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Myarc Geneve 9640 cards for sale/repair

Geneve Geneve 9640 Repair

56 replies to this topic

#1 InsaneMultitasker OFFLINE  

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Posted Sat May 26, 2018 8:48 PM

I have five non-functional Geneve 9640 cards.

 

For some time I've considered what to do with them.  I am not interested in investing my time to fix them and have decided to offer them to the community.

 

I obtained the cards during the late 1990s when I temporarily assumed Myarc responsibility from Cecure Electronics.  The cards came from Myarc and were never sold due to their inoperable condition.  Rest assured these cards are not customer cards.  You can read about the repair efforts in Micropendium articles from the period. 

 

The cost per card is $50.00USD + shipping. This covers my investment.  If you buy a card, you will need to source any missing parts yourself.  Schematics are available on WHT.  The cards will come with whatever chips are currently installed, untested with no warranty or guarantee of any kind. 

 

Last but not least, Richard and I have discussed the future disposition of these cards. We will not accept them for repair.  This is primarily an opportunity for those of you who want to own a card that you can learn from and/or repair yourself.

 

 

 

 



#2 Opry99er OFFLINE  

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Posted Sat May 26, 2018 9:53 PM

Damned tempting.

Thanks for offering these up. :)

#3 fabrice montupet OFFLINE  

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Posted Sun May 27, 2018 4:06 AM

Thank you Tim for this proposition, I'm tempted the come one of these lovely Geneve to life . And repairing is a fun challenge :-)
Do you have a picture of these boards? Can you tell me the shipping price to France?



#4 Ksarul OFFLINE  

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Posted Sun May 27, 2018 7:33 AM

I'd actually be interested in one of these. . .



#5 jwild OFFLINE  

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Posted Sun May 27, 2018 9:17 AM

I am inspired by many of you to learn more about the Geneve. I would be interested in one of these cards as well.


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#6 mizapf OFFLINE  

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Posted Sun May 27, 2018 9:54 AM

I know that real iron means a lot more than "just emulation" to many of you, but don't forget that you can easily get some experience with the Geneve on MAME (and then possibly consider to buy a real one).



#7 InsaneMultitasker OFFLINE  

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Posted Sun May 27, 2018 12:13 PM

Not to dissuade anyone, just bear in mind these cards will require work and attention.  Geneve cards have an internal layer which may require you to check continuity between points,among other things.

 

For those truly interested, please send me a PM to start the process.



#8 fabrice montupet OFFLINE  

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Posted Sun May 27, 2018 1:03 PM

Tim, I appreciate your cautions.   I am well aware that Genny has a 4 layers PCB, thin traces and proprietary components. But I like this challenge :-)
I send you a PM to confirm my interest.



#9 TI998owner OFFLINE  

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Posted Sun May 27, 2018 1:19 PM

Hi Tim,
I am interested in Non-Working card as well.
I also sent you a PM to start the process
Thank you for the causion note as well
TI998owner Lee

#10 InsaneMultitasker OFFLINE  

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Posted Sun May 27, 2018 5:07 PM

4 of the 5 are spoken for at this time. 



#11 ti99iuc ONLINE  

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Posted Sun May 27, 2018 5:30 PM

I would be interested in one in true but i am afraid if important components are missing, i understand good?

Edited by ti99iuc, Sun May 27, 2018 5:30 PM.


#12 InsaneMultitasker OFFLINE  

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Posted Sun May 27, 2018 6:06 PM

You understand good.  I am looking through my parts for untested components to incude with the card.  It will NOT have all components.

 

Here is a picture of the last available Geneve board.

