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Thread: Xerox 6060 restoration

  1. #11
    Join Date
    Oct 2014
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    near frankfurt/m, germany
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    948

    Default

    Yes, that's Vincenzo. So the M24 owner club is getting bigger and bigger, and here in this forum is the center of the universe.

    Valerio, good thoughts about replacing the internals of the power supply. The original power supply repair task is very difficult, ok we have diagram and description, but the mechanical separation of low and high voltage part is a bad thing. If you want to analyze that psu, you have to get it out of it's chassis, need a long connection cable for the two parts of the PSU, fix both boards that they can't touch each other, be care full that you don't touch at the wrong spots, it needs some airflow, and you need some electrical load on the output connectors. That PSU is completeley dying if you power on without enough load. And you are dying if you touch at the wrong place.
    Last edited by 1ST1; June 30th, 2019 at 11:03 PM.

  2. #12
    Join Date
    Dec 2016
    Location
    South Carolina , United States
    Posts
    48

    Default

    @Valerio, from what your seller describes your computer, I believe mine has the same issue. Did you manage to sort your 6060 out and get her working again?

  3. #13

    Default

    Quote Originally Posted by Valerio View Post
    I have just bought this: https://www.ebay.com/itm/163740299177

    Attachment 54215

    Seller says it doesnít work - Iíll try and fix it - wish me luck!

    (itíll take a couple of weeks to arrive)
    What's the story? Did you get it up and running? What monitor did you use?

  4. #14

    Default

    Dear fellow Olivetti collectors,

    yes, I'm here. I'm on this forum from years. Strange because some of you who write I'm not "here" actually replied to my posts here more than one time.

    I'm not dead, yet!

    Strange. Also my large collection of M24, M240, etc. etc … everything works! For the power supplies, no problems on my side: I know how to repair them.
    Other topic are the motherboards: in this case spotting the issue, the failing TTL or LSI, is more complicate as you need to use a logic analyzer to track down the issue and then to desolder without damaging too much the motherboard.

    Repair a motherboard it's a long story and takes time and dedication. Anyway I've replacement parts for nearly everything.

    I can assure all of you that out of a few (less than 3 or 4) of all the Olivetti computers in my large collection (M10, M15, M22, M24, M28, M250, M250E, M280, M290, M300, M380 all models, P500, P700, P750, P800 etc.etc … everything works flawlessly.

    Last addition to my collection is a wonderful M24 dated January 1985 with Bios 1.1. That is probably the second most aesthetically beautiful M24 I've ever got in my collection! THe first one is an M24 SP that seems like new.

    The motherboard is like new, even no dust on it. And more unique than rare, the Varta battery is PERFECT! No spills. Seems to be purchased yesterday. I desoldered it, anyway, but I will keep it in the collection.

    Plastics are perfectly white. It also has the rare Toshiba floppy drives model 5401 with the vertical trap door. The keyboard is an ANK2462 with 102 keys with US Ascii layout and two intense cyan and orange special keys. The mechanic of the keys is the later version with red plastic, so it has a better mechanism and better touch. The keyboard is like new, also. No yellowing, all the locks are intact.

    Additionally I'm getting another (I already have 4 or 5) Olivetti M19, but this has a wonderful (and very rare) original color monitor (a CGA with DB9 connector), plus a working hard disk.

    Then I got an M111 (working but with dead backlighting), an M211 with an Error 6 from the Keyboard test (that I'm still tracking down to try to fix it) and a Philos Color 45 in working condition.

    My collection is growing … need to find another place to store it.

    Greetings to everybody, unless I'm dying before you can actually reply to this post.

    Vincenzo.
    Last edited by pevalcas; September 19th, 2019 at 08:54 AM.

  5. #15
    Join Date
    Oct 2014
    Location
    near frankfurt/m, germany
    Posts
    948

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    Hahaha! Wonderfull!

    I need to visit you one day. You have M22... Wow! Never seen a M19 with color monitor. (I got a M300-02 and M4 modulo 46 recently, nice little machines)

    Can you take pictures of your machines and put them on an album here in the forum?

