12-23-2008 10:11 AM
I did a little research and learned that 3 different companies made these power supplies and sold them to HP/Compaq. If your power supply went boom, please reply to this post and let us know who originally made your failed part.
1) LITE-ON, part number PS-5181-1HFE
2) Amperor (Intertek), part number CPS-186P
3) Hipro, part number HP-L185VA3P
Thanks. This information should help figure out if there is a trend relating to the failures associated with one specific subcontractor.
Solved! Go to Solution.
12-29-2008 10:02 PM
I put it all back together before I saw the 3-pin device blown, but I just discovered the back half of the (TO-92 I'd guess) plastic case here on the floor, and it had to come out of this power supply.
01-06-2009 10:43 AM
01-06-2009 04:16 PM
I don't know if it is reliable, but I saw a couple articles on the internet that said that HP's supplier used a poor quality hot melt glue that is hygroscopic. When it absorbs water it becomes conductive, and after sitting for long periods absorbs enough water that the conductivity overloads the supply.
Your best bet is to either buy a supply that has been reconditioned- including removal of this hot glue- or to find a way to chemically dissolve the glue before powering up the power supply. This all assumes that what I saw is accurate. It could probably be checked with an ohmmeter if you're so inclined.
01-06-2009 06:53 PM
05-28-2009 08:05 AM
06-11-2009 05:55 AM
06-12-2009 04:57 PM
Not only that, you have to clean the heat sinks on these suckers often or else they will overheat and shut-off.
06-16-2009 03:42 PM
Bought a replacement PS off eBay and it lasted about a week (BANG again).
I ended up stripping all the usable parts and scrapping the unit. Not worth it to chase good money with bad IMHO.
07-07-2009 09:28 AM
PSU is a model PS-5181-1HFE. It was working fine but out of service for about 4 months. Went to power it up and boom. Computer sat in my shop out back during down time.
Is there a recall on this Power Supply? I will do some further checking but hope for a reply.
07-08-2009 06:10 PM
My suggestion would be to get a new or used Amperor or Hipro power supply in replacement of your LITE-ON supply.
07-06-2014 05:39 AM
I have a HIPRO model HP-L1520F3P Rev:01
Have started to replace the electrolytics as 6 had bulged. Also some strange brown gunk strewn randomly within the PSU. Took a while to clean that off.It looks like an exploded cap but I cannot find the remnants (electrodes).
C207 missing (under screw-on heatsink) but no evidence it was ever present and no value indicated.
The seal was intact but I suspect the unit may have been dropped as there is a Darlington which has been shaken loose and the tracks have lifted slightly. I have tried to stabilise it but I feel the tracks may need to be rewired.
When plugged in and PWRBTN pressed, characteristic 4x red led 2s repeating pattern is given.
Pity, its a nice size (albeit a bit heavy) and would be nice if upgraded. Currently no HDD, no RAM and a 2GHz Celeron.