Re: the gutless, bloated, and fried power supply hall of shame
They probably blew the budget on the shiny label, instead of making a half decent power supply...
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They probably blew the budget on the shiny label, instead of making a half decent power supply...
The sad thing is that they were decent power supplies with the exception of the caps and how the fan controler was set, a few cents in quality caps and a fan controler set to speed up at a lower tep and these could have been some of the most reliable PSUs of their generation but instead they were some of the least reliable.
Re: the gutless, bloated, and fried power supply hall of shame
Trash. I think when they made it they forgot to print the IT after SH Can't tell who made it but it kinda looks like my old POS Raidmax...Input caps are HEC, the rest are JEE. Surprised to see ANY parts at all for the transient filtering. The PWM controller is made by Fairchild (don't know the model) I threw it straight in the trash. Should I consider salvaging it? There are hardly any caps on the secondary....
Re: the gutless, bloated, and fried power supply hall of shame
^
Originally posted by Label
High Quality Switching Power Supply
It's a Sun Pro.
It actually looks to use DC-DC conversion on the 3.3V rail, and the heat sinks look thick enough. Might be a keeper if you re-cap and fix up the input filtering.
EDIT: The Delta I posted before is alive. I replaced the caps, the smaller torroid coil, and the wires. It's fine now. It does the full 300W in spec.
Re: the gutless, bloated, and fried power supply hall of shame
I didn't do a progressive load test. It was late in the day, and I had other things to do, so I just took it straight up to 310W. The efficiency there was about 77% IIRC. Not great for 230V, but I've seen much worse.
I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
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Trash. I think when they made it they forgot to print the IT after SH Can't tell who made it but it kinda looks like my old POS Raidmax...Input caps are HEC, the rest are JEE. Surprised to see ANY parts at all for the transient filtering. The PWM controller is made by Fairchild (don't know the model) I threw it straight in the trash. Should I consider salvaging it? There are hardly any caps on the secondary....
Yeah the heatsinks look somewhat decent. What transformer it uses? I think it is the most basic element really. You can pretty much change everything else, but not so much the transformer (well, if you don't have bigger one with the same wiring from another PSU).
Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts
Yeah the heatsinks look somewhat decent. What transformer it uses? I think it is the most basic element really. You can pretty much change everything else, but not so much the transformer (well, if you don't have bigger one with the same wiring from another PSU).
+1
And I was never brave enough to change the primary transistors of a psu.
Sun Pro it is, indeed.
I wouldn't touch that particular platform even with a 10 m stick. It's crappy at best. Decent source of parts, though.
Originally posted by Pentium4
Should I consider salvaging it? There are hardly any caps on the secondary....
Yes, you should. The caps may as well be garbage, but the secondary rectifiers on those are usually okay. The 5V rail in particular, may have 16 or 20A part. It's not a whole lot, but when you get a Deer or a Bestec that has space for a second rectifier on one of it's rails, this becomes a really nice upgrade. The MOSFET that regulates the 3.3V rail on these units is also useful. The 431 shunt regulator is also useful if you like to thinker/play with circuits.
Re: the gutless, bloated, and fried power supply hall of shame
I've never seen an ERL-33 transformer. What I have seen are EI-33 and ERL-35. (And larger sizes like ERL-39 in bigger PSUs, or EI-28 in the worst of the worst.)
Sun Pro it is, indeed.
I wouldn't touch that particular platform even with a 10 m stick. It's crappy at best. Decent source of parts, though.
Yes, you should. The caps may as well be garbage, but the secondary rectifiers on those are usually okay. The 5V rail in particular, may have 16 or 20A part. It's not a whole lot, but when you get a Deer or a Bestec that has space for a second rectifier on one of it's rails, this becomes a really nice upgrade. The MOSFET that regulates the 3.3V rail on these units is also useful. The 431 shunt regulator is also useful if you like to thinker/play with circuits.
I'll recheck tomorrow. I'm pretty sure it was a 30A part for the 5V though
I've never seen an ERL-33 transformer. What I have seen are EI-33 and ERL-35. (And larger sizes like ERL-39 in bigger PSUs, or EI-28 in the worst of the worst.)
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Half of the computer problems is caused by bad contacts 
so that's how they got away with selling those things at high prices 
https://www.badcaps.net/forum/showthread.php?t=22475
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