exxos's Atari, Amiga & retro forum

My Atari 1040 STe died today while playing Titus the Fox. It froze (both video and audio), and displayed a number of bombs that I didn't count, after which a reset produced just a garbled screen. After turning it off and on again it just showed a brown-red screen that quickly faded to black. A couple of times I succeeded in getting to a floppy desktop since, but now all it seems to do it light up the keyboard LED. The floppy drive is not making any sounds any more and I get nothing but a black image.

After buying the STe, I replaced the power supply with a SidecarTridge. I replaced the 1024Kb with four HYB41256-15 chips of 1024Kb each. I also added a Blitter chip, which was missing, and replaced the faulty keyboard.

I don't have the knowledge to fix this. Is there someone in the Amsterdam area who could have a look at my STe?

First thing I would normally do is remove any socketed chip, spray contact cleaner, replace chips.

Yours sounds like an older model STe with replaceable blitter, like this? viewtopic.php?t=7419

So I would do this on the CPU, Blitter and Shifter. I would also re-seat the RAM.

Then if this doesn't work... move on to more advanced troubleshooting.

ps - you mention upgrading RAM chips, I assume you mean SIMMs. Or are you mistaking an STf for an STe?
pps - you mention replacing the PSU with a Sidecartridge, I assume you mean one of their PSU replacements, like this or this?

Steve wrote: 22 Feb 2026 19:52 First thing I would normally do is remove any socketed chip, spray contact cleaner, replace chips.

Yours sounds like an older model STe with replaceable blitter, like this? viewtopic.php?t=7419

Thanks. It's the one in the picture in this thread:

viewtopic.php?t=7938

Steve wrote: 22 Feb 2026 19:52 So I would do this on the CPU, Blitter and Shifter. I would also re-seat the RAM.
Then if this doesn't work... move on to more advanced troubleshooting.

I'll try that. Thanks!

Steve wrote: 22 Feb 2026 19:52
ps - you mention upgrading RAM chips, I assume you mean SIMMs. Or are you mistaking an STf for an STe?

Yes, I meant SIMMs.

Steve wrote: 22 Feb 2026 19:52 pps - you mention replacing the PSU with a Sidecartridge, I assume you mean one of their PSU replacements, like this or this?

The former: this

Do you still have the original power supply?

Do you have a multimeter/voltmeter?

Resocketing the SIMMs was all what's needed. Thanks all!