Sega Saturn DEV HARDWARE

Discussion in 'Sega Saturn Programming and Development' started by Viper, Apr 19, 2011.

Page 4 of 4
  1. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    Regarding this, as I stated before, the sticker on the back should state 85-132V. This is the case with my USA model, it was the case with Legit's Japanese model, and it is stated (and illustrated) in both the Japanese and English manuals (the latter specifically mentions USA and Europe).

    If anyone still doubts this, I just dug my Sophia out of storage to take a photo. You'll see the step-down transformer I use to power this operates at 110-120V.

    [​IMG]

    Here's the US/European manual:

    [​IMG]

    And guess how many countries run 135V mains? Yup - none! There are countries running 127V and countries running 220V, but none use anything in between... with the exception of a couple of countries with rather dodgy 220V supplies!
     
    retro, Jul 18, 2011
    #61
  2. Druid II

    Druid II Officer at Arms

    Joined:
    Jun 6, 2006
    Messages:
    3,600
    Likes Received:
    101
    The 85v-135v thing is just a voltage fluctuation protection. It's a normal 110v (+/- 25v) power supply. No countries actually use those values.
     
    Druid II, Jul 18, 2011
    #62
  3. dj898

    dj898 Site Supporter 2015

    Joined:
    Mar 14, 2004
    Messages:
    3,205
    Likes Received:
    15
    Location:
    Down Under
    ummm... AU runs 240VAC,,, ^ ^
     
    dj898, Jul 18, 2011
    #63
  4. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    I know - so does most of Europe! What I meant is that those are the middle extremities. There are countries running 100V, 110V, 120V, 230V, 240V...... but the middle numbers are 127V and 220V, with no countries running mains voltages between those two values (apart from those with shocking fluctuation!) ;-)
     
    retro, Jul 19, 2011
    #64
  5. vectrex_rox

    vectrex_rox Enthusiastic Member

    Joined:
    Oct 11, 2008
    Messages:
    584
    Likes Received:
    0
    Location:
    Europe
    received the sophia today ... first issue to solve is check the power supply whose T5A fuse is busted ...

    here are some inside pix:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
    vectrex_rox, Aug 4, 2011
    #65
  6. Druid II

    Druid II Officer at Arms

    Joined:
    Jun 6, 2006
    Messages:
    3,600
    Likes Received:
    101
    Oh, so that's where that 1.003 bios dump came from.
     
    Druid II, Aug 4, 2011
    #66
  7. vectrex_rox

    vectrex_rox Enthusiastic Member

    Joined:
    Oct 11, 2008
    Messages:
    584
    Likes Received:
    0
    Location:
    Europe
    Yes its 1.003 lets pray for tomorrow ;)
     
    vectrex_rox, Aug 4, 2011
    #67
  8. vectrex_rox

    vectrex_rox Enthusiastic Member

    Joined:
    Oct 11, 2008
    Messages:
    584
    Likes Received:
    0
    Location:
    Europe
    installed a fuseholder + new fuse ... power supply is working (at least in idle mode)

    will test it this evening !!!
     
    vectrex_rox, Aug 5, 2011
    #68
  9. Jackhead

    Jackhead Moderator Staff Member

    Joined:
    Apr 3, 2008
    Messages:
    2,090
    Likes Received:
    202
    Location:
    Germany
    Hope you will get the unit working again my friend.

    And thx retro for the pics. I belive you! ;-)

    Can anyone confirm that the Cartdev rev.b works with the MD1 psu?
     
    Last edited: Aug 5, 2011
    Jackhead, Aug 5, 2011
    #69
  10. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    Hehe! ;-)

    Read the manual - it'll tell you the spec for the PSU (think it's 9.2V 1.2A negative centre off the top of my head - so don't use anything that gives less current), but you're going to need to read the manual for the correct boot-up procedure.
     
    retro, Aug 5, 2011
    #70
  11. Jackhead

    Jackhead Moderator Staff Member

    Joined:
    Apr 3, 2008
    Messages:
    2,090
    Likes Received:
    202
    Location:
    Germany

    I do! But finding a 9.2V/9V psu with 1.2A ist near impossible. So my first thinking was using the MD1 PSU with 10V 1.2A. And of corse i read the boot sequence. But before i boot ... Sega stuff is very special with voltage :)
    So im sorry if my asking is, show me what i can use.
     
    Last edited: Aug 5, 2011
    Jackhead, Aug 5, 2011
    #71
  12. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    No it's not. There are several on eBay, and any decent electronics wholesaler will have something, too. 9V 1.2A is very common.

    If in doubt, see if it has a regulator. If it does, look up the datasheet for the regulator and see what the highest value it can tolerate is. You have your answer.
     
    retro, Aug 5, 2011
    #72
  13. vectrex_rox

    vectrex_rox Enthusiastic Member

    Joined:
    Oct 11, 2008
    Messages:
    584
    Likes Received:
    0
    Location:
    Europe
    power to the hardware ;)

    all leds on .. cd drive is seeking

    and tomorrow i seek the AV cable ;)

    [​IMG]

    [​IMG]
     
    vectrex_rox, Aug 5, 2011
    #73
  14. Druid II

    Druid II Officer at Arms

    Joined:
    Jun 6, 2006
    Messages:
    3,600
    Likes Received:
    101
    Thanks for posting all those pictures, I've yet to see any other pictures from the insides of that dev box.
     
    Druid II, Aug 5, 2011
    #74
  15. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    Err, there have been loads! There were certainly some of mine up before... and Legit probably took pics of his way back when! I think Kev had some on the original site, too.
     
    retro, Aug 5, 2011
    #75
  16. Druid II

    Druid II Officer at Arms

    Joined:
    Jun 6, 2006
    Messages:
    3,600
    Likes Received:
    101
    The only ones I have are partially covered and like 100x100px big.
     
    Druid II, Aug 5, 2011
    #76
  17. bart_simpson

    bart_simpson Intrepid Member

    Joined:
    May 13, 2011
    Messages:
    632
    Likes Received:
    1
    Location:
    UK
    What laser type do they use?
     
    bart_simpson, Aug 6, 2011
    #77
  18. retro

    retro Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    10,333
    Likes Received:
    311
    Location:
    UK
    They have a special drive, and not a very reliable one at that! I can't remember what diode - probably similar to early Saturn retail, i.e. JVC.
     
    retro, Aug 7, 2011
    #78
  19. dutchconsolefreak

    dutchconsolefreak Peppy Member

    Joined:
    Sep 8, 2005
    Messages:
    315
    Likes Received:
    3
    Location:
    Amsterdam
    @vectrex_rox

    Does the sophia work?
     
    dutchconsolefreak, Aug 12, 2011
    #79
Page 4 of 4

Share This Page