hp 4540s not power on and the charger led is blinking white when i check the charging circuite i found 1.4 v on the pl4001 coil the charging ic number is bq24726 i replaced it with the same nomber but the same issue
-
Hi everyone.
First, let me preface by saying that I do not have much experience with diagnosing damages in motherboards other than visual inspection and checking simple short to ground faults.
But I do learn quickly, and really want to learn how to properly diagnose motherboard faults. If someone could have the patience to go over this board with me, it would be greatly appreciated.
A customer came into my shop with a A2179 MacBook with an 820-01958-A logic board. The reason for bringing the laptop in is that the laptop stopped turning on.
First thing...02-15-2024, 05:30 PM -
The charging indicator light on my ASUS X54H laptop is always on even when the charger is disconnected.
Windows also shows ''Plugged in'' when charger is not connected.
This problem started year ago gradually, when unplugging the charger the charging light took several seconds to disappear, then minutes, and now almost always on even when unplugged for an entire day.
Strangely, before sometimes immediately when plugging in the charger the charging light went away, and later came back with it connected.
If I let battery run out and say it has 3% Windows will... -
Board DAOP5HMB8F REV F
Model OPSH
No bios battery on board
Power at cord 19.7, swapped cord 19.7V just to test, tested lid switch good
Plugged in, battery in, charging port light on solid white, press power button, no fan spin, charging connector
and power on light both blink white, not in sync, battery voltage 12.2 jumps to 13.0 for a second and then back and repeats.
Not plugged in, battery in, press power button, no fan spin, power on only blinks white until battery removed, battery 12.7 - 12.1 for a second and then back and repeats.... -
I have two laptop hp15- cs1000tx with motherboard part no DAG7BDMB8F0 REV F
First one was not powering on when battery is connected the first n channel MOSFET was short and after changing the laptop started on power and battery and charging fine
Second laptop has water damaged on ram ic after cleaning and changing the ic the laptop is working fine now
But now I have power led continuously blinking 5 times in both the laptop even after shutdown and when it is powered on the led keeps blinking 5 times .both the laptop is charging and working on both battery... -
Hello, on Sharp LC-40LE830E is everything OK. Working great. If I put the 230 V off and on again, it just blinking white standby LED. I can power on only via VOL- and CH+ and POWER button on TV. After that, I can power off and power on again without problem (by buttons or remote control) until the 230 V is connected. If i put the plug off and on again, just white standby LED blinking. TV needs three button starting again.. On the first look, the backlight looks great, no darker or lighter spots. Any idea what is wrong?07-21-2023, 09:05 AM