Next big project is an Antec SU-380 with blown fuse. Of special interest is the 5vsb surface mount IC on the bottom of the pc board. Can anyone identify it???
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Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11) -
Re: Antec SU-380, no 5vsb, blown fuse...
Could it be temperature control for the fan?
Googling AAHB0 Gets a hit on the following:
MAX6510CAUT-T
Category: Sensors => Temperature Sensors
Description: MAX6509, MAX6510 Resistor-programmable Sot Temperature Switches
Company: Maxim Integrated Products
TOP MARK ADNT ADNU AAHA AAHB
Datasheet http://www.digchip.com/datasheets/pa...CAUT-T-pdf.php36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far.... -
Re: Antec SU-380, no 5vsb, blown fuse...
The temperature control is a separate PCBOriginally posted by smasonAttached FilesI 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
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Antec SU-380, no 5vsb, blown fuse...
Back to this power supply - have had to deal with family medical problems these past weeks.
I measured resistance of lots of parts on this board and could not find anything shorted. So I boldly replaced the fuse and powered the psu. Everything came up working. All voltages OK. Now for the big question......what blew the fuse?
As time permits, I will replace the 12 or so OST capacitors.Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)Comment
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Re: Antec SU-380, no 5vsb, blown fuse...
Could it just have come to the end of it's life span ?? surly fuses will only last so long..Just a thought.Comment
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Re: Antec SU-380, no 5vsb, blown fuse...
"Now for the big question......what blew the fuse?"
hmmmm......?
Where's the soft-start thermistor??veritas odium paritComment
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Re: Antec SU-380, no 5vsb, blown fuse...
Pretty sure that's it.Attached Files
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Re: Antec SU-380, no 5vsb, blown fuse...
If true, that seems an odd place. Typically expect to see it before the rectifier; right at the beginning of the line supply just after the fuse.veritas odium paritComment
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Re: Antec SU-380, no 5vsb, blown fuse...
Well, it is a seasonic
After all, they did make this:
http://www.jonnyguru.com/modules.php...tory4&reid=169Comment
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Re: Antec SU-380, no 5vsb, blown fuse...
Very unusual. The system I'm typing this post on (My modded briefcase) is currently being powered by a re-capped Antec SU-380.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
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Antec SU-380, no 5vsb, blown fuse...
Sorry for sullying this thread, but when I saw the +5 V SB transformer...does somebody have an idea where to buy it? I destroyed by accident half of the stand-by rail in my Seasonic SS-500ET-F3, the transformer is only component I cannot find, everything else I already have replaced.
It has VEE19FB07 on it. Seasonic uses this (or similar VEE19FB05) in most PSU's based on M12 or S12 models (it means also Corsair's VX450, HXx20, AC Fusion 550RF and others) with ICE2A0565Z power IC.Less jewellery, more gold into electrotech industry!
Half of the computer problems is caused by bad contacts 
Exclusive caps, meters and more!Hardware Insights - power supply reviews and more!Comment
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Re: Antec SU-380, no 5vsb, blown fuse...
As a followup, here is some information on the 5vsb circuit for this power supply. Attached is a schematic. I never did find a data sheet on the pwm chip. With power supply plugged in but computer power off (ps-on in off mode), the 5vsb is running at 20.33 khz with pulse width of 1.0 usec for the turn on pulses. With computer power on (ps-on in on mode), the frequency of the pwm chip was very unstable, ranging from 24 to 33 khz.
Active PFC voltage measurements on the main input capacitor (220 uF 400 volts) is 160.5 DC with power off, and 377.8 volts DC with power on.
Fuse replaced and a recap, I am ready to put the pc board back in the case.Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)Comment
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Re: Antec SU-380, no 5vsb, blown fuse...
Could that frequency instability be a "feature"? Something like "jittering", to eliminate any audible noises?
Although 20 to 33KHz is quite a "stretch" for that... Or maybe frequency modulation?Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - ShenanigansComment
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Re: Antec SU-380, no 5vsb, blown fuse...
It is working fine now. Don't know if removing OST caps and replacing them with Nichicon PW helped or not (couldn't hurt!). I have decided to leave sleeping dogs lie, if it works, leave it alone for now. If for some reason it ever blows that surface mount 5vsb chip, it think it will be a good candidate for an outboard 5vsb circuit with DM311.Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)Comment
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I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
HP Modelnumber: 14-dh0061nb​
This laptop had a shorted cap on a Vcore section. After replacement is works again. But there is still a battery issue.
The battery is HT03XL and with the built-in component test from HP, in the Power section, I get an error: Logic State: Calibration required (20), Charge state: Blown Fuse (42)
I have another same battery, also with error: Logic State: Very Weak (70), Charge state: Blown Fuse (42)
And a third battery TF03XL (looks identical) with error: Logic State: OK (0), Charge state: Blown Fuse (42)
All these 3 batteries are charging... -
I gotten a Carver CM-1090 amplifier from a friend who has kept it in storage for decades. Opened it up, thick layer of dust cumulated everywhere. Vacuumed it semi-cleaned, and blown off as much as possible the remaining dust. This is a 220V version.
On initial powered up with nothing connected - it works with all the lights and button indicator lit up as pressed, etc. I then powered off, connected a CD player into the CD RCA input and powered it on. It seemed to work for a short while and when I turned the volume up and down to see the the VUs works, the power started to clicked off... -
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Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the...
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