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Re: Mk 30 and 31B service

 

Hello,

I'm Craig, an SAE, GAS, and SUMO nut. I have rebuilt several XXXBs, IIICM, 2400s, a 2600, along with many straight forward repairs. I was supposed to have been put on Jim's SAE repair list but his website is gone. I know Jim is still around because I bought a bunch of SAE knobs from him just last month. I own many SAE, GAS, and SUMO pieces myself.

Anyway I can do whatever you need to have done, repair or complete rebuild. Rebuilds are completely stripped, cleaned, and rebuilt using metal film resistors, Nichicon capacitors, ceramic capacitors replaced with film capacitors, etc. I try to use parts that would be used today if these units were built today. All new black hardware, new white plastic light reflector and filter on the B. I keep almost everything in stock except output transistors and main filter capacitors. After everything is complete I do the alignments using one of James Bongiorno's Sound Technology 1700B distortion analyzers that I got from him shortly before he passed away.

I'm in SoCal but these two units are relatively light so shipping shouldn't be that bad.

Craig


Re: SAE D102 Display Completely dead

 

¿ªÔÆÌåÓý

The display module had a tendency to burn itself up over time, losing one and eventually all digit segments. I bought a pristine D-102 (second version w/digital output) dirt cheap on eBay with a dead display. This was back in the early 90s when DAK owned SAE, and I was able to get display module with a modification bulletin from their last remaining stock. I remember opening a circuit trace, drilling two holes, and soldering a 10 ohm 1W resistor connecting the two ends of the opened trace. SAE/DAK's parts manager at the time, Gail, told me I called just in time as there were only a few modules left. I'd be willing to say there are alotta perfectly functioning D-102s with dead displays out there, with no hope of their displays ever working again. Sorry that I don't have better news to share.


On 7/30/2019 4:08 PM, davidaldridge8@... [SAE_Talk] wrote:

??

I just bought one, NO display they said. I don't have it yet. I have read the driver chip for the display is the likely cause. Could this be a power supply issue? Again, I have no idea yet what it will or will not due. I know there 2 fuses in the PS, one is a 1/4 amp. The other bigger. I don't recall. I downloaded the service manual. I am aware segments are known to go out these, but the whole thing? Any input would be nice. It's the piece in my rack I need. It even has 2 A502 amps I run in mono. Thanks, David



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======== LIST RULES ==========
This list has a set of rules governing the discussion topics so that we maintain the focus of the group.

LIMITED SALES OF ANY PRODUCT OR MERCHANDISE INCLUDING SAE STUFF

1) No UNSOLICITED direct offers of "FOR SALE" items allowed on this SAE-TALK list. This list is not an EBAY or Audiogon. Only in rare, special cases are sales allowed upon the PRIOR discretionary approval of the Moderator. It better be very special!!! Everyday SAE stuff sold on EBAY is not special.

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File : Searching the archives.doc
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Mk 30 and 31B service

 

Hello,

I have an SAE Mark 30 and 31B that I¡¯d like to have repaired. Is there a vendor list for SAE service? Or can anyone point me to a service? I¡¯m on the Eastern Shore of Maryland.

Thanks.
Jim M


SAE D102 Display Completely dead

 

I just bought one, NO display they said. I don't have it yet. I have read the driver chip for the display is the likely cause. Could this be a power supply issue? Again, I have no idea yet what it will or will not due. I know there 2 fuses in the PS, one is a 1/4 amp. The other bigger. I don't recall. I downloaded the service manual. I am aware segments are known to go out these, but the whole thing? Any input would be nice. It's the piece in my rack I need. It even has 2 A502 amps I run in mono. Thanks, David


Searching for Information

Joe Schaub
 

¿ªÔÆÌåÓý

Where can I find instructions on how to replace belts on a SAE c102?

?

Thanks, Joe

?


Re?:Re: Re?: James's Notebooks?

 

Gonna have ¨¤ look if I found Thomas email adres back.?


Le dim., juil. 21, 2019 ¨¤ 12:59, fauborgflorida@... [SAE_Talk]
a ¨¦crit :
?

So is Thomas on this forum?


As far as "secrets", no secrets last long in technology. Anything can be reverse engineered, and our friend and mentor has been dead several years. ?Patent rights are a different matter and James should have had an intellectual property (IP) executor for his estate to conserve his IP for his heirs. It probably fell to his attorney and the family to do the best they could with what can be complex issue.?
If anyone has any other leads, please share with all!
Thanks


Re: Re?: James's Notebooks?

 

So is Thomas on this forum?

As far as "secrets", no secrets last long in technology. Anything can be reverse engineered, and our friend and mentor has been dead several years. ?Patent rights are a different matter and James should have had an intellectual property (IP) executor for his estate to conserve his IP for his heirs. It probably fell to his attorney and the family to do the best they could with what can be complex issue.?
If anyone has any other leads, please share with all!
Thanks


Re?: James's Notebooks?

 

Indeed, the idea is great.... On one side...?
On the onder side... Publishing such pi¨¨ces of information can give ideas to the other designers.... And I don't know if Jim would agree with that... (if h¨¦ was still among us)...?
I know h¨¦ has some secrets concerning the BIAS circuitry of some amps...?

And, yes, your question is very interesting concerning all Jim's designs, sch¨¦mas and so on... Maybe should you ask Thomas Bongiorno... ? member of if Family, ¨¤ nefew I think... He got ¨¤ lot of stuff from Jim wen h¨¦ passend away... Like hats for example..?


Le lun., juil. 8, 2019 ¨¤ 2:53, fauborgflorida@... [SAE_Talk]
a ¨¦crit :
?

Does anyone here know what happened to James's engineering notebooks? They would be fascinating reading if collected and published.


