Fwd: RE: (ASCEND) Max 4000 Power Supply

[Randy Martin <ascend@austintx.net>]

To all who might want to know:

Both the power supplies in the MAX 4000 are manufactured by

Digital Power Corporation
41920 Christy Street
Fremont, California 94538-3158
USA

Phone (510) 657-2635
Fax: (510) 657-6634
sales@digipwr.com
http://www.digipwr.com/

The upper (top) supply is model US70-421. I have not been able to find this 
exact model, but model US70-401 is a good replacement. The entire US70 
family of supplies uses the same chassis, so the unit will fit in the MAX. 
The specs for the 421 and the 401 are as follows:

421
---
+5V  7A
+12V 4A
-12V 1A
-5V  2A

401
---
+5V  7A
+12V 4A
-12V 2A
-5V  2A

So, you see, the only difference in the two supplies is that the -12V 
source is capable of higher amperage on the 401 than the 421.

The lower (bottom) supply is model US5100-245. I have not had any luck 
finding this particular supply in stock anywhere, but you can order them 
from a distributor, and they will call Digital Power Corp. who will in turn 
make the supplies. There might be a replacement supply for the 5211-245, 
but it would require a little work on the wiring harness as the replacement 
has screw-down terminals instead of connectors. However, the US150-105 
should work just fine. The specs for the two power supplies are as follows:

5100-245
--------
+5V  20A


150-105
-------
+5V  25A


I bought the US70-401 from

Power Plus Technical Distributors
21120 Vanowen Street
Canoga Park, CA 91303-2821


Toll Free: (800) 963-0066 (from Outside Los Angeles & Orange County, CA)
Phone: (818) 703-8088
Fax: (818) 704-8088
E-Mail: sales@power-plus.com
http://www.power-plus.com/

It was $95 plus shipping. I should have it tomorrow. I'll let everyone know 
how it works out.

If you go to www.digipwr.com, you can see a list of all Digital Power's 
products and an extensive list of distributors broken down by region. I 
would just start calling them to see if they had stock on the supply you 
are looking for.

To the guy from Europe who responded to the original email, Digital Power 
Corp. has a big European distributor:

Gresham Power Electronics
Gresham House
Telford Road, Salisbury
Wiltshire SP2 7PH

phone +44-1722-413-060
fax: +44-1722-413-034
info@greshampower.com
http://www.greshampower.com/

You should be able to order the power supplies from them.

Hope this helps everyone.

Regards,
Randy

Randy Martin
President
Austin Internet
512-485-7977
http://www.austintx.net/



>From: John.Missavage@chron.com
>To: Ascend@austintx.net
>Subject: RE: (ASCEND) Max 4000 Power Supply
>Date: Wed, 2 Feb 2000 12:10:05 -0600
>X-Mailer: Internet Mail Service (5.5.2650.21)
>
>We have had our m4k's for well over three years and have yet to have
>A failure. If at all possible I would like to know the vendor for the power
>supply. We are gradually moving towards ADSL but will never lose the
>M4k usage for a long time to come.
>Thanks in advance from the HOUSTON CHRONICLE.
>
>
>         John D. Missavage
>         Email: john.missavage@chron.com <mailto:john.missavage@chron.com>
>         Faxto: 713-354-3136
>         Voice: 713-220-7988
>       "How to make a Really GOOD Enemy of Pretty Nearly Everybody, or a
>Telecom Management Primer."
>
>
>
>                 -----Original Message-----
>                 From:   Paul M. Ledbetter [mailto:Ascend@austintx.net]
>                 Sent:   Wednesday, February 02, 2000 9:46 AM
>                 To:     ascend-users@bungi.com
>                 Subject:        (ASCEND) Max 4000 Power Supply
>
>                 Anyone had a 4K power supply fail?  What was the end damage?
>Were you able
>                 to find both supplies from a third party, or did you have to
>go back to Ascend?
>
>                 Ours appears to have failed big time and we have another one
>on it's way
>                 (Thankfully other suppliers besides Ascend have the one that
>blew), and we
>                 are wondering if anyone else had one fail.  Once you
>replaced the P/S, did
>                 the unit function correctly?  Did you ever figure out why it
>failed?
>
>                 Ours appear to have over-heated, but yet all of the fans
>"appear" to be
>                 free moving when spun by hand.  This unit has always done
>well, and never
>                 skipped a beat.  I hate to see it go down in flames like
>this, but after 3
>                 years, anything goes.
>
>                 ++ Ascend Users Mailing List ++
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