Dell Inspirion 1705 Battery problem

December 21, 2011 at 06:59:09
Specs: Windows 7, AMD Turion 64
Hi Guys,
A customer has come to me with a problem on a Dell Inspirion 1705 laptop, He states that when the power lead is plugged into the laptop power port it's powering the laptop itself no problem, but there is no charge going to the Battery, My first thought was that the battery was knackered, however the customer has installed a new battery but has the same problem. Am I right in thinking this would therefore be a hardware problem such as a poor connection between the motherboard and battery connectors.

Any assistance would be greatly appreciated.

See More: Dell Inspirion 1705 Battery problem

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December 21, 2011 at 07:42:10
Ask your customer about these things...

Have you, or is it possible someone else who has had physical access the the laptop
- dropped it, or otherwise subjected it to a physical jolt ?
- spilled liquid on it, or exposed it to liquid such as rain, or sprayed it with liquid ?

Has there been a power failure event that happened while the AC adapter was plugged in since it last worked fine on the battery alone ?

Those things are the most frequent reasons something inside the laptop has been damaged or loosened.

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:

Tips about battery charging problems on Dell laptops - may apply to other makes.
See response 3 in this by iTech:

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December 21, 2011 at 13:31:47
Thanks for your response, I've been in touch with my customer and he states the laptop was knocked onto the floor, since then it hasn't charged the battery. It heard somewhere that there is some sort of circuit board connected to the motherboard which distributes power to the laptop and battery when plugged into AC power. If it is found this circuit board that's at fault, are replacement parts available or is it a case of needing a new motherboard altogether.

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December 22, 2011 at 10:30:35
"..he states the laptop was knocked onto the floor, since then it hasn't charged the battery."

That's probably the cause of the problem.

Apparently there is no such model as Dell Inspiron 1705.

However, there is a E1705 sub-model in the Inspiron 9400 series.

Use the Service tag "number" to look up the correct model on the Dell site.

Go here for how to find the Service tag "number":

Tell us what it is.

If it IS the E1705 sub-model in the Inspiron 9400 series....

I have only opened up a few laptops. In at least one of them, an Acer Aspire, it had a small board / card that plugs into the mboard that has USB ports and that the power jack is directly connected to (integral, soldered). Some Dell models have that too.
When I looked up info on the web (as I recall I used it's part number to search with, either Acer's on a label on it, or it was printed on the board) , that board has both power related circuits and USB circuits - replacing that board / card MAY fix a problem related to whether the battery is not charging properly, or the battery is not switching properly to be used when you disconnect the AC adapter, or the USB ports there not working If replacing the small board / card doesn't fix the problem, you must replace the mboard.

(In the case of that Acer Aspire laptop, it was dropped. The built in display never worked after that. It worked fine with an external monitor for months after that, then the keyboard and all the USB ports stopped working, including one other USB port in the main mboard. I opened it up and tried making everything was plugged in properly to no avail. The corner of the mboard is physically damaged, but otherwise there is nothing wrong that can be physically seen. The other had no money to risk to fix it, so I did not try replacing the small board or the mboard. It still boots and charges the battery fine, it still displays on an external monitor, but you can't enter a password to get it to load Windows with no way for a keyboard to work.)

Dell™ Inspiron™ 9400/E1705

I looked at the Service manual.
It appears your model has no such separate small board / card.
There are two possible mboards - one has an integrated video adapter - the other one has a slot that a video card plugs into.

You could try opening up the case and making sure all connectors are seated properly. REMOVE the battery, unplug the AC adapter BEFORE you do that, or fiddle with the ram.

If that doesn't help, the only solution is to replace the mboard.
Search the web for :Inspiron E1705 motherboard


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December 22, 2011 at 13:02:08
Hi, Thank you for your response, I thought i'd updated the model, its a Dell Inspiron 1720, not as originally thought 1705, I'm going to open it up tomorrow and have a look and see if I can see where the problem lies.

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December 23, 2011 at 08:29:00
" its a Dell Inspiron 1720, not as originally thought 1705,"

We can only go by whatever info you provide.
One thing you should try to make sure you get right is the computer's model number !

There IS an Inspiron 1720 model.

Manuals - English

I looked at it's Service manual.

The situation appears to be similar
- there is no separate power source related small board / card
- there are two versions of the mboard - one with onboard video, another one that uses a plug in video card.

Search for: Inspiron 1720 motherboard.

A new mboard is preferable to a used ( a.k.a. "refurbished") mboard, but you're unlikely to find a new one.
Make sure any used ( a.k.a. "refurbished") mboard has no bios Setup set passwords enabled, BEFORE you buy it.

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