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About nick3092

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    Chopper Commander

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  1. I usually start cleaning with some 90% or higher isopropyl before moving on to harsher chemicals. I take old credit/debit/gift cards and cut them up to fit the slot width. Wrap around some thick paper (card stock works very well) and soak it with the isopropyl. Then work it in and out of the slot. The card stock is perfect as it's thick enough not to tear when wet, and the surface of it has a little texture to it. If you go the contact cleaner route, just make sure it's safe on plastics and quick drying. That should be noted on the can.
  2. It doesn't play 7800 roms because it's not a 7800 flash cart. It's a 2600 flash cart. When it's used in the 7800, the 7800 is running in 2600 mode.
  3. On your XE the voltage regulator was most likely in the external power brick. So the input is looking for a steady 5v. You can really use anything that supplies a steady 5v, which USB does. But on the Atari home consoles the regulator was built into the console itself. Generally speaking 7805s require 2-2.5v over the output 5v. So if you have a power supply that can provide a steady 7.5v, in theory you can use it and generate minimal heat with the regulator. Of course you could remove the 7805, bridge/jumper the input and output holes on the PCB and then feed 5v in to the console. As long as the supply you are using has enough amperage.
  4. PM Richard to get on the list of you haven't already. It's too hard to track through the thread who wants to buy one.
  5. Check the thread below. It starts out talking about the memory expansion, and then turned into people comparing their ECS innards. http://atariage.com/forums/topic/288947-ecs-program-expander-was-planned-in-brown/page-1
  6. As noted above, it was included with a 75/300 ohm RF switch box sold by radio shack. If you look at one of the pictures in this auction for an NOS switch box, you can see the little resistor packet inside the larger bag. https://www.ebay.com/itm/Radio-Shack-15-1268-A-TV-Video-Game-Computer-Signal-Switch-75-300-Ohm-UHF-VHF/264305808002 Assuming you were using the 75ohm coax for your antenna, you would have put the resistor across the two 300ohm screw terminals on the end of the box.
  7. The harmony would plug directly into the 2600. You wouldn't use this together with it. This just appears to be some kind of pass through device so you can easily swap out rom chips to play different games. The harmony is essential the same thing, but the games are files/rom dumps instead of chips.
  8. I don't think there should be an arbitrary cut off year. Whatever the hardware can do, it should do. Setting a limit would be like putting a Ford Pinto engine in a Lamborghini body.
  9. Most (if not all) digital stations use UHF, even if your TV shows the channel in the VHF range (2-13). So that station would have no impact/conflict on the VHF signal coming from your 7800, as it's actually in a much different frequency range.
  10. I always thought switching supplies by nature needed more filtering than just a big cap? That works good for the 60hz ripple on a linear supply. But I thought you needed a different approach for the high frequency and other noise/interference generated by a switching supply.
  11. That looks like the stuff. You don't necessarily need to get it online though. Pretty much any hardware or home improvement type store should have it locally.
  12. Super glue probably wouldn't last in this case. You might have better luck with a 2 part epoxy, like JB Weld. Get the regular stuff that takes 24 hours to fully cure, not the stuff that cures in like an hour (I think they brand that one quik weld). Generally speaking, the longer the cure time of the epoxy, the stronger the bond.
  13. Yes. Old power supplies are made using a power transformer, which is why they are so much heavier than newer switching power supplies that are all solid state. Transformers always put out higher voltage when there is no load on them. They are designed so they put out the proper voltage when the specified load is added. Newer switching power supplies are regulated and put out the exact voltage (or very close to it) regardless of load. The problem with newer switching supplies is they are electrically noisy compared to the old linear/transformer supplies. Which older electronics like the 2600 don't tolerate the switching noise because they don't have the proper filtering built in. If the filtering is done properly in the switching power supply, then it will work fine with older electronics. But as Osgeld mentioned above, there are a fair share of cheap supplies out there that are very noisy because the filtering is inadequate.
  14. He said the 14v supply was an "original". I'm assuming he means that it is the original Atari linear supply with no regulator in it. Which would put out about 14v with no load on it. It would not tax the regulator, as once it's loaded the supply drops to around 9.
  15. The ColUSB is still a worthy investment. Eventually something (most likely the capacitors) in your PSU will die. It's worth it to have a back up on hand. Or use it as the primary going forward. And while the caps (or other parts) can be replaced, it's a pain as you have to cut the PSU open, then glue/epoxy it back together.
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