    Are you also able to fix PSU for M380C/XP1, M240?

    democenter.jpg
    My wet dream would be to fill this room with your and my machines and retransform it into permanent exibition... This used to be THE demo center... (do you know this building?)
    Last edited by 1ST1; September 19th, 2019 at 10:42 PM.

  6. #16

    Default

    Hi Stefan,

    You are more than welcome to visit me. Some other Olivetti Collector came to see a part of my collection as it is spread in 3 places and not all in "ready to be visible" form.
    If you are in hurry to see it, you can start by watching the video of my fully functional Programma 101 on Youtube, searching for "programma 101 Vincenzo". I will try to post other videos but I have to fight with my unwillingness to post videos or images on the internet.

    But at least you can see pictures of one of my two Olivetti M22 on the site Vintage-laptops. The owner of the site, a Russian guy, wanted to purchase my Olivetti M22, he was so insisting. I resisted! But at least I took pics of the best Olivetti M22 of the two, with a working EL backlight! The other is severely damaged by a battery spill. I have all the replacement parts to repair it, but I have too many things in the pipe to do. I got it without power supplies and with one of the two motherboards and the memory board heavily damaged by acid. Hopefully I have a spare power supply, motherboards, memory board, LCD and floppy drive.

    I believe the two rarest items I own related to the M22 are the Olivetti M22 original manual (in english) plus original floppies (also in english) and the modem expressely designed for the weird expansion slot of the M22, with its software and manual. One of the floppies, the typical "Getting to know M22" was heavily corrupted when I received it, but I was able to reconstruct the damaged GWBasic program files. Heavy reverse engineering.
    You can actually see the software running in the front view on the Vintage-Laptops dot com website.

    I will send you by mail the pics of the M19 with color monitor once I have tracked down the keyboard not responding keys.

    Ciao, Vincenzo.


    My wet dream would be to work for the Museum of History computer in Mountain View (which I visited 4 or 5 times). Try to repair the Programma 101 they have in poor conditions and without too much "respect" to its importance in the computing world history in the first showcase shelf on the right. If I am unable to due to complex mechanic problem (belt dissolved or gears broken), bring it personalltly to the guys in Ivrea (Gastone, Sergio and Sandro) for repair. Finally bring it back and present it in a decent way as "the first personal computer of the history". A
    Maybe recreating the "tree of computers" like in the IBM advertisement, with the P101 on top and IBM PC at the bottom. Finallt add some more Olivettis to the exibitions. Like the Olivetti M22 (unfortunately not known), one of the rarest computers of the history or other computers who won the Compasso d'Oro, italian award for industrial design.

    I don't know what is this building but it reminds me an Olivetti headquarter, maybe the one in Germany (in Frankfurt?).

    Just to present all the versions of M24 I have, I need and entire hall of the museum.

    I still owe you some images of Olivetti floppy but I am lazy on that side. If you come bring floppies and you can copy what you want.

    Bye.

  7. #17
    Join Date
    Oct 2014
    Location
    near frankfurt/m, germany
    Posts
    948

    Default

    Why museum in US? We reopen Olivetti Frankfurt Demo Center in that building. If the space of original demo center is not enough, we take the complete ground floor including the rooms which have been the service center. We can also take the 1st floor if this is not enough, once housing the electronics workshops and training center. Still not enough, well... the whole building? Both towers... I have a friend nearby, didn't met him for about 20 years, but a few month ago, we met in supermarket and we are back to close contact now. Also he used to be apprentice with me there, started just a year after me, but he had the opportunity to stay several years after the trainig as a technician in "Appllication departement" where they custmized machines for clients. I think he also would love that idea...

  8. #18
    Join Date
    Aug 2017
    Location
    New York, Rome, London
    Posts
    108

    Default It works!

    Apologies for the long delay... other things got in the way of this restoration.

    Anyway, I received the Xerox 6060 I had ordered, and by some incredible luck a few weeks later I saw for sale a matching Xerox monitor - and not just any monitor, a black and white one! I really like monochrome white monitors, and Iíve never seen any monochrome monitor in a color other than green, so this was a great find. Now I just need to find an amber one to complete my collection

    67E20232-3B0F-480E-A784-5035440D63A0.jpg

    The 6060 is in great condition, just in need of a minor clean. The problem with it (it was sold as not working) was indeed the power supply. I am not an expert in switching power supplies and Olivettiís have a strange topology, using variable reactors (!!) and multiple transformers. After a few basic checks I determined that fixing it was not going to be quick or easy (for me) so I set about replacing it with a modern one, along the lines of my previous post in this thread.

