LG Region-free Blu-ray DVD player LG BP155– how to troubleshoot – no booting
– network connection error – video error
and more
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC153 (No 3.3 VA). Replace IC153 on main board.
How to troubleshoot (Countermeasure)
1) Please check 5.1 VA of IC153 pin1 (V in).
2) If 5.1 VA is abnormal, refer to the solution 2-1 at the previous page.
3) If 5.1 VA is OK, but 3.3 VA is abnormal at the IC153 pin5 (V out), replace IC153.
1) Please check 5.1 VA of IC153 pin1 (V in).
2) If 5.1 VA is abnormal, refer to the solution 2-1 at the previous page.
3) If 5.1 VA is OK, but 3.3 VA is abnormal at the IC153 pin5 (V out), replace IC153.
NO BOOTING WHEN YOU TURN THE UNIT ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
C151 (No 3.3 V).
Replace IC151 on main board.
How to troubleshoot (Countermeasure)
1) Please check 3.3 V of IC153 on main board.
2) If 3.3 V voltage doesn’t come out, check IC151 pin2 (5.1VA).
If there is no 5.1 VA, back to the solution 2.
3) If 5.1 VA input is normal, first of all check the PWR_CTL is high (Q501 pin2).
If PWR_CTL is high, check R172, L153, C179, C183, R173, R174, R175, R176
and if there’s no defective component then replace IC151.
4) After changing it, if the set is still not booting:
- Refer to the next page for checking another power source. (1.2 V, 1.5 V)
- Check Crystal X501.
- Check NAND flash IC (IC602).
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
NO BOOTING WHEN YOU TURN THE UNIT ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC152 (No 1.5 V).
Replace IC152 on main board.
How to troubleshoot (Countermeasure)
1) Check 1.5 V of IC152 pin4.
2) If 1.5 V doesn’t come out, check IC152 pin3 (3.3 V). If there is no 3.3 V, refer to previous page.
3) If IC152 pin3 have 3.3 V, replace IC152.
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC150 (No 1.2 V).
Replace IC150 on main board.
How to troubleshoot (Countermeasure)
1) Please check 1.2 V of IC150 pin11/ pin12.
2) If 1.2 V voltage doesn’t come out, check IC150 pin13 (12 VA). If there is no 12 VA, go to previous solution to check it.
3) If 12 VA is OK, check the PWR_CTL is high and if it’s high check C167, L151, R166, R167, R168, C170, C171, C172, C173 and if there’s no defective component, please replace IC150.
4) After changing it, if the set is still not booting:
- Check 1.2 V/ 3.3 V/ 3.3 VA is normal.
- Check Crystal X501.
- Check NAND flash IC (IC602)
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC150 (No 1.2 V).
Replace IC150 on main board.
How to troubleshoot (Countermeasure)
1) Please check 1.2 V of IC150 pin11/ pin12.
2) If 1.2 V voltage doesn’t come out, check IC150 pin13 (12 VA). If there is no 12 VA, go to previous solution to check it.
3) If 12 VA is OK, check the PWR_CTL is high and if it’s high check C167, L151, R166, R167, R168, C170, C171, C172, C173 and if there’s no defective component, please replace IC150.
4) After changing it, if the set is still not booting:
- Check 1.2 V/ 3.3 V/ 3.3 VA is normal.
- Check Crystal X501.
- Check NAND flash IC (IC602)
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor,
and it will not boot-up.
3-5. X501
3-5-1. Solution
Replace X501 on main board.
3-5-2. How to troubleshoot (Countermeasure)
1) Please check the soldering status of 27 MHz crystal (X501).
2) Please check the frequency of 27 MHz crystal (X501).
3) If the crystal doesn’t oscillate, replace X501.
4) After changing it, if the set is still not booting:
- Check NAND flash IC (IC602)
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor,
and it will not boot-up.
3-5. X501
3-5-1. Solution
Replace X501 on main board.
3-5-2. How to troubleshoot (Countermeasure)
1) Please check the soldering status of 27 MHz crystal (X501).
2) Please check the frequency of 27 MHz crystal (X501).
3) If the crystal doesn’t oscillate, replace X501.
4) After changing it, if the set is still not booting:
- Check NAND flash IC (IC602)
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
(NAND FLASH MEMORY). Replace IC602 on main board.
How to troubleshoot (Countermeasure)
1) Please check physical status of IC602 on your eyes.
2) Check the Vcc (3.3 V) of IC602 and if it’s normal please replace IC602. (Please make sure IC602 has proper program.)
3) After changing it, if the set is still not booting:
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
(NAND FLASH MEMORY). Replace IC602 on main board.
How to troubleshoot (Countermeasure)
1) Please check physical status of IC602 on your eyes.
2) Check the Vcc (3.3 V) of IC602 and if it’s normal please replace IC602. (Please make sure IC602 has proper program.)
3) After changing it, if the set is still not booting:
- Check DDR IC (IC601)
- Check MPEG IC (IC501)
NO BOOTING WHEN YOU TURN THE UNIT ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC601 (DDR3 MEMORY). Replace IC601 on main board.
How to troubleshoot (Countermeasure)
1) Please check 0.75 V of DDR3_VREF (C606, R607). Check 1.5 V of C613.
