Re: SNAP 4000 Power Supplies
 

You need to find a web server to store your pics on, then your link would look like

http:\\colon.polip.com\p1000868.jpg.

You can't just link from your hard drive, unless you are directing port 80 to your PC through your firewall...and I wouldn't reccomend that either.

There is a way to upload them to the forum as well, but I haven't done it personally since I have my own web server. Phoenix, could you enlighten us?

Re: SNAP 4000 Power Supplies
 

Down below the text box, there is an "additional options" section. In this section, select the "manage attachments" button. This will open a window. In the window, there will be a column of boxes where you can "browse" your computer for the file(s) you want to attach to the message. NOTE: Look at the key down in the bottom of the window, this will show you the file size limits and file types the forum allows for your attached files. There is also a box for uploading a single file from a URL, but I don't use this. There you have it, pretty easy.


As a side note dandrews, please do not provide too many details. And for those wondering why, it is not to keep the information from people, but to keep people from damaging their snap servers or worse, themselves. This is not a mod for people who do not know how to read a wiring diagram and know how to solder, etc. But if you give out too many details, someone who is not qualified will try it sooner or later and then when they get hurt or destroy their snap server, will be all kinds of pissed off at me, us, and/or the forum. The forum does not need this kind of problem nor do I want to see anyone get hurt. If someone thinks they can do it, they can get the information directly from me and I should be able to tell if they are going to be able to handle it or not.

Re: SNAP 4000 Power Supplies
 

Guess I don't qualify:D

Can't be fixed with a hammer :hammer:

Re: SNAP 4000 Power Supplies
 

LOL Dave...

Of course you are, sorta. You know someone who can do it for you...

Re: SNAP 4000 Power Supplies
 

Yhea, My eye site is not what it use to be.:(

Just have to dust off the old soldering iron I used for strain gage work, find some utectic solder 0.015". Then fire up the cutting torch and welder, that should fix it so I don't have to do the repairs.:D

Re: SNAP 4000 Power Supplies
 

Ok, I will have to resize the pic's then I will post.

And yes Phoenix, I will let you handle briefing anyone wanting to do a PS mod, I completely agree with your reasoning.

DA

Re: SNAP 4000 Power Supplies
 

Ok, lets see if this worked... two attachments.

and yes, the numbers on my VCR are still blinking. I never bother to set date and times on anything...LOL

Re: SNAP 4000 Power Supplies
 

If I remember the power output you told me in PM correctly, and looking at those heatsinks, I would figure a way to put a fan in with direct output from the power supply (meaning it will be on any time the power supply is on, which means all the time it is plugged in). Otherwise, it may run a little too hot. Hard to tell from just pictures, but I would suggest it.

Re: SNAP 4000 Power Supplies
 

Andy, that is exactly what I did. I removed the connection to take the pic, but it is the small white connector near the red +5 power wires. And as you say, it runs all the time the power is plugged into AC.

DA

Re: SNAP 4000 Power Supplies
 

Well, it is a little late for dandrews, but I just got informed by Northwest Tech they have now released a direct replacement power supply.

http://www.northwesttechnical.com/in...oducts_id=1190

I looked it over real close, and I am a qualified electronics technician, and it looks like a decent setup to me. I read over the installation instructions and it does look like the average joe could do this replacement pretty easy, which is the real issue.

There are no OEM replacement power supplies available, and I have looked high and low.

Power supply repair can cost you more than the whole unit is worth.

I looked at other replacement open frame dual voltage power supplies, but they are very expensive (for the ones that will work) and still require some soldering and mounting modifications (no easy task).

I have myself done an ATX/AT power supply conversion (and told dandrews how to do it here), but this requires plenty of soldering, cutting and hacking of the power supply case, and is a pain in the arse to mount. It is NOT and easy task and is NOT for the unqualified.

