Re: LG 47LV550W audio and back light works / no picture
I tried VGH when removing both ribbon cables:10,66v
Only one connected: 6,53v
I tried VGH when removing both ribbon cables:10,66v
Only one connected: 6,53v
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Re: LG 47LV550W audio and back light works / no picture
Any comment on these voltages?Comment
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Re: LG 47LV550W audio and back light works / no picture
Just wanted to report that new TCON board solved the problem. Thank you all who helped on the way, specially warm thanks to Budm!Comment
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Re: LG 47LV550W audio and back light works / no picture
Thanks for the repair follow-up, sometime it is hard to be 100% as to the problem is caused by bad T-CON or bad panel, I sometime has to gamble an try the T-CON first if is is cheap enough.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LG 47LV550W audio and back light works / no picture
Yeah my thoughts exactly. I ordered one from eBay for 35$. So for my part I can recommend seller coolyouparts. Quite fast for free delivery (10 days from order) and packaging was great.
So this time I got lucky and got working set for 90 bucks, few hours of troubleshooting and ofcourse your priceless help.
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Hello!
I just got and MacBook Air A1466 EMC 2925 (820-00165-A) but it doesn't chime with not light on keyboard and black screen, just the fan spinning.
I noticed something weird with the fan:
- When the charger is connected, he powers up on his own (one time fan spining for 5 seconds, stops, then solid normal fan spining until I force the shutdown).
- When I try to run the Mac on battery, he is just power cycling (fan spinning for 10-15 seconds and then stop before restarting again and so on).
I already tried to refalshed the BIOS: nothing changed.
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Bought this TV used not working, panel flashed briefly on power up and it was blinking 8 times, a quick look on SS board revealed a common fault on the 3uF 250V capacitors, C201 to C205 (C1620X in the service manual), the solder joints were all cracked, C201 and C205 pins were darkened and some sparking had occurred on them, C201 was split open and clearly overheated in its last hours, replaced that one and resoldered the others, 8 blinks fixed.
Also the previous owner broke the antenna connector by taking the TV out of the wall mount forgetting to unplug it, I desoldered the tuner... -
Hi guys, i have a problem with board 820-00239-A (no liquid damage). In short was U8000. After change still no power on but charging. I try change U7800 but still doesn't work. Here is all result:
3V3_G3H - 3,3V
PPBUS_G3H - 13,05V
PP3V0_G3H - 3,078V
PP3V3_S0 - 0V
PP3V3_G3H - 3,404V
PP3V3_SUS - 3,352V
PP3V3_S5 - 3,354V
SMC_DELAYED_PWRGD - 0V
CPU_VCCST_PWRGD - 0V
SMC_ONOFF_L - 3,4V
RTC_RESET_L - 3V
ALL_SYS_PWRGD - 0V
S5_PWRGD - 3,265V
PLT_RST_L - 0V
PCH_INTRUDER_L - 3,078V
PCH_SRTCRST_L...03-24-2021, 09:55 AM -
Model :Asus X540UBR
M/b: NX540UBR Rev 2.0
Problem: turn on when PSU cable is inserted, consumption 0.106 amp .No display.
Observation:
1. No liquid spill or corrosion observed.
2. 3v/5v alw present.
3. 1.2/+vtt/+2.5v present
4. 1.0VSUS present
Diode mode value :
Pl 8901 = 05.16v
Pl 8701 = 0.354v
Pl 8702 = 0.258v
pl 8600 = 0.358v
Pl 8302 = 0.059v
Pl 8103 = 0.007v
Pl 8102 = 0.007v
Pl 8101 = 0.011v
Pl 9101 = 1.030v
Pl 9100 = 0.030v
So No vcccore , no +nvvdd... -
Hello my friend.
Got this motherboard didn't work completely. HP 15 LA-C701P Discreet one ( AMD )
When in power , theres's a white light in charger indicator which means 3LDO is ok , when pressing button the amp consumer reach 0.280 than 0.170
than off ( I use here a powe supply with 2 number after point ).than off.
take this voltage when pressing power button :
Pl 8/9 = 3/5valw is present
Pl 11 = 1.35v present
Pl 17 = 1.5v present
Pl 802/803 = 0v
Pl 12 = 1.05v present
PL 14 = 1.8V with heating...
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