Have this from my dentist's office, exhibits the 2sec to black symptom. Inverter board has two "N?Con" caps. What's odd here is these caps are 56uF/25v (one is bulged). What can I get to replace these? (there's two of them)
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Re: Viewsonic VG700b odd caps
Use a 68µf or 100µf 25v capacitor.
Pictures? Sounds like it could be in a ventless can, just because of the voltage and capacitance.Muh-soggy-knee -
Re: Viewsonic VG700b odd caps
Are they green and they say "EVL" on them?
Here you go:
http://www.digikey.ca/product-detail...1818-ND/589559
Make sure the diameter matches (These are 5mmx15mm)Comment
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Re: Viewsonic VG700b odd caps
Yeah. Exactly that. I had two 47uF Nichis handy, so I tried those, and surprisingly, it works! Also replaced a bloated 330uF/16V Teapo near the BL connector on the main logic board. Think it'd be ok to leave the 47s in there?Comment
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Re: Viewsonic VG700b odd caps
Sure. Remember they're 47uF +/- 5%.Comment
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Re: Viewsonic VG700b odd caps
Out of boredom, I drug the three bad caps across my tester. The bloated 330uF teapo actually tested better than the two "NKCON" 56uF caps. Neither of the NKCONs even managed to reach 1uF on the meter (and one of them wasn't even bloated!). The teapo managed about 92uF.Comment
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Re: Viewsonic VG700b odd caps
It's not just about the capacitance... If the caps internal resistance gets too high, the cap overheats. Chuck them in the trash.Comment
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I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Hello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.
I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
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Hello!
I have two projects on my work bench. One is a friends dead JBL Xtreme speaker with a blown voltage regulator and corresponding bulged and shorted cap. That cap has clear markings so I know what replacement I need for it.
The other project however is a whole different deal. It's a Zoom 9000 guitar effect from the 90th that has developed a devil hound howl when there is no input from the guitar. I'm guessing caps problem. So, since I don't really use this effect anymore I thought it would be a perfect project to learn on.
I have studied the board and... -
I'm trying to repair two old VCRs, they both have bad caps. One has leaky ones, the other would barely run until I subbed in some caps from another power supply I had laying around (though they are the wrong values). This vcr works for an hour or two, but then the power supply starts whining and the picture gets lines in it. I didn't replace all the secondary caps, so another voltage might still be problematic, or the values I used are too far off.
I've been on mouser and digikey but the options are a bit overwhelming. I just need some new ones that will work. They don't need to be top quality,... -
Good evening
I recently aquired a rev 1.1 Gigabyte 60XT, and was suprised of the amount of leaking caps for a motherboard of the P3 era. Especially the way the 330µf caps seems like the housing discolored even.
Now, there are some 3300µF 6.3V KZG series around the CPU. Would it be OK to replace them with something like EEUFR1A332 ? (Panasonic FR 3300µF 10V). Or was this board designed around very low ESR caps?
But I was also suprised about the bigger boys, which are 330µF 25V.
Could it be they used 25V caps because they were cheaper / available at that time?...
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