Topic: A/D board replacement for some early 722/744Ts

[trajhip2000]

in case you haven't seen the post on the SD support forum yet -

http://www.sounddevicessupport.com/viewtopic.php?t=344

Steve

[Ray76]

in case you haven't seen the post on the SD support forum yet -

http://www.sounddevicessupport.com/viewtopic.php?t=344

Steve

mind helping the ones who are not regg'd on there and paste what they are saying?

Sound Devices has determined that the analog-to-digital converter circuit board in 722 an 744T units identified below has the potential to intermittently fail. The failure condition manifests as "popping" noise or digital hash when using analog inputs. This is not a problem which gets worse over time, and it happens rather infrequently and does not happen on all units. Typically, a power cycle will clear the condition. The converters are most prone to the failure at 96 kHz sampling rates. The problem can occur at other sampling rates with less frequency. Sound Devices has seen only a handful of failures, but we will exchange ALL suspect A/D boards as a preventative measure.

Affected Units:

722: Serial numbers 470499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel. The "v14", etc. stickers indicate the sub-revision of the unit.
744T: Serial numbers 460499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel.

There are two options to resolve this issue:

1. We can send you a new A/D board and replacement instructions if you are comfortable replacing it. It involves removing the top and bottom cover, snapping the new board on, then replacing the covers.
2. You can send us your unit and we will do the board replacement here at the factory.

Please contact Sound Devices via phone or enter a case directly on our web site at www.sounddevices.com/contact_support.htm . Select "A/D Board Exchange" as the type. Sound Devices will contact you and send a replacement A/D board in the mail at no charge.

The new boards have identical frequency response, gain, etc. as the old ones. The only change is more robust digital communication from the A/D board to the DSP. The new, replacement boards are identical to what is being shipped in brand new units.

Thank you for purchasing Sound Devices products, and for your cooperation with this

[Ray76]

in case you haven't seen the post on the SD support forum yet -

http://www.sounddevicessupport.com/viewtopic.php?t=344

Steve

mind helping the ones who are not regg'd on there and paste what they are saying?

Sound Devices has determined that the analog-to-digital converter circuit board in 722 an 744T units identified below has the potential to intermittently fail. The failure condition manifests as "popping" noise or digital hash when using analog inputs. This is not a problem which gets worse over time, and it happens rather infrequently and does not happen on all units. Typically, a power cycle will clear the condition. The converters are most prone to the failure at 96 kHz sampling rates. The problem can occur at other sampling rates with less frequency. Sound Devices has seen only a handful of failures, but we will exchange ALL suspect A/D boards as a preventative measure.

Affected Units:

722: Serial numbers 470499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel. The "v14", etc. stickers indicate the sub-revision of the unit.
744T: Serial numbers 460499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel.

There are two options to resolve this issue:

1. We can send you a new A/D board and replacement instructions if you are comfortable replacing it. It involves removing the top and bottom cover, snapping the new board on, then replacing the covers.
2. You can send us your unit and we will do the board replacement here at the factory.

Please contact Sound Devices via phone or enter a case directly on our web site at www.sounddevices.com/contact_support.htm . Select "A/D Board Exchange" as the type. Sound Devices will contact you and send a replacement A/D board in the mail at no charge.

The new boards have identical frequency response, gain, etc. as the old ones. The only change is more robust digital communication from the A/D board to the DSP. The new, replacement boards are identical to what is being shipped in brand new units.

Thank you for purchasing Sound Devices products, and for your cooperation with this

thanks

no prob man.

requested mine today.
mine fell in that sector.

[trajhip2000]

quick response time from SD - I posted mine about 1:45 PM PST, and got a call from SD a little over an hour later, replacement will go out tomorrow.

Steve

[Tim]

sounds like it's a pretty easy fix though, that's good

[Ray76]

sounds like it's a pretty easy fix though, that's good

yep, sounds sorta like snapping a pci card in from the description on the phone with the support guy.
think ill sell the defective one on ebay
Tim, got the package today BTW, pure gold.

+T

[Tim]

awesome! enjoy...

[Ray76]

I will. I had no idea those mics were so tiny.

luckily though there isnt much in the way of "secular" music that i enjoy here, Europe is a veritable mecca for all things classical music.

its a way of life here.

[scb]

i'm in for this too i guess

[Ray76]

i'm in for this too i guess

I thought mine would be out of the kill  zone being that i just got it last week or so.

[MattD]

Ditto for me. Nick, didn't you do this? If it's as easy as a PCI card thing, I'll do it myself too.

[nickgregory]

Ditto for me. Nick, didn't you do this? If it's as easy as a PCI card thing, I'll do it myself too.

yup, simple as can be...hardest part is to get the case to line up on the nothches so to speak when you put it back to gether...but it basically plugs right into the top of the unit...breeze to do

[Diggin]

looks like I am in it too.
was pretty easy to take it apart so I will try it myself, if not they are only 45 minutes away

[marc0789]

slam away if you want, but the early returns seem to be consistent with SD history. Products with issues, but excellent customer service to address them as they come up. The Saturn of HD devices.

[Ray76]

slam away if you want, but the early returns seem to be consistent with SD history. Products with issues, but excellent customer service to address them as they come up. The Saturn of HD devices.

i have had no problems.

ill save you some money, just buy the 722 without the a/d and you can use my panel.

