R.Cade

You nailed it!

FAFO... When have cheap clones from the East ever been stable or reliable?

It's anecdotal, but I had a very similar problem recently with my 800xl. It turned out to the the CPU. Random failures in the self test. Sometimes worked fine, sometimes not. It never ran more than 5 minutes without crashing. I was able to get a new one from Best. It's pretty inexpensive to just get a spare set of all the main custom chips in the XL while you can.

It works even in Win11, but it's sluggishly unplayable, even on good CPU and video card.

Yeah, name a price. It's not the buyers job to bid against themselves.

That's tough. Game stuff is everywhere in the cities. I was really overwhelmed while I was there. If we did not have a local guide, I would have gotten lost in Kyoto or Tokyo, never to be seen again.

Atari 600XL in Original Box System is new and unused. The plastic around the computer and the way the cords are wrapped show it was never used. The tape on the outside of the box has come off, and has some wear. Internally, the styrofoam was still taped, but I did remove this just to verify the contents where all there and unused. I could test it, but then it would be opened, so I have left it this way. For this reason (only) it is untested. If the buyer would like me to test it before shipping, I will do so and refund if it does not work, before I ship it out. This looks like the non-mylar mechanical keyboard variant, which is nice! Any other questions, just ask! Asking $180 + shipping.

All sold! I still have an 800XL and 600XL in the box.

Yes, they still have them.

Atari 800XL Computer with Original Box and Manual Tested and works fully. Has been taken apart and cleaned inside and out. Good keyboard, all keys work. This version has a mechanical keyboard, no mylar. It has the one-wire mod to add the chroma signal to the video output DIN. It is normally missing on NTSC 800XL's. Any questions, just ask! Just the computer, box, and manual. No power supply or cartridges. I recommend modern USB-C power supply with adapter.

Thanks, I will give them a try.

Does anyone have any spares or sell in the USA, or is the replacement kit from sellmyretro the only way to get them?

Atari 130XE Computer Completely cleaned and tested. Working 100% $225 I entertain reasonable offers, and will ship in the US. No power supplies or cables or cartridges included. I recommend a modern PSU! (Note: 800XL was sold)

This was sold. There seems to be a lot of people from Europe wanting these....

Many, many USB power adapters are crap. They either lie about the amperage completely, or they drop down the voltage too mich under the load they are supposed to handle. I run into this powering RPi's all the time. It doesn't even matter if they are name-brand or not. It means nothing.