HP Pavilion 8776C Power Supply

[NJLOAD]

This machine belongs to a friend of mine and the power supply is fried. I called CompUSA and the person I talked to on the phone said they have power supplies in stock that would fit this unit. Well when I get to the store the lead tech guy said that it is a proprietary power supply and I would have to contact HP. Does anyone know if this is true?

Any help appreciated.

NJLOAD

 

[Ozoned]

Originally posted by: NJLOAD
This machine belongs to a friend of mine and the power supply is fried. I called CompUSA and the person I talked to on the phone said they have power supplies in stock that would fit this unit. Well when I get to the store the lead tech guy said that it is a proprietary power supply and I would have to contact HP. Does anyone know if this is true?



Any help appreciated.



NJLOAD

yes, unfortunately you will have to pay through the nose with hp..

 

[JK949]

Not true. if the power supply meets or exceeds the oem units wattage requirments and fits in the case
it will work just fine. it must have all the right connectors as the oem unit.
They tell you it won't work because they don't want to be responsible if
you don't install it correctly.

 

[NJLOAD]

Thanks JK949, the tech person at CompUSA said the reason it was proprietary was because of the connectors. Where would I find out what power supply would work and has the right connectors other than opening the box's?

thanks for your help.

 

[LiLithTecH]

Here is a replacement that will work (HP Spare part #0950-3751)

Hp Pavillion Power Supply (Enlight/Delta)

 

[Dowfen]

We've got a couple PC Clubs around and they stock the same PSs. You can probably find it cheaper online though. It is nice having a store like that around for the emergency items.

Eric

 

[imported_Phil]

Not the first time that HP have used custom connectors, but I'm fairly sure that ATX-based HP supplies all have standard connectors for hard disks, etc.

The only problem I'm aware of personally is with size constraints. They really do cram them in there

 

[NJLOAD]

Thanks for all the help, I checked out the link above and it didn't have the pavilion 8776C model and also the hp part# on the ps is 5184-3961. Any other links appreciated, have to go to Lowe's now with the wife so will check back later.

again thanks for all the help. sure would like to acquire one to get my friend back up and running.

njload

 

[tkistre]

Although a standard ATX power supply will most likely work, it is possible that HP may have a proprietary power supply. I haven't run into any major manufacture computers yet that a normal ATX power supply wouldn't work, but I know of at least 2 instantances where a friend who has a computer business did run into a situation with a proprietary power supply. One was a DELL and I don't remember the other brand. The connector was the same, but it was wired different. He unfortunately did not find out till it was too late. This happened about 3 years ago.

 

[NJLOAD]

This PS has a regular 20 pin ATX connector and right next to this connector on the mother board is a 3 pin conector with P9 stamped on the connector with Black/Green/Black wires on it. It also has 5 Peripheral connectors and a floppy connector. The three pin P9 looks like a smaller version of the floppy connector. I think this is the problem connector for a universal supply.

 

[tkistre]

What I'm saying is that even though it has a 20pin connector, it's possible it could be wired different. Because manufacturers have motherboards built to their specs, they can have the connector wired slightly different to keep you from buying a universal part. It is not unusual that some cheaper systems in particular to have special made motherboards or cases, so if you need to exchange one of them, they will not interchange with a universal one. Like I said earlier, I have not run into this problem myself, but I do know of it happening before. It's likely you may be able to get a diagram to show how the power connector is wired to compare it to a normal ATX to make sure they are the same.

 

[NJLOAD]

I even went to Liteon's web site and go figure the power supply page is under construction. Each day I hate HP and Compaq more and more. I love it when they put the system restore on a partition and the hard drive crashes and you need to buy new restore disks.........Already ran into this problem with a laptop and Compaq tech support. The way I figure it when you buy a system the restore information should be on CD's and shipped with the system.

OK now that I vented.

Thanks for the reply.

