Fletch Posted October 14, 2008 Share Posted October 14, 2008 One of my 1040STs power supplies has died. I have an old 520 ST PSU that i figured I might be able to use if someone has info on the 1040 STs internal power connectors pinout. I know Best and B&C sell new ones, but $70 seems a bit stiff. If you have the pinout I'd appreciate forwarding it on. Thanks! Fletch Quote Link to comment Share on other sites More sharing options...
ggn Posted October 14, 2008 Share Posted October 14, 2008 One of my 1040STs power supplies has died. I have an old 520 ST PSU that i figured I might be able to use if someone has info on the 1040 STs internal power connectors pinout. I know Best and B&C sell new ones, but $70 seems a bit stiff. If you have the pinout I'd appreciate forwarding it on. Thanks! Fletch Don't have any schmatics at hand, but from memory they are the same as any PC AT/ATX PSU gives you, 5vdc/12vdc/ground/ground. Of course you have to decide if you do want an AT PSU hanging behind your st and making noise! Quote Link to comment Share on other sites More sharing options...
Shredder11 Posted October 14, 2008 Share Posted October 14, 2008 I suppose a silent fanless PC PSU would work too? Quote Link to comment Share on other sites More sharing options...
ppera Posted October 14, 2008 Share Posted October 14, 2008 @Fletch: Here are some schematics of diverse Atari models: http://dev-docs.atariforge.org/ Of course, there are power supplies drawn on them. No SCH of 520 and it's PS, but it is not big deal to measure them. If you still can not figure out pin-layout, I con dig out one of old external 520 PSes, and check it... Same as PC AT... ? Hahhaha... Not layout of pins is same, not internal circuit (PC power suplies are much stronger, with 2-3 power transistors at primar, while ST power suplies have only 1 power transistor... ). Using PC PS however may be a solution, and we have even some silent ones available... Quote Link to comment Share on other sites More sharing options...
Fletch Posted October 14, 2008 Author Share Posted October 14, 2008 Thanks for the link. So from what I'm seeing: pins 1 and 2 are 5v pins 3, 4, 5 are ground pin 6 is 12 v Does that seem right? Thanks again for the help! Fletch @Fletch: Here are some schematics of diverse Atari models: http://dev-docs.atariforge.org/ Of course, there are power supplies drawn on them. No SCH of 520 and it's PS, but it is not big deal to measure them. If you still can not figure out pin-layout, I con dig out one of old external 520 PSes, and check it... Same as PC AT... ? Hahhaha... Not layout of pins is same, not internal circuit (PC power suplies are much stronger, with 2-3 power transistors at primar, while ST power suplies have only 1 power transistor... ). Using PC PS however may be a solution, and we have even some silent ones available... Quote Link to comment Share on other sites More sharing options...
Bryan Posted October 14, 2008 Share Posted October 14, 2008 Check the bridge rectifier*. That went out in my 1040 supply. *Round black thing about 1/2" across with 4 leads. Quote Link to comment Share on other sites More sharing options...
Agussy Posted April 14, 2016 Share Posted April 14, 2016 Check the bridge rectifier*. That went out in my 1040 supply. *Round black thing about 1/2" across with 4 leads. Yes, but How do you go about replacing it? Quote Link to comment Share on other sites More sharing options...
galax Posted April 15, 2016 Share Posted April 15, 2016 Yes, but How do you go about replacing it? You desolder the old one and solder in a replacement. Quote Link to comment Share on other sites More sharing options...
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