2) If it doesn’t work even though IC150, IC151, IC152, IC153 are no problem, IC601 (DDR memory) could have problem.
3) After changing it, if the set is still not booting:
- Check MPEG IC (IC501)
- Check main board.
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC501 (MPEG IC). Replace IC501 on main board.
How to troubleshoot (Countermeasure)
1) Please check 1.2 V of C505, C506, and C507 on main board.
Please check 3.3 V of C517 and C518 on main board.
Please check 1.5 V of C515 and C516 on main board.
2) If it doesn’t work even though IC150, IC151 are no problem, IC501 MPEG IC could have problem.
3) After changing it, if the set is still no booting, check main board.
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
IC501 (MPEG IC). Replace IC501 on main board.
How to troubleshoot (Countermeasure)
1) Please check 1.2 V of C505, C506, and C507 on main board.
Please check 3.3 V of C517 and C518 on main board.
Please check 1.5 V of C515 and C516 on main board.
2) If it doesn’t work even though IC150, IC151 are no problem, IC501 MPEG IC could have problem.
3) After changing it, if the set is still no booting, check main board.
NO BOOTING WHEN YOU TURN THE UNIT
ON
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
Main board. Replace main board.
How to troubleshoot (Countermeasure)
1) Please remove IC501 and IC601.
And then check the impedance between each signal (DATA, ADDRESS and so on).
2) If there is some impedance (a few ohm or infinite ohm) especially power source trace,
PCB via might be broken. You’d better change main board.
When you turn on your set, it will blank/ no displaying Main Menu on Television/ Monitor, and it will not boot-up.
Main board. Replace main board.
How to troubleshoot (Countermeasure)
1) Please remove IC501 and IC601.
And then check the impedance between each signal (DATA, ADDRESS and so on).
2) If there is some impedance (a few ohm or infinite ohm) especially power source trace,
PCB via might be broken. You’d better change main board.
BAD HDMI VIDEO / AUDIO OUTPUT
When unit is connected to HDMI TV using HDMI cable, picture shows bad color, no output or mixed color on the screen. But component output is OK.
JK802 (HDMI Jack). Replace JK802 (HDMI Jack).
How to troubleshoot (Countermeasure)
1) Check JK802 pin soldering.
2) If there is short soldering on pin JK802, re-soldering pin JK802.
3) If problem still occurs, check HDMI data:
- If all data OK, replace JK802.
- If data NG, check set on BD Mode: Replace IC501.
When unit is connected to HDMI TV using HDMI cable, picture shows bad color, no output or mixed color on the screen. But component output is OK.
JK802 (HDMI Jack). Replace JK802 (HDMI Jack).
How to troubleshoot (Countermeasure)
1) Check JK802 pin soldering.
2) If there is short soldering on pin JK802, re-soldering pin JK802.
3) If problem still occurs, check HDMI data:
- If all data OK, replace JK802.
- If data NG, check set on BD Mode: Replace IC501.
WIRED NETWORK CONNECTION ERROR - (OPTION PART)
When you connect online service (like Youtube or Netflix2.1) through the wired LAN, the “no connection” message appears.
JK803 (Ethernet Jack). Replace JK803 (Ethernet Jack) on main board.
How to troubleshoot (Countermeasure)
1) Check you internet connection. Make sure it connect properly to modem or router.
2) If internet connection OK, please check the Ethernet Jack (JK803).
3) If there is soldering problem, please re-soldering pin JK803.
4) If after re-soldering problem still occurs, replace JK803.
5) If problem still occurs after change JK803, check MPEG IC (IC501).
WIRELESS NETWORK CONNECTION ERROR
- (OPTION PART)
When you connect online service (like Youtube or Netflix2.1) through the Wi-Fi, the “no connection” message appears.
Wi-Fi Module.Replace Wi-Fi module.
How to troubleshoot (Countermeasure)
1) Check you internet connection. Make sure it connect properly to modem or router.
2) If internet connection OK, please check the CN803.
3) If there is soldering problem, please re-soldering pin CN803.
4) If after re-soldering problem still occurs, Please check CN803 pin5 (Wi-Fi 5V)
5) If there is no 5 V, please check IC191 pin6 (5 V)
6) If IC191 pin abnormal, check C191, C192, C193, R192
and there is no defective component, replace IC191.
7) After changing it, if the set is still no connection, replace Wi-Fi module.
8) If problem still occurs after change it, check MPEG IC (IC501).
When you connect online service (like Youtube or Netflix2.1) through the Wi-Fi, the “no connection” message appears.
Wi-Fi Module.Replace Wi-Fi module.
How to troubleshoot (Countermeasure)
1) Check you internet connection. Make sure it connect properly to modem or router.
2) If internet connection OK, please check the CN803.
3) If there is soldering problem, please re-soldering pin CN803.
4) If after re-soldering problem still occurs, Please check CN803 pin5 (Wi-Fi 5V)
5) If there is no 5 V, please check IC191 pin6 (5 V)
6) If IC191 pin abnormal, check C191, C192, C193, R192
and there is no defective component, replace IC191.
7) After changing it, if the set is still no connection, replace Wi-Fi module.
8) If problem still occurs after change it, check MPEG IC (IC501).
