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    For a quick and easy solution PM wwf.

    For a quick and easy solution PM wwf.
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    Sticky: Do you have a link to the schematic in PDF...

    Do you have a link to the schematic in PDF format.
    The attached image starts to get pixelated when zooming in.

    I think you should be abled to donthe mux mod and keep the OSD.
  3. wyldcat34 The boards arrived today and I pulled...

    wyldcat34
    The boards arrived today and I pulled the suspect custom from one of my faulty Chase HQ boards, there were about five broken legs when I removed it.

    This was what the screen looked like...
  4. Thread: TMNT Repair Log

    by Kaizen
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    348

    Yep, what he said. I wanted to get some...

    Yep, what he said.

    I wanted to get some practical experience in designing PCBs so that was the main reason I drew up the schematic and did the board layout.
  5. Thread: TMNT Repair Log

    by Kaizen
    Replies
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    348

    The board will only do the the 512k 27C400. For...

    The board will only do the the 512k 27C400.
    For the larger eproms you'll need the board with the dip switches or jumpers to program them.
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    The PCBs arrived today, three days from putting...

    The PCBs arrived today, three days from putting the order through to delivery.

    https://i.imgur.com/59SPJY6.jpg

    I ordered 10 boards and received 11, I also ordered five Taito TC0070RGB custom...
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    I'm back on this again and have redrawn the...

    I'm back on this again and have redrawn the schematic using EasyEDA
    I'm having some issues with netlist errors on VCC and GND and was hoping someone coud take a look for me and see whats going on.
    ...
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    Final revision of the PCB layout done and boards...

    Final revision of the PCB layout done and boards ordered from JLCPCB.

    https://i.imgur.com/nUPRaAx.jpg
  9. Thread: TMNT Repair Log

    by Kaizen
    Replies
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    348

    K27 Mask ROM was replaced and some improvement...

    K27 Mask ROM was replaced and some improvement but still had graphics issues.
    Found the dip settings for testing the Mask ROMs and it indicated H4 and H6 were faulty.
    ...
  10. The gameboard is an IPM Invader, not original...

    The gameboard is an IPM Invader, not original Taito.

    https://www.ipminvader.com/index.html

    Too many possibilities to say exactly what's wrong with it from the photo's.
    Check the voltage (+5v)...
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    Are these the same spacing as the Space Invaders...

    Are these the same spacing as the Space Invaders 9060 RAM chips?
    Edit: I see you just need to go from 600 to 300 spacing.
  12. I'm happy to test them for you and if you have...

    I'm happy to test them for you and if you have one spare that need to be assembled I'd be keen on that.
  13. Last call for any interest in these, will be...

    Last call for any interest in these, will be putting an order through for the boards tomorrow.
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    Board layout is now done with some help from ...

    Board layout is now done with some help from Frank_fjs.
    I learnt plenty from the process and will order the boards next week.
    There's no difference in price whether I order 5 or 10 so I'll...
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    http://tansei.me/ca2/311/ 500 but I'm pretty...

    http://tansei.me/ca2/311/

    500 but I'm pretty sure they only sell to buyers in Japan.

    See the Similar Threads at the bottom of the page
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    Like with a lot of rare/obsolete chips, people...

    Like with a lot of rare/obsolete chips, people buy up and hoard the remaining chips then the prices go through the roof if they are even willing to part with them.
    What I'm trying to do here is...
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    Fujitsu MB14241 IC Replacement

    I have a couple of Taito 3-Layer PCB's that need a Fujitsu MB14241 IC.
    Supply of these have been running out and I can only find one supplier in Japan that still has some.
    I did a bit of research...
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    I need a new coffee mug... ...

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    This Is Why I'm Broke

  20. Flynn's image uploaded here... ...

    Flynn's image uploaded here...

    https://drive.google.com/open?id=1BWo0_XTDquR8aQTg9q_uJG16m5XoT2qr

    and here...

    https://mega.nz/#F!PBt01CII
  21. Thread: TMNT Repair Log

    by Kaizen
    Replies
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    348

    Awesome mate, thank you.

    Awesome mate, thank you.
  22. Thread: TMNT Repair Log

    by Kaizen
    Replies
    13
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    348

    TMNT Repair Log

    I had a TMNT PCB on the bench tonight, the video below shows the graphics fault.

    https://youtu.be/fh0SZ_KljOY

    I did a quick once over of the board before looking up the schematics and when I...
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    Play LAI Invader Wars

    I had a Midway (Taito stickered) L-Shape PCB in for repairs, it had a blown tantalum on the CPU board and was missing three of the sounds.
    The tantalum was replaced, I found a few faulty LM3900's, a...
  24. Any interest in Taito TC0070RGB Replacements

    I need a couple of these for my Chase HQ boards, just seeing if there's anyone else that's in need of one or two.

    https://i.imgur.com/8VaBnHx.jpg


    I'm going to send the PCB files off to the...
  25. Thread: Chase HQ DX

    by Kaizen
    Replies
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    Definitely, all the boards I have here have ram...

    Definitely, all the boards I have here have ram and other issues I need to sort out.
    Shoot me a PM with prices when you get time.
    It's near impossible to find the motor driver PCB's.
    I'll be...
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