The bottom line here is, if you are not qualified to do the ATX/AT mod, or get someone like me who is qualified to do it for you, then this is really the only option you have left that I am aware of. It might seem expensive, I know it is a lot of money to me at least, but if you look at what Adaptec charges for SNAP Server parts, or compare to other direct replacement options, it is not so expensive at all.

There you go. Don't say I never told you about it, and kept the information to myself.

And No, I do not work for Northwest Tech (they are at least 300 miles away from me), nor have I been paid to "advertise" their products as some have accused before. I am just another SNAP user trying to pass on information available to me for you to use as you will. Given the difficulties with having a bad SNAP 4000 power supply, this could be a salvation for someone.

Re: SNAP 4000 Power Supplies
 

Well, that is an answer for many who want to upgrade to larger disk or replace a bad supply in an existing system. I am a bit concerned about the amount of current the unit can supply on the +12 rail. However, they seem to think it will drive large size drives. The site even talks about a 2TB SNAP. That would be some pretty big drives for sure.

I will stick with my ATX mod... and thanks to Phoenix32 for the quick lesson.

Re: SNAP 4000 Power Supplies
 

No problem, always glad to help...

Re: SNAP 4000 Power Supplies
 

bump

Re: SNAP 4000 Power Supplies
 

Hi There,

Is it possible to get the full details of what a replaccement PSU for the SS4000 needs to be?

One of the guys on this thread mentoined that it could be possible to buy an OEM or standard version that would require less modification?

I want to try to buy one that will fit before I attempt the AT power mod, even then I will see if I can get someone qualified to do it, (I don't like messing around with Power I had a damaging experiance with a 9v battery on my tounge, thx to my older bro)


I think I am having the same PSU problem with a snap 4000 as Phoenix32, only 2 or 3 of the 4 drives will come up once booted and which drives appear is kind of random. it sounds like the exact problem on this thread.

eg. I power on and once booted I log in to find Drive 1 & 2 are up, then on the next powerup I get Drives 1, 3 & 4.... also sometimes the unit drops off the network so I am going to discosnncet all but 1 of the drives to see if it runs reliably before I do anything...

This unit has been a troublsome Snap for My technical director from just after 2 years operation, My Co distributes these suckers but this one is one that we used internally... we just thought it was a mainboard problem? and finally on the last clean up he decided to throw it out... swoop - like a seagul onto a stray chip at the beach!

Any assistance is greatly appreciated!

Re: SNAP 4000 Power Supplies
 

Phoenix32 posted a lnk http://www.northwesttechnical.com/in...oducts_id=1190 That has made a replacement PS. Not sure on the capacity but should be susfficent for most applications.

Yours is the clasic case of a PS problem.

Re: SNAP 4000 Power Supplies
 

It looks like Northwest Technical has started selling power supplies for the 4000 on eBay. Just do a search for snap 4000. Currently they have one up for $150 (shipping is extra). That is, if no one else bids.

Re: SNAP 4000 Power Supplies
 

When I went to that link i got one of these:
Sorry, the product was not found.

I will have a look on ebay but $150+ freight to Australia would screw me...

I have a chat with a few dudes here to see what they can do...

Re: SNAP 4000 Power Supplies
 

That one of the reason Phoeinx32 used a old ata ps, besides he wanted a little more reserve to spin up larger drives.

Re: SNAP 4000 Power Supplies
 

Yup Yup

Re: SNAP 4000 Power Supplies
 

I had a power supply fail on my Snap4000 and so I bypassed it (and the central controller circuit) matching the color coded wires from a 425W ATX power supply. For now I don't mind that the PSU would sit outside of the SNAP's case because my priority is to perform an emergency transfer of my data.

I did short the green wire on the ATX PS to get it to remain powered on per the Wikipedia (http://en.wikipedia.org/wiki/ATX):

At first I hadn't recognized the need to bypass the control circuit and that resulted in sporadic power up and down. It now powers up but only the System light is blinking. Very consistent about once per second. The other three lights are off (no Link light, no Drive light, etc).




