Hello, I am having HP Z800 1250w PSU Model is Delta DPS-1050db and it is not powering on. I found that IC901 is blast, does anyone know this IC number? it's 6Pin IC Just next to the 3 big Caps
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Re: HP Z800 1250w PSU not powering on
Hello,
Could you please upload a picture of IC901 so that we can help?
Thanks a lot -
Re: HP Z800 1250w PSU not powering on
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I know that the IC901 in the HP Z800 850W power supply is a TOP246YN and it is for the 5v VSB. This being a heftier PSU, the TOP249 sounds plausible to me. There could be more blown parts to this thing and also replace that cap next to IC901 if the PSU had a lot of run time.
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This specification for the HP Z800 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 Z800 boardview and Z800 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 Z800 is accurate, safe, error...09-12-2024, 03:36 PM
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This specification for the HP Z800 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 Z800 boardview and Z800 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 Z800 is accurate, safe, error...09-12-2024, 03:30 PM
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Hi all,
I have a HP Z800 with a defective PSU Delta DPS-850db (I bought it that way). First I would like to try to repair the PSU, but can't do this without any help.
There's no visible damage, except for a 6 pin IC in to220 housing, the whole front has blown out. Making it impossible to identify the chip. Sadly the blown of part(s) are nowhere to be found.
I'm hoping to find people who would could tell me t what kind of IC, IC901 is, it's mounted on an aluminum cooling bloc next to the 3 large capacitors. The silkscreen say's IC901.
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When plugged in, I found that the 3.3v/5v regulator was getting extremely hot, so I removed, next I found a short on the 3.3V rail. Removed the two 3.3v mosfets and found one of them shorted, but still the short on the rail did not clear. Then I injected voltage at that rail, and found out that U60400 the 2.5v rail was also getting hot. Removing it changed the short from 0 ohms to about 5-6 ohms, then I remove a bunch of other suspect components but that did...07-11-2025, 05:24 AM
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