 

Attached Files



#13 Swim OFFLINE  

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Posted Sun May 27, 2018 10:48 PM

I would just like to add to what the insane one has posted we really hope those that take on a broken Geneve have experience soldering/desoldering and tracing circuits point to point. For those that get a board and you find the PAL and/or gate array are fried please contact the insane one or preferably myself since I have the gate arrays and we'll make these limited parts available to you. I would make a suggestion and a tip to you all to just automatically refresh the power supply circuits with new regulators, electrolytics and don't forget the heat sinks. Standard practice is to replace the 16v electrolytics with 35v max. Take care when placing heat sinks that you don't contact a pad that may be close to the area of the heat sink. I have attached a pic of what a refreshed Geneve with the 64k fast RAM and video upgrade looks like to wet your appetites. ;)

 

2vskiol.jpg



#14 InsaneMultitasker OFFLINE  

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Posted Mon May 28, 2018 12:25 AM

Swim makes excellent points above in his post.  It reminded me to again mention that a case will be important to keep the Geneve from 'rocking' in the PEB.   With that a few words of caution for any Myarc card: 

 

If a Myarc card is placed into a hard shell case from TI, it is imperative that you remove or file down some of the nubs protruding from the inside of the rear case panel.  It is very likely you will short out the card if this is not done properly.  Also as Shift838 discovered, be careful with the heat sinks as they can rotate when tightening the screws, which can in turn short the regulator leads and fry the card.  You all know that the smoke must remain inside the card.  ;)



#15 InsaneMultitasker OFFLINE  

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Posted Mon May 28, 2018 12:59 AM

I was asked privately about the chips included with the other four cards so I am going to share a portion of my response here for everyone: 

 

The other sold Geneves are populated with a gate array,  9901, and 9995.  The Video RAM was present.  Beyond that, common missing chips are v9938, buffer logic chips, SRAM, and/or EPROM. Regulators and capacitors should be replaced.  You'll need a 2032 battery/holder.

 

I say this respectfully:  if you are not familiar with a Geneve and lack experience repairing boards of this type, my advice is to steer clear.  If on the other hand you wish to use this opportunity to learn and can deal with the challenges, then go for it. 


Edited by InsaneMultitasker, Mon May 28, 2018 1:02 AM.


#16 InsaneMultitasker OFFLINE  

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Posted Tue May 29, 2018 11:58 AM

All available cards have been spoken for at this time.  If one does come available, I will go to the next person on the list and inquire.   Thank you all for your interest.  



#17 fabrice montupet OFFLINE  

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Posted Tue May 29, 2018 4:09 PM

Thanks very much to you!  :-)



#18 InsaneMultitasker OFFLINE  

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Posted Thu Jun 14, 2018 4:23 PM

All cards have been shipped and/or received.

 

I have started looking through my other equipment: I may have one or two functional Geneve cards and various peripherals to sell at a later date.



#19 Opry99er OFFLINE  

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Posted Thu Jun 14, 2018 5:56 PM

I might be interested in a functional Geneve (with keyboard?). :D

Keep me in mind please, sir.

#20 BeeryMiller OFFLINE  

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Posted Thu Jun 14, 2018 6:17 PM

I would be interested in a 504K Memex if you or someone else had one.

 

Beery



#21 arcadeshopper ONLINE  

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Posted Fri Jun 15, 2018 12:16 AM

I would be interested in a 504K Memex if you or someone else had one.
 
Beery

Me too!

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#22 InsaneMultitasker OFFLINE  

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Posted Fri Jun 15, 2018 12:31 AM

I do not have any Memex or Myarc 512k cards.  They are certainly hard to find.



#23 fabrice montupet OFFLINE  

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Posted Sun Jun 17, 2018 4:00 PM

One among them is crossing the big ocean, I'm waiting it with excitation :-)

 



#24 fabrice montupet OFFLINE  

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Posted Wed Jun 27, 2018 12:43 PM

... I have received the Geneve 9640 today ! So happy  :-)

I will have some time soon to begin the restoration, I can't wait!



#25 InsaneMultitasker OFFLINE  

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Posted Wed Jun 27, 2018 1:46 PM

A reminder to everyone - do not take anything for granted.  Inspect the solder traces, the solder work, the sockets, etc.  Sometimes two memory traces are accidentally connected by stray solder.  Sometimes a socket is installed wrong.  Put on your best detective hat :)







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