P4c800-E deluxe Issues.

[briand805]

Pc specs.
Asus P4c800-E deluxe mobo
3ghz P4 with ht socket 478
Bfg 6800 Ultra OC video card
Audigy 2 zs platinum pro sound card
Kingston Ram 2 gigs.
Two WD Caviar Hard drives 80 and 200gig,
Antec PlusView II case.
Cd And dvd drive not connected.

Well I built this pc several years back and it was awesome until the day the ex decided to use it for the first time. Withing 15 seconds there was smoke, fire and several small explosions from the power supply.. A top of the line enermax..Obviously it wasnt her fault..however I was so Irritated i just stuck it in storage.

I recently got it out of storage and decided to check the damage. I pulled every component and tested them all in another Pc.. hard drives operate, rams good, video card ok, sound card operates and the processor is fine.

So i was given a new 22" monitor at Christmas and picked up a new BFG gx series 550w power supply two days ago.

I think this is where i screwed the pooche.. When i installed the new power supply I accidentally connected the 4 pin connector that's attached along with the 20 pin main board connector to the 4pin socket for the cpu. I turned the computer on and nothing.. I quickly saw my mistake and attached the correct ATX cable. And the computer started up however...

The system acted a little buggy at first the fans kept going after first shut down.. Also had a couple instances of the bios resetting after i shut the pc off. And one instance of a message for the video card saying it was not getting sufficient power. System time errors etc.
Then the computer seemed to be operating fine last night for several hours when it just shut down.. Wouldn't reboot..

No post, no beeps, no fans, nothing but the green board light. When I unplug the 4pin molex for cpu power the fans turn but that's it. When i plug it back in And try and power up the protection circuit on the power supply trips.

Ive completely removed the board from the case and check for shorting on the post. I couldn't see anything. I also visually inspected the board for bulging caps and what not and didn't find any. Which probably doesn't mean anything from what im reading about here today.

Pulled the processor and checked in another computer and it operates fine.
I have also removed all components including ram and tried trouble shooting the problem one piece at a time, several times with no luck.

I also replaced the cmos battery which was even functioning at 1v when i tested it.

In addition I have tested with a multi meter the power supply and all rails appear to be functioning normally.

So at this point I've looked online for a new socket478 board that compares with little luck. Maybe im looking in the wrong place.

Id love to keep the board and replace the caps if thats all that is wrong with it.
I can also take some magnified pics and post them if that would help things out.

Any suggestions are greatly appreciated.. thanks for your time.

[briand805]

Re: P4c800-E deluxe Issues.

I just want to add. I understand i am in an extremely advanced forum asking for advice from folks that have worked hard and spent much time acquiring information that i am asking for. I do appreciate ANY input i am given here. even if it is " learn more" or "" read more", I am trying. In all honest I am lucky to still have the computer i want to repair. It is actually the only pc i have left after thieving ass holes went through my stuff during the time i was gone from home for year. They stole many thing but left my computer. I built this pc with my own hands and i want it to work like it did when i had to leave. I apologize for sounding so dramatic but i take pride in my accomplishments.

Thanks again. Brian

[Toasty]

Re: P4c800-E deluxe Issues.


The connectors are not keyed alike, so I don't see how you could do that?

Pull the connectors and look at them, you'll see what I mean.

The fact that it was running, seems to indicate you are probably okay. The PSU may have gone into protection or you tripped the "Power OK" circuit. It should be okay if you let it sit for a minute unplugged from the AC.

Double check the battery and do the hard reset "Clear RTC RAM" procedure.

From the manual: Section 2.7, page 2-19 ( I have this mobo )

2. Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in
CMOS. You can clear the CMOS memory of date, time, and system
setup parameters by erasing the CMOS RTC RAM data. The RAM
data in CMOS, that include system setup information such as system
passwords, is powered by the onboard button cell battery.

To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the
  cap on pins 2-3 for about 5~10 seconds, then move the cap back
  to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter 
  BIOS setup to re-enter data.

-------------------------------------------------------------------
Except when clearing the RTC RAM, never remove the cap on 
CLRTC jumper default position. 
Removing the cap will cause system boot failure!
-------------------------------------------------------------------

You do not need to clear the RTC when the system hangs due to
overclocking. For system failure due to overclocking, use the C.P.R.
(CPU Parameter Recall) feature. Shut down and reboot the system so
BIOS can automatically reset parameter settings to default values.

These are available on Ebay for ~$100. Also, several board members may have access to these so I would post in the "Wanted" section in the forums here.

Never unplug or remove anything from these mobos until you have discharged the PSU and the green mobo light is OFF. Discharge the PSU by turning it off by its power switch and unplugging it from the AC power. Then push the computer power button. The green light should extinguish and the fans may spin a bit.

Toast

[PCBONEZ]

Re: P4c800-E deluxe Issues.

Several of the Enermax models suffered from glue on the PCB that becomes conductive when heat hardens it over time and can short out the IC chips.
-
https://www.badcaps.net/forum/showthread.php?t=5466

[briand805]

Re: P4c800-E deluxe Issues.

thank you very much.

