My charging system is not working,when i opened the laptop i found out that one of the ic's closer to the battery terminal has burnt as a result my charger is rather discharging my battery's power.Is there any connection that i can on the board to charge my battery without that burnt ic? Please help me.

take out the power cord see if it will on battery. if it don't pull the battery see if will run power cord only. see if works either way. see if battery charge light works when plug into power.

System recognizes the battery is by the battery's ID resistor, IC internal device name, and if system PIN access to system ground.
So this issue maybe caused by 2 possibilities: 1.If you have installed some software will affect the system BIOS, resulting in-abnormal communications between systems and batteries, so the battery can not be recognized. (If you can find a same battery is all good, try to check that if system BIOS is in-abnormal.) 2.You haven't use the battery for a long time and pack-self discharge (self-discharge) led to Gauge IC (chip) shut down, So the battery can not communicate with the system led system does not recognize it. If your Lenovo S10 battery is a 3 series one in P +, P, you can use 12600mV, 200mA to get the current through, touch click on is OK. This is nothing with your Lenovo power adapter.

Check the voltage on the terminal of the phone to give you a reading closer to 4.5 volts, If there is no voltage then the mother board of the phone's charging section has some problem, provided your adapter is working fine. If there is voltage on the terminals then clean the battery and check voltage, re-insert to the phone and allow the battery to charge. If there is no charge accumulating then the battery is defective and must be replace.

Your charging IC is damaged, all you need do is get your system to an expert who will get it fix. it is not a user serviceable issue. good luck

ALTERNATOR PRECAUTIONS

To prevent damage to the alternator and regulator, the following precautionary measures must be taken when working with the electrical system.

1. NEVER reverse the battery connections. Always check the battery polarity visually. This is to be done before any connections are made to ensure that all of the connections correspond to the battery ground polarity of the car.
2. Booster batteries must be connected properly. Make sure the positive cable of the booster battery is connected to the positive terminal of the battery which is getting the boost.
3. Disconnect the battery cables before using a fast charger; the charger has a tendency to force current through the diodes in the opposite direction for which they were designed.
4. NEVER use a fast charger as a booster for starting the car.
5. NEVER disconnect the voltage regulator while the engine is running, unless as noted for testing purposes.
6. Do NOT ground the alternator output terminal.
7. Do NOT operate the alternator on an open circuit with the field energized.
8. Do NOT attempt to polarize the alternator.
9. Disconnect the battery cables and remove the alternator before using an electric arc welder on the car.
10. Protect the alternator from excessive moisture. If the engine is to be steam cleaned, cover or remove the alternator.

TESTINGThere are several checks that can be done with inexpensive equipment. The first thing to do is to see if the discharge warning light on the dashboard lights when the ignition switch is turned on. If it is not lit, check for blown fuses, a blown out bulb itself (The system will not charge with a bad bulb) or bad connections.
If the warning light does light with the ignition switch on, but stays on with the engine running, check for a loose (or missing) belt, a loose or faulty battery cable, corrosion, a blown fuse or fusible link or a shorted or open wire.

If everything seems to be good (including the battery), but the charge light is always on, then the alternator itself probably is to blame. This does not mean the whole alternator needs to be replaced. Many times, the IC regulator can become faulty and cause the no-charge condition. There is a way to determine whether just the IC regulator or the whole alternator should be replaced.

The alternator can be "full-fielded;" that is, the F terminal can be shorted to ground, making the alternator think there is a heavy load on the electrical system. If the alternator starts putting out when the F terminal is shorted to ground, then the IC regulator is probably faulty. If the alternator still does not put out when the F terminal is grounded, then the whole alternator should probably be replaced. It can be concluded that the alternator is "putting out" by observing the voltage of the battery. The system is charging when the battery voltage is approximately 14-15 volts. If it is only 12-12.5 volts, something is wrong. If the charging voltage is too high (more than 15 volts, the battery smells like sulfur or frequently runs out of water or the bulbs in the vehicle burn out too frequently, then the IC regulator is probably faulty (See Regulator).

Check the alternator and IC regulator by performing the following:

1. Ground the F terminal on the alternator.
2. Start the engine.
3. Analyze the voltage, using the information above.
   

Fig. 1 Checking the alternator and IC regulator 2S-E, 3S-FE and 3S-GE engines shown



Fig. 2 Checking the alternator and IC regulator 4A-FE, 5S-FE and 3S-GTE engines shown




Hope this help (remember rated this).

disconnect battery terminal and check charging voltage it should be 13.8volt per 12v if not present then check transformer, diodes, ic 317if faulty replace it

It maybe as a result of the battery it uses, Have your tried to change the battery? the problem maybe as a result of this, change the battery first and see whether it will be on, if the problem is not from the battery, it means the problem is from your POWER IC, which may have be burnt or damage, replacing the power ic after confirming the problem is the power ic will make it work.

h18000.www1.hp.com/products/...div/12614_div.HTML

Yes. It maybe the battery is the first reason. Try to use other batt.if it still doesn't show charging then be sure you are using funcitonal charger or be sure that the charging terminal is functinal clean the charging terminal with brush if dirty. It still doesn't work with all mentioned then its time to open phone and reheat the Power IC.maybe the connection inside is loosing. or if doesn't work still then the Power IC or the charging IC is need to be replace,but you need to ask mobile phone technicians about these matter because it needs expertice.let them do the job for you.

This unit had a RED CHARGE error. Replaced PQ38 solved the problem.

If you get an error on the charge circuit after replacing the PQ38 you should also replace PQ38 because it too may be blown. Make sure Pin 1 where the dots. Also check the MOSFET on the other side of the COIL too.