Topic: Power Issue, On Delta Psu (Read 124 times)

Trajan · « **on:** January 24, 2004, 12:52:00 PM »

Well long story short friend was having an Error 7 issue and brought it to me. As soon as I tried to turn it on, I did make sure nothing was loose or anything like that, the machine would flicker on for an instant then nothing. I have a delta PSU and I've read about fuse problems. It doesnt look like mine is a tube fuse; it looks like a small capacitor, it says "T3.15A" on it ..

But before I go trying to replace the fuse; I did check it with a multimeter. I connected ground to the ground on the molex connector and connected the other needle to the 12v line and then turn the xbox on; it flickered, the fan would start to turn then turn off. My multimeter will jump from 0.0 to about .8v when I turn it on.

What can I do? If this is the fuse where can I get one and .. could someone kinda give me a way to replace it. The guides I have read were not for a -Delta- PSU. Oh, and if there's any other way to try to fix what I have I'm all ears.. thanks in advance.
*Trajan

Chancer · « **Reply #1 on:** January 24, 2004, 01:50:00 PM »

The fuse in this PSU is a "Wickman" Fuse. Soldered into the board. You will have to unsolder it to replace it. Not sure which country you are in but here in the UK they are available from places like Maplins or Farnell. Value of it in case youre not sure is 3.15 Amps.
If you have a meter and measure accross it it should measue short circuit or use the continuity tester if the meter beeps with the leads across the fuse its ok. As this fuse protects the AC input its unlikely to be faulty if the fan kicks. More likely to be the decoupling capacitors in the 12v supply or a short on the 12v rail on the motherboard.
All The Best

Trajan · « **Reply #2 on:** January 24, 2004, 04:07:00 PM »

Chancer, you're a genius!! I didn't use any of that info directly but it let me THINK about the problem. My friend had been working on it; and when I got it it wasn't completely put together. I took everything out of the case (Believe it or not i'm like a pc tech) the mobo and psu troubleshooted like I would a pc. I hooked the DVDROM, the power connector from case (I can stood the case upright next the mobo so I could connect) and turned it on and BAM Flash Orange and Green .. YAY! Ok so when I looked at the case there was a screw in the bottom .. so it WAS a SHORT .. thank you!

More reason you're a genius .. I think I have FIXED Error 07. I hooked up everything like normal. Booted it, everything powered and all that, got the Xbox splash screen then BAM Error 07. Ok, people say swap ide cable; found a 40-pin cable and did .. Nothing .. I was wondering if it wasnt getting power so I felt; it spun just fine .. I decided, screw that let me use my Multimeter ..

The 12v was reading 10.33v and the 5v line was reading 4.01v .. I thought that was weird, but decided it may be tolerance .. Thought about it and thats like way too much variance .... I got a computer (atx psu) and had everything in the Xbox hooked up normally; the hdd was hooked up and everything .. EXCEPT I hooked my computers ATX Power- Supply's molex connector up the hdd instead of the Xbox molex connecter ..

I first turned my computer on, which turned on the hdd, waited a few seconds, then turned on my Xbox ... BAM Error 07 GONE .. .. It was the power supply .. Because my ATX PSU gave flawless reading on the multimeter!
Thanks
*Trajan

Edit: One more q if you dont mind. I dont care if I have to replace; I'm just glad it works. But can I fix the problem that the PSU is having? Or whats the best PSU to get (the same delta or one of those lik-sang things .. or what?) .. Again Thanks

This post has been edited by Trajan: Jan 25 2004, 12:08 AM

b01 · « **Reply #3 on:** January 25, 2004, 07:44:00 AM »

Can an admin please pin this thread, this is VITAL information for error 07/12 fix.

Trajan · « **Reply #4 on:** January 25, 2004, 09:18:00 AM »

ya B01, I'm not saying this will fix ALL 07 .. But come on, as many of those threads as I have read about 07; hdd's don't fail that often. This should definitely be a troubleshooting option. And some say that replacing the hdd fixes it; well it could be that the new hdd u get may just be able to operate at those low voltages .. This is definitely something I will recommend people check before replacing things ..
*Trajan

Chancer · « **Reply #5 on:** January 25, 2004, 10:02:00 AM »

glad to hear you sorted it. I would replace the power supply with the same type just to make sure everything is ok compatibility wise.
Sounds possibly like the low output from the power supply will be down to the decoupling electrolytics. Next time I have one in bits I will try and pin down which ones and give the circuit refs and the types.
All the best and well done on sorting it.

Trajan · « **Reply #6 on:** January 25, 2004, 10:52:00 AM »

ya thanks chancer. I ordered a new Delta psu. One quick q, is it common for these psu's to give such borderline outputs? I wanted to add some cooling and what not to mine, but dont want to tax the psu if they are normally these weak ..
*Trajan

This post has been edited by Trajan: Jan 25 2004, 06:53 PM

Chancer · « **Reply #7 on:** January 25, 2004, 01:30:00 PM »

The PSU should be fine. The problems usually relate to heat inside the xbox damaging the electrolytics in the PSU. Fitting a fan on a new PSU would actually help this so you should be fine.

b01 · « **Reply #8 on:** January 26, 2004, 07:00:00 AM »

QUOTE

ya B01, I'm not saying this will fix ALL 07 .. But come on, as many of those threads as I have read about 07; hdd's don't fail that often. This should definitely be a troubleshooting option. And some say that replacing the hdd fixes it; well it could be that the new hdd u get may just be able to operate at those low voltages .. This is definitely something I will recommend people check before replacing things ..

You are right with HDD's working at different voltages, that is why the samsung HDD worked when the WD would not.

They wasted thier time replacing the HDD becuase the problem is still there and may cause bigger problems later.

I just hope an admin sees this and pins it, as two people can verify that this caused an error 07 and error 12

Trajan · « **Reply #9 on:** January 26, 2004, 07:18:00 AM »

Really, it fixed your problem too B01? Yeah, I mean as much problem as people are having with 07, and the lack of a real fix, I think this should be pinned. Or maybe a cleaned up Troubleshooting thread should be made .. I think I might ask a mod or something ..
*Trajan

b01 · « **Reply #10 on:** January 26, 2004, 08:50:00 AM »

Do I need to buy a new PSU?

Trajan · « **Reply #11 on:** January 26, 2004, 09:05:00 AM »

Are you having the low voltage on the molex connector problem? If so, then ya, unless you know how to fix the electrolytics like Chancer was talking about. That's a hell of a lot better than a dead xbox! I think it does occur as a result of heat though. I know the xbox I have (which is a friend's) normally is in the enclosed entertainment center and I'm sure it gets way too hot really ...
*Trajan

b01 · « **Reply #12 on:** January 26, 2004, 08:39:00 PM »

Well, I believe it was a heat problem that caused this. I put the XBOX back together and left the DVD and HDD out, it continued to work fine for 40 minutes. I decided to put the DVD back in, as soon as I put the HDD back in, BOOM problem.

The 1.4 XBOX generates ALOT of heat, and they do NOT have a fan on the GPU, that heatsink aint cutting it. Plus the Phillips DVD has this bulging apperatus on the bottom that is NOT good for airflow, and the lousy fan they have in the XBOX dont pull the heat away from the GPU.

Author Topic: Power Issue, On Delta Psu (Read 124 times)