Recent content by MaRC

  1. M

    Repair Log: CPS1 No Sound

    Only one capacitor is missing, and it's in the analog part of the amplifier harness, but the problem is with the digital part.
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    Repair Log: CPS1 No Sound

    CPS1.5 with poppulated audio part from donor board. But not all parts -Z80 has a 6 Mhz model installed.
  3. M

    Repair Log: CPS1 No Sound

    I connect the board to the TV, the volume is not high and the amplifier does not heat up at all. The original radiator is on it. It's not a B board- I have 87 in 1, and I ran the same SF2 CE from it in different regions, as well as other games - the behavior is the same. There is a random sound...
  4. M

    Repair Log: CPS1 No Sound

    I'll also write about the sound, maybe you can help. I bought a Street Fighter 2 CE kit on aliexpress. Upon arrival, it turned out that it was CPS 1.5 with the audio part transplanted from the donor cps 1.0. The sound worked fine at first, but disappeared after 10 minutes. If you let the board...
  5. M

    CPS1 Test Mode

    In Street fighter 2 CE, the test menu is enabled if you turn on the 8 dip C switch. Other games probably have taco menus too, I haven't checked.
  6. M

    Chinese 87 in 1 compatibility

    The seller has B+C kits again. I took the kit and tried it anyway with my 92631C-6 - it's too wide and one of the capacitors on the B board does not allow it to be fully inserted into the slot.
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    MVS Mv-1c Draining Batteries

    If everything is fine, how long should a new battery or a fully charged battery last? I have 3 mv1cs, and the new battery runs out in about a day on all of them.
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    Chinese 87 in 1 compatibility

    Currently, you can buy only B board on Aliexpress for $300. I have an original street fighter 2 CE kit with a 92631C-6 and a Dash Board with a 12 mhz processor. The seller on Ali doesn't seem to know much about what he's selling and says he's not sure if his B board will work with my A and C. I...
  9. M

    CPS1 Test Mode

    For neo geo, if you do not insert the cartridge, the test mode starts, where you can check both the buttons and the picture, and if you switch dipswitch, you can run the memory test. There is much less information about CPS1 on the Internet - is there something similar in it?
  10. M

    MVS MV1B/1C battery replacement

    So after replacing the faulty capacitors on the board, how long does the battery last? The fact that the clock is reset is not terrible, it's bad that the neobios region and console mode are reset.
  11. M

    Chinese CPS1.5 stereo without amp

    Almost all the boards that you order on aliexpress will be 1.5 versions with a homemade audio amplifier. I think if you write to the seller, they may not solder the amplifier, it's even easier for them. I wonder where they got so much 1.5 and why they don't sell them assembled with qsound and...
  12. M

    Chinese CPS1.5 stereo without amp

    Since no one could confirm the operability of the sound output without an amplifier on 1.5 boards, I did not take any chances and ordered a board with a guaranteed original audio amplifier for 20 bucks more.
  13. M

    Chinese CPS1.5 stereo without amp

    I am ready to replace all the capacitors on the 35-year-old device. Anyway, the only place I can get the board is from China. I don't need an amplified sound, I'll make a console - will I be able to get it with the CN5 if I remove the mono amplifier installed by the Chinese altogether?
  14. M

    Chinese CPS1.5 stereo without amp

    I want to make a consolized CPS1. I can only buy the board on aliexpress, and there is an 80% chance they will send the 1.5 version with a manually added audio amplifier and capacitors. On the NEO GEO M1C, the built-in amplifier can be removed from the board and a non-amplified stereo signal can...
  15. M

    Reverse engineering 161 in 1 cartridge to change Rom games

    I also had errors on almost all the boards on the third cartridge from time to time - try inserting the adapter card not all the way in, but with a small gap in the programmer. So flash it, make a dump and compare the dump with the original P file - if it matches, then everything flashed fine...
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