James's Notebooks?

 

Does anyone here know what happened to James's engineering notebooks? They would be fascinating reading if collected and published.


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{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf410
{\fonttbl\f0\fswiss\fcharset77 Helvetica;}
{\colortbl;\red255\green255\blue255;}
\margl1440\margr1440\vieww17320\viewh9700\viewkind0
\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural\pardirnatural

\f0\fs24 \cf0 The following notice only applies to those that receive emails from this Yahoo group. Web only access users need not be concerned with this message.\
\
To all Yahoo Group Email access users:\
\
Members are responsible for managing their own email. If your going to go away for any long period of time, it is recommended you go to your Yahoo Groups account and change ALL OF YOUR access/reading to "No Emial" status for all the Yahoo groups you belong to. Upon your return, just set them back to the way they were before. The obvious downside of this is you miss all the messages on the groups while you are away.\
\
See the "No Email Procedure" below / bottom.\
\
If you fail to make these changes when you go on a long trip, your personal email account used to receive Yahoo groups email will become full, emails will bounce and your Yahoo account will automatically be suspended (not removed or deleted). What this means is that Yahoo groups as a whole will simply stop sending any emails to your email address. You will have to go through yahoo's email reactivation procedure to get things going again after you get done unclogging your email account. If this happens, do not bother the Moderators to fix this for you for we do not have that level of access to your account.\
\
Bottom Line: Members must do their part as part of the Yahoo Groups community and manage their own Email accounts properly. Moderators are not going to access member accounts and make the changes for you. Moderators (and co-moderators) are Volunteers with limited time and spend it all behind the scenes making sure the list is SPAM free as much as possible. They are the unsung Heroes in my book.\
\
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3) For each group shown, go to the far right under under "Message Delivery" column to the bar which show your current setting.\
\
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\
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File - Schematics&Repair.txt

 

Manuals, Part Cross References & Schematics...ect:



Repair/restore/rebuild Shops:


File - SAE_List_Rules.TXT

 

This is an automated message sent upon subscription and as a Monthly reminder.
Revised 6/17/04 Mark Gurries

======== LIST RULES ==========
This list has a set of rules governing the discussion topics so that we maintain the focus of the group.

LIMITED SALES OF ANY PRODUCT OR MERCHANDISE INCLUDING SAE STUFF

1) No UNSOLICITED direct offers of "FOR SALE" items allowed on this SAE-TALK list. This list is not an EBAY or Audiogon. Only in rare, special cases are sales allowed upon the PRIOR discretionary approval of the Moderator. It better be very special!!! Everyday SAE stuff sold on EBAY is not special.

2) If one wishes to SELL something IN RESPONSE to a request "I'm looking for", do the actual sales OFF this list.

3) We can talk about items posted for sale in a public forum (EBAY/AUDIOGON) as long as it is related to Q&A in the spirit of this list function (production history, design, modifications, cost history, possible problems with the products and technical stuff).

If this stuff gets out of hand, sales of any kind will be banned.

REPAIR SERVICES
Offers to do repair services or are allowed. However, all offers must be in direct RESPONSE to a request like "I'm looking for someone to repair...". Final discussions for actual work must be made OFF list. No SOLICITATION or independent advertisements allowed on the list. Repair Shops may post DIRECT weblinks to their place of business in the LINKS folder of this list website. If this stuff gets out of hand, it will be banned.

POSTING OF TECHNICAL INFORMATION
Offers to supply technical information or documentation are allowed. However, all offers must be in direct RESPONSE to a request like "I'm looking for someone who has a schematic too...". Final discussions for actual transfer of information must be made OFF list. No SOLICITED or independent advertisements allowed on the list. Unfortunately there is not enough disk space on the Yahoo list website to store all the technical information about Audio products we talk about. However, everyone is encouraged to post WEBLINKS to show where one can get documentation and information. This can include places that sell documentation. Weblinks are to be placed in the LINKs area of this list website.

USAGE OF THE FILES AREA
There are many folders containing information in the Files area. However space is VERY limited. At this time, people must obtain permission from a list moderator to post files in this area. We are trying to store information that is not publicly available or is very rare.

USAGE OF THE PHOTO AREA.
If you have some pictures of equipment you would like to post, this is the place to do it. However, space for these photos is shared with all the other files of this list. Keep the photo images small and compressed. Keep them to about 40K each. Moderators reserve the right to remove photos at any time as needed to manage the website disk space.

MESSAGE CONDUCT
Everyone must respect each other on this list. ANYONE with direct personal derogatory comments about another person in terms of them being a human being is not allowed. Technical debates, however heated, must not use foul language. Repeated offenses (they are accumulative) can lead to banning from the list. THE 10 Commandments of Email:

Thou shalt include a clear and specific subject line.

Thou shalt edit any quoted text down to the minimum thou needest.

Thou shalt read thine own message thrice before thou sendest it.

Thou shalt ponder how thy recipient might react to thy message.

Thou shalt check thy spelling and thy grammar.

Thou shalt not curse, flame, spam or USE ALL CAPS.

Thou shalt not forward any chain letter.

Thou shalt not use e-mail for any illegal or unethical purpose.

Thou shalt not rely on the privacy of e-mail, especially from work.

When in doubt, save thy message overnight and reread it in the light of
the dawn.

And, here's the "Golden Rule" of E-Mail:

That which thou findest hateful to receive, sendest thou not unto
others.


File - Parts & Manauls

 

Manuals, Part Cross References & Schematics..ect:



Repair/restore/rebuild Shops:


File - Searching the archives.doc

 

File : Searching the archives.doc
Description : A how to...plus some gotchas you need to know.