Recent content by oguzog

  1. oguzog

    SOLD pcbs for sale

    Selling some original pcb's. nothing at the moment
  2. oguzog

    [Repair Log] Raiden II Repair #1

    Thank You! I do have one more Raiden II board. One custom chip has cut-off legs. Needs some work :) Soon i will put it on my bench :)
  3. oguzog

    [Repair Log] Hook (IREM) m92

    As much as working on and repairing pcb's is a pleasure, documenting the adventure is a real Fun Journey! Thank you!
  4. oguzog

    [Repair Log] Hook (IREM) m92

    Thank You! Thank You!
  5. oguzog

    [Repair Log] Hook (IREM) m92

    Thank You!
  6. oguzog

    [Repair Log] Hook (IREM) m92

    Thank You!
  7. oguzog

    [Repair Log] Michael Jackson’s Moonwalker

    Thank You!
  8. oguzog

    [Repair Log] Hook (IREM) m92

    Thank You. Will continue in summer (because my workshop is located in my balcony) :D
  9. oguzog

    [Repair Log] Hook (IREM) m92

    CONTINUE... Now when powering up the board … everything works correctly. The board is saved!!! Best Regards Oguz
  10. oguzog

    [Repair Log] Hook (IREM) m92

    CONTINUE... Next, I decide to replace the Fujitsu Palette RAM parts as well. I have the following equivalent RAM parts available: I remove the old RAM and install sockets. Now, when testing the old RAM out of circuit … they test as faulty. I install a new RAM part that passes the out of...
  11. oguzog

    [Repair Log] Hook (IREM) m92

    CONTINUE... Later on, I asked a friend who has the same board to check on his board, and he gets the same measurement, so there is no problem with these pins. On my board, I reflowed the solder on them just in case. I went ahead and reflowed the other GAs too. When testing the game again...
  12. oguzog

    [Repair Log] Hook (IREM) m92

    CONTINUE... 030 gfx2 020 gfx2 010 gfx2 000 gfx2 H1 H0 C3 gfx1 C2 gfx1 C1 gfx1 C0 gfx1 DA irem Then I had problems with 2 ROMs – both audio ROMs. SLO-A and SHO-A The ROMs are responsible for the playback of all sounds. These ROM comparison sites do not list results if...
  13. oguzog

    [Repair Log] Hook (IREM) m92

    Hello everyone, today I have another board on my desk which I purchased as “working” but while my board boots up, it has issues. Irem produced several models of motherboards, and this motherboard is M92. It is a 2-stack board, consisting of a motherboard and a ROM board. M92 does not have any...
  14. oguzog

    [Repair Log] Raiden II Repair #1

    CONTINUE... And now when I insert coins, I hear the sound of “ding”! Now the board works 100% – a happy ending. You can watch me test the board here: Best Regards Oguz
  15. oguzog

    [Repair Log] Raiden II Repair #1

    CONTINUE... Now I need fresh parts for this RAM but I don’t have it. It is 8K x 8 static RAM and has 28 legs. I take a look at a 28-leg RAM on one of the bootleg boards in my spare parts box and see that the pinouts are the same. I replace the ram on the left (U0611) with the one I...
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