    I used a Startech 300W ATX power supply, connected to an ATX breakout board with screw terminals so that it was easy to experiment with it. Most connections are straightforward, ie GND, +5V, +12V (without this, the keyboard wonít work), and -12V (without this, the serial port wonít work). The tricky one was the +15V for the monitor, as expected. I used the DC-DC boost converter from eBay that I linked in the previous post, which was supposedly rated at 2A. However, although it did work, it got very hot very quickly. The monitor draws around 1.3A-1.4A. I then switched to another DC-DC converter, based on the XL6009 chip (yes I know I said I didnít like variable voltage converters, but this one seems to work fine). It gets moderately warm but nothing too hot to touch, even after hours of use.

    67B4A991-370D-4046-B00D-39C29F2FBB6E.jpg

    Of course this is a temporary arrangement, and a few more modifications are needed to make it suitably permanent...

  9. #19
    Join Date
    Aug 2017
    Location
    New York, Rome, London
    Posts
    108

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    One problem, as I mentioned previously, is that the ATX power supply is deeper than the original power supply, so a direct swap just wonít fit.

    Attachment 57376

    However, by a very fortunate coincidence the internal PCB of the ATX will exactly fit depth-wise into the housing of the original one! Here is where it gets a bit messy. First I disconnected the (extremely quiet) 12V fan from the ATX supply PCB. The I cut off the wires going to the mains switch/socket, and I replaced them with two new wires ending with 6.3mm female spade connectors. I also disconnected the 110V/230V switch from the ATX housing, keeping the wires intact. Also, I cut off the cables that led to unnecessary power connectors (like the Pentium 4 4-pin molex, or SATA drive power), making sure to properly insulate the cut-off ends. Finally, I added brass standoffs at the corner of the PCB (using existing holes).

    Attachment 57378

    This was now ready to be fitted into the original housing. I drilled three small holes on the bottom of the housing so I could fasten the standoffs with some tiny screws (the is a hole in one of the corners so the fourth standoff cannot be screwed in). The power cables can be routed out of the housing from the gap at the back near where the 5V and GND heavy-gauge wires were screwed in. Itís quite fiddly and I wrapped the cable in ďgorillaĒ duct tape to protect them from the sharp edges of the housing. I also fastened the mains voltage selector between the grills with a couple of washers.

    Attachment 57379

    Now it was time to re-attach the front panel of the housing. Unfortunately I had to remove the slave IEC mains connector since it just would not fit with the new PCB in place. I later replaced it with a black plastic cover. I connected the new spade connectors to the original switch and closed the panel - done!

    Attachment 57380

    Attachment 57381

    Well, not quite done yet... the original power supply also provided power to the fan. I intend to replace the fan with a (quieter!!) 12V one, but in the mean time I need to power the existing (mains) one. This is easy - I crimped two 2.8mm female spade connectors to a mains cable, and this allows me to power the fan while I wait for the 12V one to arrive.

    4E00A5FC-30A0-4137-A2FC-C1D008DF4050.jpg

    The last step will be to integrate all the connectors and the voltage booster onto a custom PCB, which will make it much cleaner.

  10. #20
    Join Date
    Aug 2017
    Location
    New York, Rome, London
    Posts
    108

    Default

    It looks like most of the pictures in my last post did not upload correctly. Here they are again.

    Size comparison:

    C3EEE38C-766D-41AD-8A7F-80348B470353.jpg

    Adapted ATX PCB:

    0C306424-EE7E-42C2-B451-28BABCF9D2C5.jpg

    Back of the original housing:

    DAA4C351-990B-4A44-B237-F838D786AB9D.jpg

    Back of the original housing:

    765FC3D8-E83A-41A5-BFF1-71EAA24EEEB0.jpg

    73AC106C-76F1-417F-A2AF-4487DA40A2A6.jpg

    I hope the upload works this time!

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