1 Snap 4000 - bad PSU, with 4x320 Seagates, Raid5

Re: SNAP 4000 Power Supplies
 

I still have only the System light blinking... hoping it is performing a very looooong diagnostic before allowing external connections to the box. :-/ I know, pretty optimistic.

Maybe there is something special about the front switch hookup purple/black/brown wires that are critical for mboard to operate. I will check the mod PSU photos from Phoenix and hope I can figure something out.

Re: SNAP 4000 Power Supplies
 

I let it run for 24 hrs, but only blinked the System light. Probably a couple wires that tell the mboard some kind of instruction. Ah well.

Re: SNAP 4000 Power Supplies
 

Hello, you need to check to see if you are getting the proper power to your mobo. Use a volt meter to make sure you are getting power. There was somebody here that successful bypassed the small power control switch board, but you will have to search the site to find it.
Do you have the directions for installing a new PSU for the Snap4000? Or are u trying to figure it out on your own?

Is the green wire from your new ATX PSU grounded to the rail ?
Take the green wire that goes to pin14 on the main ATX 20 pin connector and attach to the ground rail of your new power supply. This will make your new ATX PSU always on which is needed.

Snap4000 old OEM PSU are on always. Even if you shut them down the PSU is on. The only way to turn the OEM PSU off is to unplug the power cord. That's why the new replacement PSU has to have the green wire grounded on the rail to make it always on.

Good luck!

Disclaimer: With anything there are risk involved. Trying anything or doing anything that somebody like myself might subject or write about is at your own risk and I take no responsibility for any damage that may have been caused by it.
So, be careful and know that there are risk involved that only you are responsible.

Re: SNAP 4000 Power Supplies
 

Thanks, I will try a volt meter to be sure.

The ATX PSU side of things is working fine so far. I have no reason to expect it isn't getting power to the mboard but it is quite reasonable to check.

By having it bypass the small power control switch board, I also decided to power the hard drives directly from the ATX PSU. It could be an indirect issue related to that, no power to network port on the Snap, or due to the few wires that feed from the SNAP power switch to the mboard still (perhaps requires a similar purple-to-brown grounding to rail trick there, but more nervous about trying that).

I have scoured the Internet tubes but I don't find any specific instructions about doing this, so pretty much trying to figure this out on my own. It seems like a replacement PSU would have the same problem... but it might be they've solved a couple of [proprietary] challenges with the SNAP that aren't obvious in the description/pix.

Re: SNAP 4000 Power Supplies
 

I double checked that the voltage is getting to the mboard fine (5v on the red and 12 on the yellow).

I still also have two wires going to the mboard from the small power control switch board. I guess these are my only hope for an repairable scenario. A dark purple wire apparently outputs +4v, while the dark gray one seems to cycle 1.5v (to blink a [disconnected] Link/Drive activity LED?... i dunno).

Re: SNAP 4000 Power Supplies
 

We're you ever able to get your Snap 4000 back up and running. My PSU fried and I'm looking for assistance in getting up long enough to get the data back.

Re: SNAP 4000 Power Supplies
 

UPDATE: Though NorthwestTechnical was initially backordered due to apparent power outage on the east coast... They checked if I wanted to cancel, but quickly fabricated a power supply for me and sent it nicely packaged.

The instructions were foolproof and it really was straightforward installation. As I mentioned earlier, I initially just wanted to pull the data off. However, the build quality on the replacement PS was so good, that my trusty NFS 1.2TB Snap 4000 remains in my arsenal.

I am still not sure if Phoenix32 somehow told them how to produce this unit or what... but somebody did it right.

During the install I did discover that there were indeed some particulars about that purple wire that probably would have eventually yielded some results. But again.. for the price it was certainly worth having it handled for me without risking wrecking the MBoard --- especially now that it is enclosed and working like a charm.

Sorry I don't have the do-it-yourself specs as a result, but I am very satisfied with the decision and the purchase.