Hi guys well I just hope someone with some electronics knowledge in repairing notebooks would help me out in here.
I got a sager 5680 lappy, and when I plug the lap on AC power without the battery I turn on the unit and instantly goes off, ( I hear a low sparky noise like some sort of short circuit, when this happens the psu light dimms from rock solid ) .
Now if you leave the unit with the battery charging you may be lucky and the battery will charge and the only way the unit works is with the battery on it's bay, as soon as you remove the battery boom unit shuts off.
The Unit does work but only when you plug in a battery and when it charges if you leave it dunno a couple of nights never gets solid green
What I did :
==================
- Could the PSU be bad not throwing enough amps ? even if it shows voltage
on digital meter
- This lap has a separate voltage daughtercard for the battery I removed it when diagnosing this card goes
plugged onto the mainboard and here the battery gets plugged.
- Measured PSU voltage it's working fine 20volts DC
- Checked SMD fuse on motherboard , fine
- Dissasembled the entire unit ripped everything off that might me faulty
- I've read the AC plug sometimes get's broken and I retouched the solder points, once I did this, by miracle the unit started without the battery plugged on. But guess what after I assembled the unit then again , when on AC power alone turned on , and then went off . So I don't know if the problem is on the AC female plug . What I do know is there's some sort of short circuit somewhere I hear like a sparky noise really low.
This is really getting me crazy cause I do know the lappy works , but it's not working on AC by some reason it's not dead.
I can take some pictures if someone can guide me through it I do have some knowledge about electronics and soldering
I got a sager 5680 lappy, and when I plug the lap on AC power without the battery I turn on the unit and instantly goes off, ( I hear a low sparky noise like some sort of short circuit, when this happens the psu light dimms from rock solid ) .
Now if you leave the unit with the battery charging you may be lucky and the battery will charge and the only way the unit works is with the battery on it's bay, as soon as you remove the battery boom unit shuts off.
The Unit does work but only when you plug in a battery and when it charges if you leave it dunno a couple of nights never gets solid green
What I did :
==================
- Could the PSU be bad not throwing enough amps ? even if it shows voltage
on digital meter
- This lap has a separate voltage daughtercard for the battery I removed it when diagnosing this card goes
plugged onto the mainboard and here the battery gets plugged.
- Measured PSU voltage it's working fine 20volts DC
- Checked SMD fuse on motherboard , fine
- Dissasembled the entire unit ripped everything off that might me faulty
- I've read the AC plug sometimes get's broken and I retouched the solder points, once I did this, by miracle the unit started without the battery plugged on. But guess what after I assembled the unit then again , when on AC power alone turned on , and then went off . So I don't know if the problem is on the AC female plug . What I do know is there's some sort of short circuit somewhere I hear like a sparky noise really low.
This is really getting me crazy cause I do know the lappy works , but it's not working on AC by some reason it's not dead.
I can take some pictures if someone can guide me through it I do have some knowledge about electronics and soldering