Old Dell PS 5201-7D 200 watt psu

[everell]

Have inherited old Dell psu. Somewhat strange in that wires to 20 pin mobo connector don't match the usual plan. PWM is UC3845 and protection chip is TSM110 - could not find data sheet for this one. 5VSB works but +5/+12/+3.3 are all dead. Date of mfg stamped on case is 12-07-00. The Dell it came out of is either unique or antique. Anyone know anything about it?

[Krankshaft]

Re: Old Dell PS 5201-7D 200 watt psu

Dell departed from the standard PSU pinout in late 1998 they are proprietary supplies. They have since returned to the standard ATX layout.

I have seen special conversion harnesses allowing you to use standard ATX supplies on these boards.

[Toasty]

Re: Old Dell PS 5201-7D 200 watt psu

Google: dell power supply adapter OR dell motherboard power supply adapter

Dell Adapter

or (cheaper)

DELL MOTHERBOARD POWER ADAPTER



Toast

[PCBONEZ]

Re: Old Dell PS 5201-7D 200 watt psu

Those adapters are to use standard PSU with Mobo that everell's PSU is supposed to go to.
They don't convert his/her PSU to standard.

Dell used those on late generation P3's.
Not sure if some or all.

[Toasty]

Re: Old Dell PS 5201-7D 200 watt psu

Ah-ha! Gotcha.

So, if you want to go FROM Dell PSU TO ATX mobo, then it looks like it's a homebrew project.

Try here, bottom of the article:
Dell Case Mods


Toast

[PCBONEZ]

Re: Old Dell PS 5201-7D 200 watt psu

As I recall you can get by with switching the wires around in the plastic connector.
You should look up the pin-outs and check wire colors first because I think some of the Dells used non-standard wire colors for the voltages.

Here is the odd-ball pin-out.
http://pinouts.ru/Power/dell_atxpower_pinout.shtml

[PCBONEZ]

Re: Old Dell PS 5201-7D 200 watt psu

Oops.
Either that drawing is wrong or my memory is.
There is no +3.3v shown.

[PCBONEZ]

Re: Old Dell PS 5201-7D 200 watt psu

Nope, looks like that PSU has no 3.3v rail.

[PCBONEZ]

Re: Old Dell PS 5201-7D 200 watt psu

The 3.3v is there, but not in the 20 pin.
3.3v is in the 6 pin mobo connector.

[Krankshaft]

Re: Old Dell PS 5201-7D 200 watt psu

Gotta love Dell just replaced 2 toasted HL Data Storage drives on 2 different Dimensions one was an 04 model and the other an 05 model. The drives weren't even heavily used.

One would read CDs but not burn CD-Rs the other wouldn't read Data CDs but would read music CDs and not would burn CD-Rs with a bit of a racket.

Dell always seems to cheap out on parts and I'm sure these proprietary supplies were no different.

[everell]

Re: Old Dell PS 5201-7D 200 watt psu

Thank you Mr. PCBonez - I checked out the website with the pinout information. The 5VSB came up just fine, and when I grounded the proper color coded wire (PS on), the other voltages came on just fine. Guess someone dumped this PS because it didn't have a standard pinout. I don't have any use for it now either, but it was great to learn that you should never plug in a power supply and turn it on without making sure it has a standard pinout!

Tom

[weirdlookinguy]

Re: Old Dell PS 5201-7D 200 watt psu

Older HL drives are pretty decent Krankshaft. Bet you didn't even try cleaning the lasers first.

[370forlife]

Re: Old Dell PS 5201-7D 200 watt psu

Gotta love Dell just replaced 2 toasted HL Data Storage drives on 2 different Dimensions one was an 04 model and the other an 05 model. The drives weren't even heavily used.

One would read CDs but not burn CD-Rs the other wouldn't read Data CDs but would read music CDs and not would burn CD-Rs with a bit of a racket.

Dell always seems to cheap out on parts and I'm sure these proprietary supplies were no different.

I had that same problem with our dell. We bought a lightscribe dvd-ram drive for it because the cd-rw it came with was acting up. I didn't know this at the time, and i swapped it out with my computer's (at that time, it was a 667mhz p3, about 3 years ago.) white compaq (lite-on) 40x cd-rom. For some reason, that dell's cd-rw would write cd's just fine, but when you tried to read, it would be very slow. I played red alert 2 just fine with the compaq 40x, but with that drive, it would read the cd so slowly the game ran really bad.