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atari-dna

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Posts posted by atari-dna

  5. Posted

    There are screws under the case of the power supply, if you pop off the rubber nubs you will find 2 phillips head screws that can easily be removed with a driver. Not all power supplies are the same design, some will require the Dremel method to access. Not all fuses will be in a holder either, some are soldered directly to the PCB inside the power supply. They should be updated (if blown) with a holder.

  7. Posted

    The fact that the red light isn't coming on makes me think that it may be the power supply is to blame instead of the switchbox. I've had issues with both bad power supplies and bad switchboxes... a bad switchbox won't show a picture, but the red light should still come on.

     

    See this thread for confirmation as well as tips on how to fix a bad box... http://atariage.com/forums/topic/199871-4-port-switch-box-broken/

     

    The 4-port gets a bad rap IMHO, I've used one for years with no problems (the bad switchbox I ran into came with a lot of miscellaneous Atari items.) Nothing wrong with a power mod for folks who want one, but it's not really necessary, and some of us prefer to keep our systems working in their original condition.

    I'm of the same opinion.

    I think you have a power supply issue. Voltage regulator 1 & 2 may be shorted out ,or A26 has failed, possibly MJE210s. No LED at all is a good indicator your system isn't getting DC. I have the parts if you want to ship the board, I could take a look at it for you as well. I just fixed a console received from eBay DOA with the same symptoms (but it was 2 port) and it was the power circuit, VR were internally bad. New ones fixed it real nice.

  17. Posted

    I'm interested in obtaining a 5200 diagnostic cart, the 1.1 version that the engineering manuals refer to. For that matter, Pete's Test cart too. Would it simply be best to get one of the 128-1 SD carts and upload the roms?

    Is there a source for these actual cartridges, like Best? Or are they prohibitively expensive?

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