NJLOAD

 

[tkistre]

I know how you feel. I just purchased a Sony Laptop 2 weeks ago and it has a hidden partition with the original software setup. If I want a copy, I have to burn my own CD's with Sony's back up utility. Also, I've had several customers run into the same Restore CD's problem, but there is one thing for people with HP computers still under warranty. If your computer install gets corrupted or such that Windows has to be reloaded, they will send you the Restore CD for free. It's only if it is out of warranty that you have to pay for the CD's. I just ran into this for a customer about 2-3 months ago.

 

[NJLOAD]

Yea, the laptop was out of warranty..........thanks for the help. I need to sign off for the night but I hope someone else might come up with a concrete answer or place where I can locate what I need.

NJLOAD

 

[JK949]

Sounds like the standard 4 pin cpu connector that is standard on all psu's minus one wire.
I dont think that would be a problem. the extra wire should not be problem since
It's not connecting with anything on the motherboard. if it fits into the 4 pin slot
it should supply what ever juice is needed. the connector sends a standard amount
of volts to thr cpu.
The question is what cpu you have.if it's an old one, which it sounds like it is, it may
not need the volts the new psu will supply.
Need to know what cpu including the mghz. 233, 500, 1.3 exe........

 

[GregANDTCH]

Here's a link to the power supply at HP:
HP store
I wouldn't want to pay $73 for it though.:brokenheart:

I wish one of these would work:
Inwin PS

Enhance PS

YMMV

What do your plugs look like compared to the ones shown on that eBay page?
Can you compare the color coding on your PS wires to another one & see if "like colors"
are in "like holes"?

Here's a mechanical drawing of one.
See if it's the same.
PS3 at PC Power & Cooling

right next to this connector on the mother board is a 3 pin conector

I think that connector might be to monitor the fan speed in the power supply.
It would probably work fine without it.
If the machine worked, you could probably look in the BIOS & there would be a page to show you fan speeds & one would be the PS fan.
(Just guessing)

 

[LiLithTecH]

GregANDTCH

I just replaced a PSU on the very same model HP with the Enlight on eBay
(did not purchase through them though) and it worked without a hitch.

 

[NJLOAD]

LiLithTecH, do you have a model number or anything I can use to look one of these up? The other eBay link above showed pictures of the connectors and the one I have now has a 3 prong connector that looks like a floppy drive connector but smaller. This connector connects to the mother board right next to the 20 pin connector. I am at work now so I can't post pictures but other than any other power supply in any other system, this one is thin and has the 3 prong plug that connects to the mother board.

thanks for any help.

 

[LiLithTecH]

NJLOAD:

There are 4 different versions of the 8776C.
2977A, 2977AR, 2978A, 2778AR (this number is listed as System Number on PC tag)

The Spare part number from HP is 0950-3751
which is the same listed on ALL of the models for
replacement PSU.

I replaced it in a 2977AR & a 2978A with no problems.

I did not however purchase it from the listing on eBay
but rather through a vendor I use locally.

The eBay listing is the same model number and it lists the
required spare part number (looks the same to what I used).

By the way, why do you think the PSU is fried? Did you open it up?

 

[NJLOAD]

Yes I opened it up and major melt-down inside like a cream colored swiss cheese looking mess.

Thanks for the reply and I will research the numbers.

NJLOAD

 

[NJLOAD]

LiLithTecH: One other thing, looking at the pictures of the connectors on the eBay listing it did not have the 3-prong connector that I have on the fried PS. Did your replacement have this connection on the Power Supply and the Mother Board? The pictures on the listing had a square looking 4-prong connector............

Thanks
NJLOAD

 

[LiLithTecH]

The PSU has the following:

1 - 20 pin ATX power connector
5 - 4 pin Peripheral connectors
1 - 4 pin Floppy connector
1 - 4 pin Video Power connector
1 - P4 ATX12V connector

I believe the 3 pin you are talking about is the
Power Supply fan connector (has a P7 or P9 stamped on it).

This replacement does not require it (and not included) as it
has a Built-in Fan Controller.

 

[NJLOAD]

Thanks, that was the connector that was throwing me off. I looked at the eBay ad again and they do say in the ad that you won't need this fan connector because the power supply controls the fan per temperature control so to speak...

This looks like the baby I'm looking for.

Thanks again
NJLOAD