 AX3513, IC301 FSFR1800.

Toshiba 20JL7R
There is no backlight, half of U2 4606 is broken, two fuses have blown. The assembly can be replaced with IRF7319. Possible leakage in other assemblies.

LG 32PC52
Sound without image. Check C202, C207, R531 6.2K.

PHILIPS 47PFL7403
No sound in the speakers. There is sound in the headphones and on the audio output. Replace the AD8197 HDMI Switch.

AKAI LTA-32N576hcp
The 22 ohm resistor R102 burns out in the power supply. By replacing the diode D5 and capacitor C39.

SAMSUNG PS43E450A1W
Negative image with spots. Check R4087 and R4063 (6.3 Ohm) in the TLP155 power supply.

Panasonic TX-LR32C10
When turned on, after flashing the green LED, red flashes. Breakdown on the body in the backlight at the junction of the plastic plates.

Philips 32PFL5406H / 60
Negative image, gamma correction does not work. Check tracks if water gets into the unit.

SHIVAKI STV-22LEDG7
No sound. Check for leaks of C232. If U2 burns out, then this is SY8132

Samsung UE37D6100SW
It does not turn on after a power surge. Breakdown on the IC601 power line - HDMI port of the Silicon Image SiI9489CTUC processor. You can remove the processor, it will work without HDMI.

LG 32LW5700 JA
A screen saver appears, the LED flashes 4 times, the brightness of the backlight decreases. The processor falls off - warm up.

LG 42PN450D
It does not turn on. Check for a breakdown of Q703, Q704, Q707, Q708 and Q709. Check drivers for breakdown.

Toshiba 26WL66R
Color distortion in the image. Check for a breakdown of Q302.

Supra STV-LC24410FL
In standby mode does not respond to buttons. The processor is defective.

Rolsen RL-26D50D
The LED is on, the TV does not turn on. Check stabilizer Q081.

Sharp LC-37X20E
LEDs blink. Very rarely, but manages to turn it on. Check resistors R7835, R7836, R7837, R7832, R7833, R7834.

Thomson t32c30u
The network indicator lights up, but the TV does not turn on. Heat the hair dryer to 50-60 degrees SPI 25Q32. Check the soldering of the processor.

LG 42LA660V-ZA
There is a backlight, channel switching works, no image. Check for short-circuit ceramic capacitors on the matrix strips. If an image with stripes appears after detecting and replacing such a capacitor, check the resistor for clk2 output near TPS65198 - it should be 100 Ohms.

LG 39LN540V-ZA
After replacing the blown LEDs in the backlight, the brightness of the backlight is very small. Check by replacing Q803 KST2907.

Samsung LE32M87BDX
Pauses in the sound. If the problem disappears after tightening the control to turn on the external power supply to protect it with a 500 Ohm resistor, replace the VLF with an external one.

Samsung PS-42D5S
It does not turn on. Check 5N3011 for Y-MAIN, transistors in PSU and PWM L6598. If the colors are distorted after starting, check the resistor assemblies on the logic board (4 x 47 Ohm). If there are colored stripes, then check the scan chip.

LG 42PA4510
It does not turn on. Standby voltage is normal. Check chip F4216MSF32.

LG 42PQ300R-ZA
Does not work. Check Q23 45E122, Q15 IRFP4332 (can be replaced with AP88N30), Q11-Q12 30G124.

Sharp LC-32GA8RU
Horizontal stripes on the screen. Check quartz 20.250 replacement.

Samsung UE46EH5300W
It does not turn on after a thunderstorm. Check PWM ICM801 FSFR1700, ICM851 TL431, QM801 MMBT2907, CM854 220 nF. If after replacing the FSFR1700 does not turn on, then check the chip for marriage, it often happens.