voltages... good or bad?

[gustie]

i still need to remove the PSU in THIS pc to check for bad caps..

but this is what OCCT says about it...





seems to ripple a bit and seems LOW?
this PSU scrap or ok?

[zandrax]

Re: voltages... good or bad?

OOCT relies on motherboard's hardware monitor to read voltages and HM isn't sensitive enough to detect real ripple (voltage transients, they last a fraction of second): what you see is some fluctuation (especially on the vcore graph), maybe some noise (the 10 min spikes on the 12 V graph), but not ripple.
2nd: this psu seems quite low on the 12 V rail because it has a big jump when OCCT stresses the cpu and on your motherboard the 12 V is feeding the processor; it may be a group regulated one (old design) since all voltages are lower, though within ATX tolerances, when the cpu is at full load.

My suggestion is trying another psu, a recent and good one, and checking voltages with a oscilloscope (if you own it): don't trust an uncalibrated hardware monitor at all, its readings may be off (a digital multimeter is useful to compare values, but won't give you ripple anyway).

Zandrax

[gustie]

Re: voltages... good or bad?

my CPU has a small feed like the P4 type lead with just 4 pins too - but i dint know what voltage that is...

[zandrax]

Re: voltages... good or bad?

my CPU has a small feed like the P4 type lead with just 4 pins too - but i dint know what voltage that is...

It's the ATX 12V connector: yellow cables are 12 V, black ones are ground
Your psu is weak on the 12 V side, vcore is based on the 12 V and its fluctuations are up to 0.2 V on 1.6 V: if I were you, I'd try another psu.

Zandrax

[gustie]

Re: voltages... good or bad?

thasnks

i will open it up over the weekend to check caps too....

this week ive found a PSU and a mobo with bad caps...

now i have a spare mobo and PSU to recap - it wont hurt if i kill these

just need an iron now!! and the caps lol

[KeriJane]

Re: voltages... good or bad?

Hi gustie!

For the caps, you can probably obtain them right here from Badcaps.net.

DigiKey.com is my favorite.

There are a lot of caps on eBay, but don't order from the Asian vendors as it will usually take at least 2 weeks to arrive. Also, they sell a lot of no-name and counterfeit caps.

The soldering iron is much simpler.

For Power Supplies, nothing too fancy is needed for soldering. Most standard pencil type irons are fine. A pointed tip is better than a chisel tip for tight areas.

Now for De-Soldering, you have a few options:

1- they make a desolder wick that will wick away the solder. I don't like these, but they are cheap.

2- A spring-loaded desolder tool. These work, but have to be cocked before every use and the inertia from the sudden release can cause you to bump and possibly damage things. These things are about the size of a large marker and are fairly cheap.

3- a soldering iron with a rubber bulb attached to a hollow tip. These things work great and they're cheap. Radio Shack sells one for like $15. They even carry spare rubber bulbs! Just be careful where you point it when squeezing the bulb IN .

4- a vacuum-type professional desoldering station. That's as expensive as it sounds and is probably a good idea for desoldering delicate multi-layer motherboards.

Have Fun!
Keri

[gustie]

Re: voltages... good or bad?

will these ship to the UK?

[tazwegion]

Re: voltages... good or bad?

Internationally I source my low ESR SamXon capacitors directly from their sales rep "Bigpope" he used to frequent these forums (don't know about recently)

Get a DMM and strip that questionable PSU down... be a great start

[gustie]

Re: voltages... good or bad?

whats a dmm?

[stevo1210]

Re: voltages... good or bad?

dmm is a digital multi meter.

[gustie]

Re: voltages... good or bad?

taz

i opened that PSU - 3 bulgers - one vented!