Power Supply Unit for use in the UK

Crimsom_247

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Sep 19, 2016
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I am located in the United Kingdom and during 2004 I purchased the 64 bit ready Storm Workstation from MESH Computers plc for Desk Top Publishing. The Workstation specification includes:-
OS: Microsoft 32 / 64 bit Windows 7 Professional
Mother Board: 64 bit ready Asus AV8 Deluxe / WIFI-G Rev 1.xx
BIOS Version: American Megatrends Inc. 1017
PSU: HEC 385AD-PT -> Total Output: 385W -> Intel Ver1.3 ready -> ATX 12v
Graphics: 128ATI Radeon 9800PRO (ALL IN WONDER)
Processor: AMD 64 bit Opteron Dual Core Model 180 / 2.4GHz / 939 PIN
Memory: 1.50 GB
Caddy: two iCute SATA
HDD: Seagate Barracuda 500GB + recovery HDD
Network Card: Gigabit Ethernet Controller

Complete with:-
Monitor: Iiyama Vision Master Pro 514 (HM204DT A)
Printer: HP Laserjet 1100
Scanner: Epson Perfection 1240U Photo Scanner
External Data Storage: two hot swappable 3.5” SATA mobile USB2.0
Broadband: 74Mbps

Having made the 2004 purchase, I have no intention of getting a new Workstation that makes my other hardware redundant. A dual core processor is more than adequate for Desk Top Publishing and creating my HMRC Tax Returns.

Information on HEC High-Quality Evolution Commitment power supply units for use in the UK is now difficult to find. The HEC Group may have ceased trading in the UK. Second hand HEC power supply units can be found. The HEC-385AD-PT specification is:-
AC INPUT 230Vac 50Hz 8A
DC OUTPUT +3.3V +5V +12V -5V -12V +5Vsb
MAX.A 35A 36A 18A 1A 1A 2A
+5V&+3.3 COMBINED 220W TOTAL OUTPUT 385W
Intel Ver1.3 ready ATX 12V

The -5V power rail is not required by modern motherboards. But there are second hand power units made by other suppliers. But which provides a PSU that is more tolerant of being switched on and off more frequently during HDD back-up without blowing a capacitor?
 
Solution
So does most of Europe, All modern PSU work from about 100v - 250v and 50 - 60Hz. Capacitors go bad because of age, overheating or overwork, not from turning of and on. You are safe with good make and at least 25% more declared power than actually needed.
Here is a good place to check how much power your computer needs, peripherals excluded of course: http://outervision.com/power-supply-calculator
So does most of Europe, All modern PSU work from about 100v - 250v and 50 - 60Hz. Capacitors go bad because of age, overheating or overwork, not from turning of and on. You are safe with good make and at least 25% more declared power than actually needed.
Here is a good place to check how much power your computer needs, peripherals excluded of course: http://outervision.com/power-supply-calculator
 
Solution

Crimsom_247

Reputable
Sep 19, 2016
87
0
4,640
Can someone let me know the make and model of a new psu that would replace HEC-385AD-PT complete with -5V rail? The HEC-385AD-PT specification is:-
AC INPUT 230Vac 50Hz 8A
DC OUTPUT +3.3V +5V +12V -5V -12V +5Vsb
MAX.A 35A 36A 18A 1A 1A 2A
+5V&+3.3V COMBINED 220W TOTAL OUTPUT 385W
Intel Ver1.3 ready ATX 12V
 

Crimsom_247

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Sep 19, 2016
87
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4,640
hec-group.com.tw have been very generous and provided the circuit diagram of HEC-385AD-PT. They are not able to find the build list for this model because it had been 10 years. (So I will try and create the build list.) I am prepared to pay for ‘full’ refurbishment but have been unable to find anyone that has the appropriate test equipment and would do this for me complete with warranty. I have visited YouTube and replacing the components is within my capability. However although I have the knowledge, I do not have access to the appropriate test equipment. So its not going to be easy, but I will have a go nonetheless. Kind regards. Eric.
 

Crimsom_247

Reputable
Sep 19, 2016
87
0
4,640
My thanks to Grandmaster, "Here is a good place to check how much power your computer needs, peripherals excluded of course: http://outervision.com/power-supply-calculator." I was getting ready to repair both of my HEC 385W HEC-385AD-PT ATX PSUs, one to use and the other on standby. However the power supply calculator says I should have a 558W PSU, including +3.3V & +5V combined power of 190W and +12V power of 368 W. This explains why my two HEC 385W PSUs failed and that I need a more powerful PSU. The calculator provides replacement PSU recommendations and hyperlinks. My thanks to Grandmaster who has provided a very good response. Kind Regards, Eric.