[briand805]

Re: P4c800-E deluxe Issues.

I have already tried the mentioned procedure after failure to no avail. As far as the keying goes the connector pushed right on strangely enough although the fault is still my own user error.

[Toasty]

Re: P4c800-E deluxe Issues.

Again, since it was running, I doubt there is damage. These are good candidates for recapping. Mine has UCC and OST caps on the VRM in and out, and although there are no visible problems, they aren't all prone to show it. Caps can and do go bad even if the system is not in use. Brand new in the box boards have been found with busted caps. Your "for several hours when it just shut down" and won't restart statements, while not dramatic, is one of several indications of cap failure.

TopCat, Willawake, and kc8adu have all reported on doing (at least) one of these boards.
TopCat has this in a ready-made kit to completely redo the board. Get the Premium kit.

Mine has these (varies slightly board to board):
7 - 1500/6.3v - 8mm - sub with 1800 if 1500 not available
4 - 1200/16v - 10mm - sub with 1500 if 1200 not available
20 - 1000/6.3v - 8mm

These boards are also -excellent- candidates for poly-modding, but IMO you should just get it back to working status for now.

Toast

[briand805]

Re: P4c800-E deluxe Issues.

Again, since it was running, I doubt there is damage. These are good candidates for recapping. Mine has UCC and OST caps on the VRM in and out, and although there are no visible problems, they aren't all prone to show it. Caps can and do go bad even if the system is not in use. Brand new in the box boards have been found with busted caps. Your "for several hours when it just shut down" and won't restart statements, while not dramatic, is one of several indications of cap failure.

TopCat, Willawake, and kc8adu have all reported on doing (at least) one of these boards.
TopCat has this in a ready-made kit to completely redo the board. Get the Premium kit.

Mine has these (varies slightly board to board):
7 - 1500/6.3v - 8mm - sub with 1800 if 1500 not available
4 - 1200/16v - 10mm - sub with 1500 if 1200 not available
20 - 1000/6.3v - 8mm

These boards are also -excellent- candidates for poly-modding, but IMO you should just get it back to working status for now.

Toast

Im going to go ahead and order the caps.. Ill be needing a new iron and what not also as it was in the items that were stolen from me.

[madmax_2069]

Re: P4c800-E deluxe Issues.

Several of the Enermax models suffered from glue on the PCB that becomes conductive when heat hardens it over time and can short out the IC chips.
-
https://www.badcaps.net/forum/showthread.php?t=5466

Not to hijack the topic or grave dig, But what you said sounds like the same issues with the stock PSU in the HP D530 small form factor computer, the PSU in them was prone to blow up after long term use because of the same issue (since they are a business computer they are on all the time). There is videos on youtube showing them popping. Thats why i bought a Antec 300 case and a Antec basiq 500w PSU for it. all is well so far.

[Toasty]

Re: P4c800-E deluxe Issues.

[briand805]

Re: P4c800-E deluxe Issues.

looking to order those caps today or tomorrow. We have just been having an issue with the USPS. No delivery on our street aside from Saturday due to construction since Christmas time! We have also had lost, stolen and damaged mail. DON'T get me started! A 1500 check delivered to the wrong home! Thankfully I have an honest neighbor. I am looking forward to this project. Thank you.

[stj]

Re: P4c800-E deluxe Issues.

i think the new psu is bad,

The system acted a little buggy at first the fans kept going after first shut down.

how can the fan's get 12v if the psu has shutdown - they cant.

[Almighty1]

Re: P4c800-E deluxe Issues.

Again, since it was running, I doubt there is damage. These are good candidates for recapping. Mine has UCC and OST caps on the VRM in and out, and although there are no visible problems, they aren't all prone to show it. Caps can and do go bad even if the system is not in use. Brand new in the box boards have been found with busted caps. Your "for several hours when it just shut down" and won't restart statements, while not dramatic, is one of several indications of cap failure.

TopCat, Willawake, and kc8adu have all reported on doing (at least) one of these boards.
TopCat has this in a ready-made kit to completely redo the board. Get the Premium kit.

Mine has these (varies slightly board to board):
7 - 1500/6.3v - 8mm - sub with 1800 if 1500 not available
4 - 1200/16v - 10mm - sub with 1500 if 1200 not available
20 - 1000/6.3v - 8mm

These boards are also -excellent- candidates for poly-modding, but IMO you should just get it back to working status for now.

Toast

I have a question, does the premium kit contain all the capacitors on the P4C800-E deluxe because from pictures, it seems there are 34 capacitors.

[mariushm]

Re: P4c800-E deluxe Issues.

Do you realize you're asking in a thread that was inactive for 4 years ( last answer February 2010)?

[Almighty1]

Re: P4c800-E deluxe Issues.

Do you realize you're asking in a thread that was inactive for 4 years ( last answer February 2010)?

Yes but the motherboard is over 10 years old so it will just move the post to the top. I would start a new thread but as a new user, it doesn't let me start new threads.