Re: Pioneer elite vsx-51 shutting off as soon as I power
Not sure how the VSX-51 matches up internally but I've repaired a VSX-40 and a VSX-1021 which was exhibiting the same problem. Basically it would power off seconds after power on. All the outputs transistors tested OK. I found that rigging a piece of dupont wire to each channel output (off the connector in the middle of the amp board) to my multimeter probe was the easiest for me to figure out which channel was showing DC at power on as the connector is not really accessible with all the boards in place. (or having any Pioneer...
bobcaygeon
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Last Activity: 08-31-2019, 09:36 PM
Joined: 02-08-2005
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Re: Power supply build quality pictorial. part 2
Kentek KTPS-850
I waffled back and forth trying to decided whether to post this here or in the "gutless" thread. :-) This can be seen as one of those <$50 US shipped ebay specials. My guess is that this is a Leadman. LP-8869E appears to be the model number, and it has the wrap around QC PASS date sticker that I've seen on a bunch of those. The fan is interesting in that it has the shroud molded into the plastic, as opposed to the typical piece of lexan glued to the fan. The secondary caps are a mix of AsiaX...Leave a comment:
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Re: the gutless, bloated, and fried power supply hall of shame
It looks like this power supply jumped the shark...
Where to begin:
It looks like the wires to the 120/240v selector are just wedged between the primary caps and heatsink and the assembler bent the fins to make it work. One wire seemed to have escaped and got crushed flat by the fan. I cant explain why the fins on the other side of the primary heat sink were bent inward. The input filtering is a barren wasteland. The primaries are Fuhjyyu and the secondaries appear to be a sea of Canicons....Leave a comment:
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Re: Power supply build quality pictorial. part 2
Delta DPS-450DB S
This power supply powered a Xeon 2.6Ghz server with 5 10k RPM drives, a whopping 2GB of RAM, and various other peripherals 24x7 for nearly 7 years straight till it was finally retired about two years ago. I thought I would take a peak inside of it since its just been sitting on the shelf.
Remarkably little dust in the unit for running all that time, but I pretty much attribute to it being in a climate controlled environment. It looks pretty overbuilt for a 450W unit, especially compared...Leave a comment:
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Re: Adi E55 Crt
How thick is the stripe? If its really thin, I've seen on Trinitron type monitors where two of very thin mask wires, which run from top to bottom from across the width of the monitor will get stuck together causing a now noticable line . Usually this happens if the monitor was jostled severely (ie: UPS shipping). Giving the monitor a good thwap on the top of the monitor is usually enough to get the grid to unstick.Leave a comment:
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Re: Now THAT is a sound card!
I cant see the words on the brown caps very well, but the brown color and the distinctive vent - the diagonal cut line with the small arc - is commonly an Elna capacitor. Elna caps are very popular in Audio equipment.Leave a comment:
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Re: HP Pavilion 6305 PSU
If you opt to not repair it yourself, you can try buying this P/S: [url]http://www.newegg.com/Product/Product.asp?Item=N82E16817104112[/url]. I've bought two of these for two different HP Pavillions over the course of a year and they're still running fine. I do recall though, when I took a peek inside the ventholes before installing them, they did not have the best choice of caps.Re: HP Pavilion 6305 PSU<br /> <br ...7104112[/url].Leave a comment:
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Re: comp usa 250 atx
I have that same looking power supply round here somewhere also.. with the single heatsink with primary and secondary semis on them, although mine actually has a Wintech sticker on it and its labelled 300W. It'd be interesting to see if there was any difference in its caps... I think mine had Jee caps from top to bottom. On a related note, heres another 250W CompUSA power supply I took pics of a few years back that died a silent death as evidenced by the scorch mark. As I recall it was one of those... "died in the middle of the night while nobody was looking"...Leave a comment:
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Re: Help With Generic Monitor
Another place you might want to look for a bad solder joint is at the CCFL tube connection itself. I had a Sony 18.1" LCD that exhibited a similar problem. It would usually work for a minute or two, then the backlight would go out. It turns out that one of the solder joints where the HV wire connected to the top CCFL had gone bad. I only found it after carefully removing the rubber bung that insulates the end of the tube. After resoldering the connections, and cramming that mess back into the insulation, its been working fine for over a year n...Leave a comment:
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Re: bad cap manufacturers - please post yours here
not sure if this is a one off occurrence, but heres an "Elite" brand capacitor I pulled out of a NEC FE2111SB monitor. Not sure if you can tell, but the cap is bulged to the point that the cap is tipped in the photo. The picture on the monitor was best described as slightly jittery, and replacing the cap with a Nichicon of equivalent capacitance/voltage (either that or ripping the entire monitor apart and putting it together again) has solved the problem without reoccurrence after 2.5 months....Leave a comment:
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Re: Power supply build quality pictorial
Topower TSP-350P4 (350W). CapXon on the Input side, and an all Fujiyyu lineup on the output side....Leave a comment:
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Re: Power supply build quality pictorial
The diametric opposite, of the above (unbranded Generic 450W pulled out of a cheap case... after opening it looks like a Leadman LP-8860) loaded with caps from the netherregions. Not a single brand I recognize... TS brand 470uF caps on the I/P and a combination of TEK, Yicon, and Chmec on the output. This one is rated higher than the Fortron 400W I posted above... looking at the insides, makes me think twice....
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Re: Power supply build quality pictorial
Fortron FSP400-60PFN. Its got a single Hitachi cap on the input and a combination of Teapo and CapXon on the output....Leave a comment:
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Re: The Hall of Shame - Badcaps Photo Montage
Heres a failed Fulltec (bulged), Jee (bulged), and a CS (bulged with junk coming out the top) capacitor from a group that I pulled from an older rebadged Leadman LP-8800D that I was recapping "for fun". Ironically, the only cap that was still good (or at least looked good) in the O/P section was a 1000uF Fujiyyu, so you know if the Fujiyyu surived these must be bad.
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Re: No brand is safe due to rampant counterfeiting!
when I first saw the pic of the smaller cap in the larger one, the thought that immediately came to mind was it was part of some recap job for an old (ie: tube ) radio.... i've seen where modern electrolytics are placed inside of the old original aluminum caps (which have long since dried out) in order to maintain the aesthetics of the inside of the tube radio. Of course, usually you try to maintain the capacitance and voltage rating of the original... which doesnt appear to be met in this case.... not to mention the fact that...Leave a comment:
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Re: Software for burn in?
In my overclocking endeavors I use a program called OCCT ([url]http://www.ocbase.com/downocct.html)[/url]. I've found that if I'm pushing the limits, OCCT fails faster than Prime95. Note: the page is french, but the software has english text. I would think this would be a good torture test, along with Memtest, and Prime95.Re: Software for burn in?<br /> <br...Note: the pageLeave a comment:
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Re: Iso-p500spp Psu
I have a few similarly decieving name ISO-400 (same logo and everything) which are actually 300W PS. One went "poof" ... not sure what the failure mode was though.... didnt have a chance to pop-the-top (didnt smell like it completely cooked; it just made a quiet snap while I was in front of it, and no more computer) Swapped out the P/S, and everything on the computer was OK at least!Leave a comment:
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Heres a pic of a bulging (though I dont know how obvious it is in the pic) Jun-Fu and Rulycon capacitor from a dreaded Deer power supply. [url]http://home.comcast.net/~eb_0403/random_images/P1010183.JPG[/url]https://Heres a pic of a bulging (th...0183.JPG[/url]Leave a comment:
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