Laptop Charger - Electronic Circuits Projects Diagrams Free

Cry_Wolf · 14th November 2007, 05:10 PM

i am having a toshiba satellite laptop. Its charger has stoped working its 19V and 4.74A. I have opened it every thing looks fine. i have checked its giving 19.01 Volts when not connected to the laptop and about 17.5 Volts when connected to the charger. The laptop is ok cauz i have checked it with other charger. What could be the problem ????

iONic · 14th November 2007, 07:46 PM

The Device is the Power source AND charger for the laptop. Does your laptop work on the batteries alone?

What are the symptoms you are having then? What's not working? Maybe it's the batteries that are not working?

The output of the power supply reads 19.01V... have you mesed with the line near the plug that connects to the computer. This is really a soft spot for laptop supplies, as well as near the inline filter.

It's also possible that the femail connector from the computer is an issue.

Cry_Wolf · 16th November 2007, 02:41 PM

Yes It is working on the battries. I have charged my laptop with other charger its working fine. There is absolutly no prob with da laptop...

I have checked its soft point also its also ok.

now what ???

Super_voip · 16th November 2007, 04:59 PM

if the charger is only putting out 17V then you need a new one, sorry.

Cry_Wolf · 16th November 2007, 11:06 PM

thts not the problem buddy. actually i waant to get to the problem. can u help?? if any one cud help me finding out the problem in it i would be grate full

iONic · 17th November 2007, 04:45 AM

1) What is the voltage, open circuit and hooked up to your laptop for the charger that works?

2) What is it's current rating?

For example the charger that does not work is 19.1V open circuit and 17.5V when connected, it;s current rating is 4.74A.

3) When you charge the batteries with the other charger, does the computer tel you that it is 100% charged?

4) How long can you run the computer on the battery pack before you need to charge it?

5) When you use the "bad" charger, does the computer turn on at all?

6) When you use the "bad" charger with the battery pack removed, does the computer turn on at all?

wmmullaney · 18th November 2007, 01:56 AM

Try removing the batterys.

Gordz · 18th November 2007, 11:18 AM

Some laptop power packs are designed to give say, 19v on idle and will drop by as much as 30-50% when the charge circuitry kicks in. Toshiba and Mitac are two such brands that use this technique on some of their kit. Measure the drop on the 'good' charger with the same battery set and compare.

Cry_Wolf · 18th November 2007, 08:47 PM

ok buddies thnx for ur help but some body just got problem with this thread

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14th November 2007, 05:10 PM	(permalink)
Cry_Wolf	Laptop Charger i am having a toshiba satellite laptop. Its charger has stoped working its 19V and 4.74A. I have opened it every thing looks fine. i have checked its giving 19.01 Volts when not connected to the laptop and about 17.5 Volts when connected to the charger. The laptop is ok cauz i have checked it with other charger. What could be the problem ???? __________________ Khizer Naeem Mughal IIUI

14th November 2007, 07:46 PM	(permalink)
iONic	The Device is the Power source AND charger for the laptop. Does your laptop work on the batteries alone? What are the symptoms you are having then? What's not working? Maybe it's the batteries that are not working? The output of the power supply reads 19.01V... have you mesed with the line near the plug that connects to the computer. This is really a soft spot for laptop supplies, as well as near the inline filter. It's also possible that the femail connector from the computer is an issue. Last edited by iONic; 14th November 2007 at 08:15 PM.

16th November 2007, 02:41 PM	(permalink)
Cry_Wolf	Yes It is working on the battries. I have charged my laptop with other charger its working fine. There is absolutly no prob with da laptop... I have checked its soft point also its also ok. now what ??? __________________ Khizer Naeem Mughal IIUI

16th November 2007, 04:59 PM	(permalink)
Super_voip	if the charger is only putting out 17V then you need a new one, sorry.

16th November 2007, 11:06 PM	(permalink)
Cry_Wolf	thts not the problem buddy. actually i waant to get to the problem. can u help?? if any one cud help me finding out the problem in it i would be grate full

17th November 2007, 04:45 AM	(permalink)
iONic	1) What is the voltage, open circuit and hooked up to your laptop for the charger that works? 2) What is it's current rating? For example the charger that does not work is 19.1V open circuit and 17.5V when connected, it;s current rating is 4.74A. 3) When you charge the batteries with the other charger, does the computer tel you that it is 100% charged? 4) How long can you run the computer on the battery pack before you need to charge it? 5) When you use the "bad" charger, does the computer turn on at all? 6) When you use the "bad" charger with the battery pack removed, does the computer turn on at all? Last edited by iONic; 18th November 2007 at 03:26 PM.

18th November 2007, 01:56 AM	(permalink)
wmmullaney	Try removing the batterys.

18th November 2007, 11:18 AM	(permalink)
Gordz	Some laptop power packs are designed to give say, 19v on idle and will drop by as much as 30-50% when the charge circuitry kicks in. Toshiba and Mitac are two such brands that use this technique on some of their kit. Measure the drop on the 'good' charger with the same battery set and compare.

18th November 2007, 08:47 PM	(permalink)
Cry_Wolf	ok buddies thnx for ur help but some body just got problem with this thread __________________ Khizer Naeem Mughal IIUI