I've got an Antec PP-303X power supply (300 watt). I just opened it up and didn't notice any caps with bulging tops, but a few of them seemed to be tilting. Are they supposed to be like that?
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Re: Is my power supply OK?
not uncommon to see tilted caps.as long as the bung isnt blown out of them they are likely ok. -
Re: Is my power supply OK?
Install it in the system and check the voltages on +5v and +12v (at any spare molex connector) with the system running with full load, e.g. copy a large file from the CDROM to the hard drive. The voltage shoudn't drift, spike or drop a great deal when loaded/unloaded. It should ideally be within +/- 2.5% on both rails, but +/- 5% is tolerable.Comment
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Re: Is my power supply OK?
good test for the average joe but i like to look for noise/ripple with the scope too.
few here have one but even a real cheap flea mkt one will tell you a lot.Comment
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Re: Is my power supply OK?
can you do a little howto on the scope for this purpose (just settings and what to look for). i havent found time to understand mine. i got a dick smith esr meter coming soon also. should be quite useful.Comment
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Re: Is my power supply OK?
I did notice a few spots in the power supply with some kind of tannish-brown substance. Could this be electrolyte that burst out of a capacitor, or is it just something normally found on the board? I attached pictures... in the first picture, there's a pile of the stuff right next to a capacitor. In the second picture, there's a ring of the stuff near something that is cylindrical and has a purple top and some yellow crap on its side... not sure if that's a capacitor, it certainly doesn't have the "plus sign" on top that most caps have.Attached FilesComment
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Re: Is my power supply OK?
It's a Channel Well OEM unit - I can't say from the pics, but there could be uncleaned flux residues, or dust settled on hot-melt glue that's visible. If it's visibly located right next to or on a capacitor, then it helps to replace the cap.Comment
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Re: Is my power supply OK?
Definitely glue or RTV of some sort. The object in the second pic looks like a shrink-sleeved, ferrite-rod-core inductor. The purple is probably a QA mark or an identifying mark for assemblers.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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Re: Is my power supply OK?
I have one apart here, it's like Pete said above...RTV or glue. Actually I have 2 of them on my desk...Ya'll think us folk from the country's real funny-like, dontcha?
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
I have a 15 - inch Retina MacBook Pro from the mid - 2014 model. Here is the link: https://www.badcaps.net/forum/showth...light=820-3662 . The battery broke some time ago. After I removed the battery and plugged in the original power adapter, the MBP could boot up normally. However, when I checked with IntelPowerGadget, I found that the CPU speed was limited to 0.8 GHz, and it ran very slowly. Later, I found a solution on GitHub. There is an open - source project called cputune that can set the CPU running speed. So I can now run the MBP at full speed. But another problem...
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