Question about Compaq Presario 2190US Notebook

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I am unable to charge my battery

Do you have the wiring schematic of the battery connections and any ideas on what may be causing my Presario to not charge? It work fine off the 120V adapter. Thanks. Bruce Lind

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Re: I am unable to charge my battery

I looks like the laptop can only work on 120V power supply. So only use 120V adaptor.

Posted on Dec 12, 2007

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The most common reasons for power issues are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement. If a power jack problem, it should be addressed by someone knowledgeable.

If no change, the power adapter is probably faulty and needs replacement.

Hope this helps.

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U may have a dead board. They average $285 plus labor. A shop should be able to test it on a volt meter see if the power grid is burnt for around $35. then u will know what ur in for. If its a bad board just replace the laptop I wouldnt repair that problem on an older laptop.

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You can get an exact adapter from eBay link below, they are quite cheap. Sometimes the break is close to the end of the plug, and sometimes, the actual solder on the socket inside the unit is fractured, causing intermittent connections. Often we are able to use the old cord Plug, and graft on the new power Lead. However it is wired and regardless of how many wires are inside, the is only One - Negative, the OUTER contact. The INNER Contact is Always + Positive, sometimes there are three wire inside, TWO are Plus, and ONE, the shield, is negative.

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I have a Presario F730US laptop and my battery wont charge?

Try this,
Remove battery and ac ADAPTER from the laptop
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Connect the battery back to laptop
turn on your computer,
Login to windows
check the battey backup
Connect the Adapter back and check the the battery life

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You can experience a proble on jack connector... need to renew molding connection to PCB, but you must have this skill.
You need to contact a specialized tech.

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1 Answer

Compaq Presario 1000x charges when off, but not when on

Try a different battery cause your existing one may have bad cells and could be messing with things. Try one that you know that works. If that fails, try another AC Adapter and see if that changes things.

If neither one fixes the problem. It could be a problem at that point with the dc jack. The solder points probably need to be resoldered cause the connection isn't good.

Could also be a problem with the motherboard with the voltage regulator but try my other suggestions first to rule things out.

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$150/$200 to get repaired.
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FirewallAvat: Your problem is likely because your battery is dead and the adapter isn't charging it. This may be due to broken connections in the cable from the adapter. Flexing often causes the wire inside to break near the plug. Generic replacement adapters are available, or the wire can be cut back a bit and a suitable replacement soldered on. The cause might also be broken solder connections on the main board at the power jack, This is common from stress due to the power plug flexing. It is usually possible to open the computer and resolder these connections, although sometimes there's too much damage from arcing before the connection fails entirely.

DocBrown: Does the power LED on your computer come on when you connect the adapter? If not, try the adapter in another outlet anyway. Sometimes one outlet in a strip can go bad. Check the output of the adapter with a voltmeter. If it's bad, replace it or try repairing it as noted above. If the adapter is good but the light isn't on, you might have the bad power jack as well.

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get the whole laptop checked by the service center
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