This specification for the HP Z200 MT can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z200 MT boardview and Z200 MT schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z200 MT is accurate,...

This specification for the HP Z200 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z200 boardview and Z200 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z200 is accurate, safe, error...

This specification for the HP Z200 Small Form Factor Workstation can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z200 Small Form Factor Workstation boardview and Z200 Small Form Factor Workstation schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties...

Hi
After a minor bang my HP Z200 workstation stays dead. Investigating the PSU, a DPS-320KB-1 A, shows a blasted resistor (R901) near a powerswitch IC (TNY279PN). I cut out what was left of the resistor to be able to read it but I'am not 100% sure reading the first color code. It looks like braun. So its probably a 1 Ohm with 5% tolerance. But how many Watt could it be. It looks like a safety resistor. I cannot find any scheme of this PSU. On Youtube is only one repair video without comment in which they change the power-IC. Any suggestions to make this PSU a life again? Could it be only...

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

I measured the pins on the 20 pin connector after taking it out of the PC. With the scheme of this custom build connector by HP I could find the 12V pins (gave a nice stable 12,12V and did not switch off) but I could not measure any 5V on the designated pin, was just 0,0V. A 3,3 line is not available in this connector. The 5V must have been working otherwise I could not have started up the system. Is there any explaination that the 5V was not up on the pin?

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

Yes they can, I would monitor the 5VSB and see if it goes down when the computer turns off.
So you know which part of the PSU it is that turns off, remember that the standby and main PSU are like two different power supplies.
They do however depend on each other, well, the main usually depends on the standby that is.

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

Visually it looked OK so I gave it a go. But now its not working as it should I will make it my next step. I don't have a cap meter so I hope the last electronic store in the surroundings can check it for me.
Can components, like diodes or resistors that I find near the TNY become bad and lead to the described behaviour?

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

It is not uncommon for the big filtering capacitor to go bad in power supplies like these.
That is also one of the causes why the TNY chip can explode, it does not take kindly to running with no capacitance...
So did you test that capacitor already?

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

I started up the PC without the bulb light and it came up good, without any strange noises. But after 5 min. or so the PC reboots automatically like it had a power failure (all lights out for a short moment). It looks like some other parts are not working optimal. Any idea in which direction to look for.

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

Hi Milio,

You're on the right track here!
However, the series incandescent light bulb trick is only good for testing the PSU without any load - that is, to see if the PSU can turn On and stay On without anything blowing up when there is nothing attached to it. If it can do that, then you can remove the light bulb and test it on a motherboard (preferably one that isn't of much importance, though the PSU should be OK at this point.)

The reason the light bulb either flickers or stays On when you turn On the PSU...

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

Hi Guys, I need some extra support. I changed the TNY279PN, the safety resistor and two smaller caps in there neighbourhoud. For now didn't replace the big cap. I started the system with the bulk light attached and what happened.
When I plug in the power I hear some clicking sounds and the mobo led lights up green. Also the fans spin shortly. The bulk light of 100W flames up a bit when you plug in. When I push the power switch I hear more clicking sounds and the bulk light stays on in a flickering way. Is this how it should be or is it...

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

Shouldn't matter too much.
I generally prefer to leave my PCs plugged in (but turned off, as in soft-off mode) to keep the mobo CMOS battery from going weak. It also keeps the 5VSB and mains caps reformed. Besides, when the PSU is sitting in soft-off mode, the APFC won't be running, so the mains cap won't be under much stress. It's only when the main PS is turned On that the APFC boosts the voltage across the mains cap (and at high frequency), which is what causes cheaper brand mains caps to fail most often. Otherwise, I have non-APFC...

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD

I merged post #8 & #13 from the other thread here, please don't doublepost.

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD


Well, as per my last point (6) above, you could probably mitigate any explosions by using a 40-100 Watt incandescent light bulb in series with the PSU's line input to limit current & power. That should prevent you from blowing any of your new parts. ...

Re: HP Z200 PSU Delta DPS-320KB-1 DEAD



@R_J: I already ordered the IC, caps and resistors, that you mentioned. The IC was difficult tot find (mostly sold out), had to order it in Germany.

I will give it a go........