This adapter available at eBay:

https://www.ebay.com/itm/Compaq-Computer-AC-A … 5W/333589739143

MAZter wrote on 2020-11-24, 13:59:

This adapter available at eBay:

https://www.ebay.com/itm/Compaq-Computer-AC-A … 5W/333589739143

Hi, thank you. I know I can buy it on ebay, but shipping is crazy 🙁
7USD for the adapter si OK, but 32UDS for the shipping...too much...

So the pinout of the connector could help me..

David

Dave Bursik wrote on 2020-12-01, 10:34:

Hi, thank you. I know I can buy it on ebay, but shipping is crazy :( 7USD for the adapter si OK, but 32UDS for the shipping... […]
Show full quote

MAZter wrote on 2020-11-24, 13:59:

This adapter available at eBay:

https://www.ebay.com/itm/Compaq-Computer-AC-A … 5W/333589739143

Hi, thank you. I know I can buy it on ebay, but shipping is crazy 🙁
7USD for the adapter si OK, but 32UDS for the shipping...too much...

So the pinout of the connector could help me..

David

The pinout of the adapter is on your first pic, on the line reading "Caution: for indoor use only" on the right is the drawing of the connector. It seems to say the right part of the adapter is positive, the left part is negative. To test that, you could open the laptop and see where the pins of the plug go. Negative should go to ground.

aha2940 wrote on 2020-12-01, 15:27:

Dave Bursik wrote on 2020-12-01, 10:34:

Hi, thank you. I know I can buy it on ebay, but shipping is crazy :( 7USD for the adapter si OK, but 32UDS for the shipping... […]
Show full quote

MAZter wrote on 2020-11-24, 13:59:

This adapter available at eBay:

https://www.ebay.com/itm/Compaq-Computer-AC-A … 5W/333589739143

Hi, thank you. I know I can buy it on ebay, but shipping is crazy 🙁
7USD for the adapter si OK, but 32UDS for the shipping...too much...

So the pinout of the connector could help me..

David

The pinout of the adapter is on your first pic, on the line reading "Caution: for indoor use only" on the right is the drawing of the connector. It seems to say the right part of the adapter is positive, the left part is negative. To test that, you could open the laptop and see where the pins of the plug go. Negative should go to ground.

🤦 Thank you 😁

I found this:

https://imgur.com/a/0ftizzH

-------
| 1 3 |
| 2 4 |
\____/

1 - +18,5V (19V will work too)
2 -
3 - Ground
4 -

Betwen 1 and 4 connect 2,2k-ohm resistor.

Dave Bursik wrote on 2021-03-03, 17:00:

I found this: […]
Show full quote

I found this:

https://imgur.com/a/0ftizzH

-------
| 1 3 |
| 2 4 |
\____/

1 - +18,5V (19V will work too)
2 -
3 - Ground
4 -

Betwen 1 and 4 connect 2,2k-ohm resistor.

Did this work? I could never get this to work. I do have the original PSU to compare with and found that there's a voltage on the lower-left pin (plug side) which will allow the laptop to start when power is hooked into the upper pins.
Detailed write-up here: https://forum.vcfed.org/index.php?threads/com … 6/#post-1468252

The voltage can be sourced from a USB-PD trigger board's 3.3v rail and since the voltage can't go up/down like the original charger can, it's best to isolate the battery (+) terminal with kapton tape or remove the battery during use. I use 15 volts because the original PSU outputs 14.1v and the laptop works.

Armada 1500c works like this, view from the back of the connector, i.e., the computer socket::
/--\
I1 2I
I3 4I
-----
1 - red
2 - yellow
3 - thick white +18.5V/4.5A
4 - ground/cable shield
10kΩ resistor between 1 and 4