Umberto

https://www.amazon.com/Positive-Negative-Voltage-Boost-Buck-Converter/dp/B07SJ4ZXYQ/ref=asc_df_B07SJ4ZXYQ/?tag=hyprod-20&linkCode=df0&hvadid=475741834053&hvpos=&hvnetw=g&hvrand=2655686133481039203&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9033519&hvtargid=pla-1032401992282&psc=1 Buck converter will give your -5v rail from the 12v rail. Like I said in post 35, I have one installed in a Mage ST not a MSTE. Mage ST only has a 5v and 12v rails. https://www.digikey.com/en/products/detail/mean-well-usa-inc/RQ-85B/7706154?s=N4IgTCBcDaIEoEUC0AOArAIRAXQL5A Your right this would be a better choice. The other one you listed is to long to fit in a Mega STE

I have it installed in a Mega ST. If its a MSTE with a HDD solution like CosmosEX or a ultra satan(no mechanical drive) it will work just fine. -5v is still needed but can be added easily

https://www.exxoshost.co.uk/atari/store2/#0032

I'm running a lightning usb with usb HDD and usb DVD no problems. Has ample power. But meanwell has bigger PSU's if needed

are these still available? if they are I want 2 thanks

It will save you so much time to find the cradle. Especially for the power switch and fan. I would bet my left you know what, that Brad at Best has just the metal work in stock

You can easily jerry rig it into the original psu cradle. I have mine running straight for 2 months no probs. download the spec pdf it shows the connections

You could do this to the original psu https://www.atari-forum.com/viewtopic.php?t=32457&sid=9bf0148479e3e76ad2375a18bbf010c1

No but there are that do. The one I have has a -12 rail. Very small medical grade 50 watts https://www.digikey.com/en/products/detail/mean-well-usa-inc/RPT-60B/7706127?utm_adgroup=AC DC Converters&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Product_Power Supplies - External%2FInternal (Off-Board)_NEW&utm_term=&utm_content=AC DC Converters&gclid=CjwKCAiA_eb-BRB2EiwAGBnXXpcBO8WVSd75TYHJ8x0hmVniudGfgenKkB4v92qcW_PqVnTkJmiVXhoCCNYQAvD_BwE

The Mste will only draw as many as needed. With a physical mechanical hard drive it will need more. Minimum of 50 watts. The stfm psu is 30 watts and it will power a hard drive. If your pluging in a alt psu more is better. Look up meanwell psu's https://www.trcelectronics.com/View/Mean-Well/RD-50A.shtml?gclid=CjwKCAiA_eb-BRB2EiwAGBnXXlQFzE7a6fmy3Fk93CSseqBcIAVz-k2YUgUcCtplD they do make them with -12v I have one in my Mega st with lots of goodies attached with no problems

+1 (Pokey&YM) Please

sign me up for one

I put a traco power regulator in mine, got rid of the heat sink

I have both, very little noticeable difference in the s-video

Look in his store under ram https://www.exxoshost.co.uk/atari/store2/

That's the way is supposed to look. I believe Lace scan will give you more image area, but its a hardware mod.

I do, where are you located?

Can you swap out the keyboard also can you scope the 5v and 12v to see if it is a clean source

Yes

As stated above on a STF its the Yamaha 2149 (U19) pins 19 and 20 https://rdemming.home.xs4all.nl/Atari/DriveSwapAtariST/

Talked to whaky yank before, definitely a loon

130xe more ram and svideo

Can you get these on Wish?

Bad file, I have had very few atr's not work. But have had plenty of atx files not work. Try to find it in a atr.

I can help