[Brian]

should i mention again that i have never had any problems with mine and absolutely love it?

marc, who are you....Bean jr. now  

[dklein]

722: Serial numbers 470499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel. The "v14", etc. stickers indicate the sub-revision of the unit.

holy crap - they're already on revision 16 !!!  If I were an owner I'd want to know what all those revisions were, or at least what revision was the first publicly released one.  That seems like quite a bit of afterthought for a relatively new device.

[Ray76]

722: Serial numbers 470499999999 and lower which do NOT have a "v14", "v15", or "v16" sticker directly below the serial number sticker on the back panel. The "v14", etc. stickers indicate the sub-revision of the unit.

holy crap - they're already on revision 16 !!!  If I were an owner I'd want to know what all those revisions were, or at least what revision was the first publicly released one.  That seems like quite a bit of afterthought for a relatively new device.

it doesnt matter to me what the revisions were particularly. as long as it does what it says its going to do and customer service is outstanding(and it is, btw) revisions dont mean much to me. course im not tech savvy and the revisions wouldnt make sense to me anyhow..

[marc0789]

The SD 722 will be heretofore renamed the.....Sound Devices MP-3.

[Lil Kim Jong-Il]

holy crap - they're already on revision 16 !!!  If I were an owner I'd want to know what all those revisions were, or at least what revision was the first publicly released one.  That seems like quite a bit of afterthought for a relatively new device.

Hardware revisions can be meaningless to the customer.  Sometimes they indicate a change in part count or reposition of a mounting hole.  Strict CM processes will reflect every tiny little change.  Also, you'd have to know the initial fielded revision to make sense of the number of changes.   I've never seen anyone ship hardware that was truely a first minor revision.

[Ray76]

The SD 722 will be heretofore renamed the.....Sound Devices MP-3.

Ah , just get a microtracker. er jb4

[dklein]

[Hardware revisions can be meaningless to the customer.  Sometimes they indicate a change in part count or reposition of a mounting hole.  Strict CM processes will reflect every tiny little change.  Also, you'd have to know the initial fielded revision to make sense of the number of changes. 

Thanks for the insight!

[Brian]

The SD 722 will be heretofore renamed the.....Sound Devices MP-3.

[MattD]

I got the board and replacement documentation today. I'll let you know how the replacement process goes.

[Ray76]

I got the board and replacement documentation today. I'll let you know how the replacement process goes.

That would be extremely helpful Matt, thanks.

The thought of it is intimidating me.

[MattD]

Replacement = easy ... but how the fuck do you get the tabs on the unit to line up with the slots and get the cover back on? Any tips from those who've done it? Please share!

[nickgregory]

Replacement = easy ... but how the fuck do you get the tabs on the unit to line up with the slots and get the cover back on? Any tips from those who've done it? Please share!

trial and error...takes a fair amount of time getting it lined up and once you do, it locks in tightly...

[MattD]

I finally got it. It required me to kneel on the damn thing to keep the tabs in place once I got them aligned. It took more force than I thought it would, but the top and bottom covers are strong enough to put that kind of pressure on them.

[scb]

i just switched mine.  board replacement was easy.  like matt said, putting the case back together not so much...

but hey, gotta love that you can stand on the unit to put it back together and not worry it'll break

[Ray76]

I dont have a VER sticker. I got mine about the same time you did Freelunch..

[MattD]

They sent me a v14 sticker for the back of the machine after I did the board swap.

[Ray76]

I just spoke with Justin again.. Here's the scoop.

He thinks my 722 should be fine and that it just didn't get a Vxx sticker on the back. Of course I must be certain.

From my notes, this modification was put into production on July 15.  Any A/D boards already manufactured were modified. When that occurs, a version sticker is put on the board.  Those boards then get assembled into units.  It seems that some 722's did not get the sticker on the back.

So it was suggested I open up my 722 and look for the sticker on the A/D board to make sure.  He sent some directions.. It wasn't too bad but one of my battery bulkhead screws didn't line up and I had to do some minor tweaking.  I have both the 14 and 15 stickers internally so I'm all set.  He said the 15 and 16 mods were nothing that would impact performance.

Ray, yours is probably okay. I'd give him a call to check your mfg date. Mine was built on 7/22.

Now, back to my crazy Schoeps active project...

Thanks Hoss.

Good man.+T

[Rick]

Well that was easy... Didn't even have troubles getting the bottom and top on.

[fozzy]

Well that was easy... Didn't even have troubles getting the bottom and top on.

no issues here either.

I don't think i needed the replacement though since there was already a 14 sticker on my AD board.  Oh well it only took 5 minutes.

What are the extra screws for?  I'm sending mine back but i guess folks were loosing them. 

[scb]

keep the screws.  you never know when you'll open it up again and lose one.  that's what they send them for

[nickgregory]

just did it...hell it was easier this time than before...try to doing this without instructions like I had to the first time

[CQBert]

Way to go Sound Devices...  Got mine this afternoon... nice instrucitons, pre-paid return envelope for old A/D...  Simple!

Got to tape now..

CQbert

[Ray76]

with the way military mail goes..ill have mine in about a month.

[BobW]

What are you guys doing with old A/D boards ? 

[Ray76]

What are you guys doing with old A/D boards ? 

youre supposed to return em. they send an envelope to return it.

Im going to keep mine. if its possible..

[CQBert]

Sent it back...