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Thread ID: 135211	2013-10-08 09:12:00	Help fixing laptop power adapter	Timbo (11006)	Press F1

Post ID	Timestamp	Content	User
1355449	2013-10-08 09:12:00	I'm trying to make a working adapter by combining two broken ones. Adapter 1 stopped working, it only reads .5v, but I assume plug is ok. Adapter 2 worked, but power would cut out if the plug wasn't plugged into the laptop the "right way". So I thought I can get a working adapter by soldering the plug from adapter 1 to adapter 2. But, I got my multimeter to test the polarity on adapter　２, but it reads 0 voltage. But it does give a polarity reading. Any idea why this is? Dead fuze? fixable? Ｉalso tested adapter 1 with the plug cut off (bare wires), It gives the same .5V, so I guess that confirms the plug is not broken on adapter 1. Ａｎｙ　ｉｄｅａ　ｗｈａｔｓ　ｇｏｉｎｇ　ｏｎ？　Ｃａｎ　still salvage?	Timbo (11006)
1355450	2013-10-08 18:37:00	What do you mean by "the right way" in your post ? What type of plugs are these and are they identical? Chop the plug off adaptor 2, cut the wires back a few inches, seperate them, then check for output and polarity. If you have the required Voltage value, connect to the remaining wires on plug 1 observing polarity.	blanco (11336)
1355451	2013-10-08 21:10:00	The right way, meaning, if the plug was disturbed, the power would go out (faulty plug). It had to be plug in, plus angled at it's sweet spot for it to work. Plugs are identical, for same laptop, but adapters are different brands. I did chop off the plug and test for output and polarity. The problem is there is no output.　Ｗｈｅｎ　ｏｎｌｙ　ｔｈｅ　ｐｌｕｇ　ｉｓ　ｓｕｐｐｏｓｅ　ｔｏ　ｂｅ　ｂｒｏｋｅｎ ．　Ｓｏｒｒｙ，　I　ｄｏｎ＇ｔ　ｋｎｏｗ　ｗｈｙ　ｔｈｅ　ｆｏｎｔ　ｈａｓ　ｃｈａｎｇｅｄ　ｔｏ　 ｔｈｉｓ，　ｎｏｔ　ｍｙ　ｃｏｍｐｕｔｅｒ．Ｎｏｗ　Ｉ＇ｍ　ｗｏｎｄｅｒｉｎｇ　ｉｆ　ｔｈｅ　ａｄａ ｐｔｅｒ　ｈａｓ　ａ　ｉｎｔｅｒｎａｌ　ｆｕｚｅ　ｔｈａｔ　ｈａｓ　ｂｌｏｗ　ａｎｄ　ｉｆ　ｉｔ　ｃ ａｎ　ｂｅ　ｆｉｘｅｄ．	Timbo (11006)
1355452	2013-10-08 22:13:00	Are you saying that measuring across the cable cut back from both adaptor plugs is showing no Voltage ? If this is so, I suggest you purchase another with the same output which should be shown somewhere on the original adaptor casing. Hopefully, the input socket on the laptop has not been damaged by lateral movement.	blanco (11336)
1355453	2013-10-08 23:29:00	You didn't specify the AC or DC output voltage marked on either of your adapters, and there is a remote possibility that both adapters are AC output only. I'd be very surprised if it was AC, but all the same, you need to provide more information if you want accurate advice. It is most unusual that both would read low voltage out because adaptors are usually very durable, so maybe your meter is on the fritz as well. I'd check it with a torch battery (or anything else you have that provides a DC power source like a car battery) just to be sure that the meter is reading ok. It may just be that the socket on your computer is buggered. The electricians' safety meter-check mantra 'prove-test-prove' saves lives and can also minimise diagnostic errors. Cheers Billy 8-{) Edit: A DC meter can provide a low reading on an ac source if there is any distortion of the sine wave. What you see in that instance is the [low voltage] difference in mean voltage output for positive and negative cycles.	Billy T (70)
1355454	2013-10-09 06:31:00	Odds are the plug was fine, but there's a bad spot in the cable (the central core probably) which is giving bad continuity, and is sensitive to the position it is in.. I'd cut the cable back another 5cm and chances are good that things will then work as expected. Making good contact with metres can be pretty hit and miss at times. If it helps, get someone else to fiddle with the cable while you hold the metre cables in place. If you're unlucky the bad bit is at the adapter end of the cable. Look for any areas that show signs of repeated sharp flexing of the cable.	Paul.Cov (425)
1355455	2013-10-09 09:13:00	Just buy a new plug from Jaycar or something. Don't try to re-use some old dodgy one. If the 'good' adapter has screws, even better, open it up and replace the cord and plug.	Agent_24 (57)
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