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?
Milio034
Member
Last Activity: 04-24-2024, 01:56 PM
Joined: 09-02-2021
Location: Limburg
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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?Leave a comment:
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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.Leave a comment:
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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...Leave a comment:
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Re: HP Z600 PSU Delta DPS-725AB Dead
One thing that crossed my mind to prevent PSU problems is: is it wise to pull the plug of the PSU when you switch off the computer after a days work or is it better to leave the PSU under voltage? Can't find any research on that.Leave a comment:
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Re: HP Z600 PSU Delta DPS-725AB Dead
I will try the trick with the bulb light, I think I still have one, somewhere.
I will look at your link how to connect the bulb in a right way.
The blown resistor has a length of 6 mm (without the metal wire). Strange is that a 5-band resistor with these values (brown-black-gold-gold-black) is not recognised by my RCC app. But lets give it a go with a value of 2 ohm....Leave a comment:
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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........Leave a comment:
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Re: HP Z200 PSU Delta DPS-320KB-1 DEAD
Thanks a lot momake for your extensive reply and helping me out in this challenge. I will desolder the big cap and let it test in our elektro shop. I am still a rookie on electronics. Used caps and resistors only for audio benefits. That was quite easy compared to this stuff.
I will come back in this thread as soon as I made some progress or new explosions ;-/.
Thank you guys!...Leave a comment:
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Re: PSU OCZ700MXSP no +5VSB
A hint: lookup the power IC for the 5V SB. It could be fried. There are data sheets in which you can find the standard layout of such a power swich. [url]http://www.datasheet-pdf.info/entry/TNY279PN[/url] (figuur 14).
Am also dealing with a blown safety resistor in my PSU and most likely also the power IC. I ordered a new one with some caps and hope to solve the problem. I will also check my diodes.
Succes and keep in touch!Re: PSU OCZ700MXSP no +5VSB<br /> <...ied. There areLeave a comment:
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Re: HP Z200 PSU Delta DPS-320KB-1 DEAD
Thanks R_J
Do you have any suggestion which wattage and voltage to use for the fusible resistor? The color code indicates 1 ohm, I guess.
At Farnell I found:
1. 1,1 ohm-250mW-250V
2. 1 ohm-3W-350V
3. 1 ohm-1W-350V
The main capacitor that connects tot R901 has a max voltage of 450V. Is this something to take into account?Leave a comment:
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Re: HP Z200 PSU Delta DPS-320KP-1 Dead
I marked the pins of the resistors 901 en 902 black. R902 (the light blue resistor) looks connected to pin 1 of the IC (EN/UV) and to the R901, right?...Leave a comment:
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Re: HP Z200 PSU Delta DPS-320KB-1 DEAD
Thanks a lot Per for the hint, I found something at
[url]https://pdf1.alldatasheet.com/datasheet-pdf/view/139813/POWERINT/TNY279PN.html[/url]
In my case it looks like the resitor on pin 1 EN/UV of the IC is a double resistor in serie, so R901+R902. Figure 15 looks quite usefull, hope to find the right values.Re: HP Z200 PSU Delta DPS-320KB-1 DE... In my case itLeave a comment:
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HP Z200 PSU Delta DPS-320KB-1 DEAD
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: New Members - please post your introductions here
Hi guys,
Nice meeting you. I love electronic equipment like computers and audio. Had my first BBC Acorn computer around '85. Am always in for some research on computer hardware problems.
I like to make things work again that most people bring to the scrap heap and extend there use period. Especially now with chip crisis going on suddenly refurbished is the word. Hope we can help eachother out some time.
Greetings,
Earthling
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