HP Pavilion dv5000 Laptop - USB Ports Not Working - Part II 3

[frechetn]

This is a follow up on a similarly title subject.

I too have a HP Pavilion DV5000 Laptop which is running Windows XP.

When any USB device is plugged into either left-side USB port, the devices are not recognized.

When a USB device is plugged into the right-side USB port, some devices have limited functionally. For instance a USB keyboard is detected and allows lower case characters to be typed. When the CAPS-lock is depressed, the USB connection appears to reset itself. Other devices are not detected (ie: USB Mouse, USB Flash Drive, USB Web Cam, etc...). Connecting an externally powered USB hub to the right-side USB port, enables USB devices to work. Not so for the two left-side USB ports.

Now I have taken this a step further and disassembled the laptop down to the main board and media board. A visual inspection of the individual components near the USB ports revealed that the same SOT23-5 (U28 and U1, respectively) components were electrically damaged (burnt) due to excessive current draw from a USB device. Based on how the components are wired into their circuits and a little electronics know-how, the devices appear to be a Analogic Tech Current Limited Load Switch (Part number: AAT4610AIGV-T1 or AAT14610BIGV-T1).

Although I haven't done so yet, I'd like to replace the damaged components to see if this fixes the USB issue for all three ports. Now I've just got to find a source for the replacement parts.

I'll post back if I'm successful.

Thanks.

 

[frechetn]

Correction, second part number should have been AAT4610BIGV-T1.

 

[DrB0b]

http://www.utsource.net/AAT4610.html

Here is the only place I can see to buy them in less than 3000 in a package. Ive never bought from them tho, I usually go with digikey.com but they dont seem to have this part.

"Silence is golden, duct tape is silver...

 

[frechetn]

Thanks for the information. I'll give them a try.

 

[frechetn]

Both USB ports are operational again after replacing both AAT4610AIGV-T1 (U1 of the USB/Audio Board and U28 of the System Board). Both circuits had some pad and trace damage that needed to be repaired too.

DrB0b's suggested source was worth it.

 

[rclarke250]

Nice Job!!!