I have a HP media bay drive enclosure with a 500g sata hard drive that just quit?? I get a message "the usb device not recognized?? I have connected my HD inside my computer and it works fine so the fault is with the enclosure?? I can connect a 30 gig laptop drive and it works fine. It sure sounds like a power supply problem any ideas what to look for?
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Re: External Drive Enclosure
yes, it sounds if some power rail has sagged out of limits. is this that hotswap wannabe on a HP desktop or is it the real (4 bay) thing here https://h30094.www3.hp.com/product/s...tno/661618-B21?Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....
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Excuse me while i do something dangerous
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Re: External Drive Enclosure
Its the hot swap for HP Desktop, a personal media drive that can be either used in a media bay or just used as an external enclosureComment
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Re: External Drive Enclosure
Like this oneAttached FilesComment
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Re: External Drive Enclosure
so open it and lets see the guts!
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Re: External Drive Enclosure
Thanks as soon as I get an opportunity I will post some pictures in the meantime it has a cooling fan and I am not sure it is spinning up?? could this cause the problem?Comment
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Re: External Drive Enclosure
unlikely - does it have a tacho output?Comment
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Re: External Drive Enclosure
I did check the fan and it do work. so your are right not likely the problem No tech output that I can see.Comment
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Re: External Drive Enclosure
As promised here is some picturesAttached FilesComment
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Re: External Drive Enclosure
nice.
plug the psu in,
and meter the voltage on the 2 things that look like regulators - u13 and u14Comment
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Re: External Drive Enclosure
U2 looks like a DC-DC converter with that big diode and inductor connected to it"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: External Drive Enclosure
U13 looks like BA33P reading left to right (with ground on top) Black on center pin, red on pin 1- 3.297v and red on pin 3 - 5.11v
U14 looks like CB18p reading left to right (ground on top) black on center pin red on pin 1 - 1.783v red on pin 3 - 3.296v I don't have a date sheet so not sure which pins are in or outComment
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Re: External Drive Enclosure
pin 1 is output - and they seem o.k.
they are 1117 compatable 3v3 and 1v8
i suspect the initial 5v is from the switching supply mentioned by agent24
so power-wise that only leaves the 12v to check.
i cant see any access to the connector solder-joints - best to plug it into a harddrive & meter the connections on the drive-side.
it's the wide-part.
did you try it with a 3.5inch drive, or a 2.5inch one?
2.5 wont need 12v.Comment
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Re: External Drive Enclosure
Reading 5.17v only. 12v is missing?? 3.5 inch drive will not work a 2.5 inch drive will work just fineLast edited by davg; 05-11-2014, 05:54 AM.Comment
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Re: External Drive Enclosure
then you found the fault - trace the 12v contacts back & see where they lead.Comment
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Re: External Drive Enclosure
Success!!! at least temporarily?? The fault is with a ribbon cable that connect the front and back boards. This cable has separated from the board with the sata connector dropping the voltage to that board. I am not sure if this ribbon cable was soldered to the two boards or just glued in place?? right now I have soldered it but it don't look pretty however it do work but sometime I get a message "the hard drive need to be formatted before use"Comment
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Re: External Drive Enclosure
maybe it's pulling too much current for the connections - see if the 5v & gnd have the same poor looknig connections.Comment
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Re: External Drive Enclosure
I just tried the original 500 gig 7200rpm drive in this unite and I am still getting "the usb device is not recognized" (The drive do work connected inside my computer) Also I but in a 250gig into this unit and it will work?? I have not re-soldered yetComment
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I going to modify the enclosure to except the new USB 3 interface
The 3.5 enclosure do not have internal switching power supplies and use a small switching wall wart power supply really
I need a cd rom drive for my new computer and do not want to use a 2.5 cd rom drives
The switching power supply in the old enclosure has nice heat sinks and has a cooling fan in the enclosure that is the main reason why I want to repurpose for this project
https://www.ebay.com/itm/231205428647
I will post some pictures of it when I get the usb 3 to IDE... -
Hey ya'll this is my first post on here. I recently aquired a used/broken 2019 mbp 16 a2141 with the 820-01700 board. Seller told me that the laptop needed a new lcd. However upon doing some troubleshooting i found out the lcd is fine.
Laptop boots like a normal, plays chime, touchbar lights up however there is no image on the internal lcd. If i connect and external monitor while its already on, nothing happens and no image is displayed on external. However if i restart or boot the machine while its plugged in, the external then works and a backlight is now visible on the laptop.... -
I had been using this hard drive for a while, and it worked fine only going back and forth between 3 computers.
Plugged it into an older computer that happened to have a really loose USB port. Light flashed once and died, never to be powered up again. Not sure if it's relevant that the USB port was loose.
Anyway, now it doesn't power up at all, it's been sitting on my desk for years and figured what the heck, nothing to lose as I'm not going to pay someone to fix it, maybe I can learn something from it.
Removed the case, figured I would look for anything... -
Hi everyone,
I'm in need of assistance with a Dell Precision 5820 Tower. The BIOS is locked with "Dell Security Manager," preventing access to the HDD-1 hard drive.
**Background:**
I recently purchased this Dell Precision 5820 Tower from a recycler who salvages equipment from abandoned office spaces. The computer was left behind by its previous owner and was password locked. Given that it can run Windows 11, I saw this as an opportunity to upgrade my setup.
**What I've Tried So Far:**
1. I accessed... -
So I've worked on dozens of HP and Dell laptops and have never encountered this before.
Steps taken in my usual process.
Reset security settings in the BIOS
Ensure existing HD comes up into the OS
Shut down the laptop and disconnected the main battery
Removed old M2 drive and replaced with a new 1tb Mushkin Temptest NVME drive. (I'm aware the bus is Sata III but the drive should still work at a slower speed right? Been my experience in other laptops)
Replace battery connector and close up the laptop
Insert my USB drive with my Windows 10 image I've...
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