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Thread: Video repair upgrade kits for A600 A1200

  1. #1
    One Does Not Simply Collect Amiga Hardware Amibayer! tbtorro's Avatar
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    Default Video repair upgrade kits for A600 A1200

    Selling composite video repair/upgrade kits for A1200 and A600. As some of you may know the bandpass filters and delay line components are custom and not sold anywhere, so if they get damaged by capacitor leak, or heat (during soldering for example) then your composite video will suffer or disappear.

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    The solution is a newer and better SONY encoder chip with a small adapter PCB, that has these filters built in, so the external custom filters are not needed anymore and you can restore a decent video output. Main symptoms of external filters dying are color bleed and ghosting. On modern LCD screens the color bleed and ghosting is more noticeable, on CRT screens is less important (IMHO). Furthermore the newer SONY video chip also has S-VIDEO output so you can also solder a socket to the S-VIDEO pins if you prefer that video output type for an even better picture. This kit will also improve the composite signal somewhat - but please don't expect miracles - it'll be still a composite output.

    Before: After:
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    Installation:

    R1: 16K R2: 47K C1,C2: 100nF

    Remove the old chip: Not connected pads: Solder connected pads: Solder top components: Finished installation:
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    PCB design is by myself (tbtorro) and the original circuit idea is by Daniel Tufvesson. You can read more about the project here. The sale is for the components and the adapter only, won't be able to provide support.

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    I'm asking 12 per kit + PP fees + shipping.

    Shipping to Europe is 4.60€ unregistered parcel at your own risk. Or 17.20€ registered.

    As per forum rules: If you only write "Interested" on the thread, nothing will happen until you send a PM. You need to send a PM (Personal Message) with how many kits you need and your address exactly as it should show on the parcel.

    Feedback: Please leave feedback as per the site rules after you've received your stuff. Here is a guide how:
    http://www.amibay.com/showpost.php?p=60784&postcount=3

    Please have a look at my other new Commodore chips/parts listings:
    040-to-060-Adapter-professionally-built-060-Rev-6-CPU
    A3640-Rev-3-3-card-NEW-professionally-built
    Motorola-68060-Rev-6-(71E41J)-CPUs-NOS
    NOS-MC68030RC50C-(latest-rev)-CPUs
    Full-GAL-set-and-sockets-for-A3640-A3660-CPU-cards-NOS
    16MB-64-pin-RAM-GVP-compatible-NEW-design-with-warranty
    AGNUS-8372A-PAL-chips-(318069-02)-NOS
    Amiga-1200-original-KS-3-1-ROM-sets-NEW
    Fat-GARY-(390540-02)-for-Amiga-3000-4000-NEW-chips
    RAMSEY-(390541-07)-for-A4000-A4000T-A3000T-NEW-chips
    Super-BUSTER-chips-(390539-11)-brand-new-tested-NOS
    A3640-CPU-Cards-Rev-3-2-upgrade-chips-new
    Service-for-Amiga-4000-3000-2000-1200-600-A3640-A3630
    Last edited by tbtorro; 9th November 2018 at 16:06.
    cє<

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    supaduper's Avatar
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    Declare interest in x4 kits

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    Amibayer! timtheloon's Avatar
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    Very Interesting



    I've got a A600 motherboard where the component that is going across it IC in the picture has come off would this be the reason why I'm not getting an Image?

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    One Does Not Simply Collect Amiga Hardware Amibayer! tbtorro's Avatar
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    Quote Originally Posted by timtheloon View Post
    Very Interesting



    I've got a A600 motherboard where the component that is going across it IC in the picture has come off would this be the reason why I'm not getting an Image?
    Nope, that is just a decoupling capacitor to help with noise. You should still have a video out. If you don't then you either have capacitor corrosion damage or faulty delay lines (as explained above) or both.
    cє<

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    This just handles the composite video out, right? If you don't use the composite (with an Indivision or video card say) this doesn't do anything for you? Or would I need it for something else as well?

  6. #6
    One Does Not Simply Collect Amiga Hardware Amibayer! tbtorro's Avatar
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    Quote Originally Posted by Pgovotsos View Post
    This just handles the composite video out, right? If you don't use the composite (with an Indivision or video card say) this doesn't do anything for you? Or would I need it for something else as well?
    Only for composite.
    Last edited by tbtorro; 15th March 2018 at 18:41.
    cє<

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    Pgovotsos's Avatar
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    Quote Originally Posted by tbtorro View Post
    Quote Originally Posted by Pgovotsos View Post
    This just handles the composite video out, right? If you don't use the composite (with an Indivision or video card say) this doesn't do anything for you? Or would I need it for something else as well?
    Only for composite.
    Thanks. Sorry for the stupid question. I wanted to make sure.

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    I'm assuming you would need a different chip for NTSC Amigas, since the document says the bandpass filters in the original circuit have different values and the filter is internal to the chip?

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    Interested in two kits.

  10. #10
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    Received with thanks, super fast posting !

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