Re: The Hall of Shame - Badcaps Photo Montage
That's good to know, thank you for the info. I might change some better quality, but general purpose caps for the warts. And yeah, they are doomed to fail at some point by design.
Surprising! It's good to be aware of this behavior, as keeping a wart both loaded and unloaded at times will make the output caps adjust to the changed voltage each time, and possibly shorten their life....
wacce
Member
Last Activity: 09-03-2017, 05:56 AM
Joined: 02-03-2012
Location: Espoo
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Re: The Hall of Shame - Badcaps Photo Montage
Good to know, never seen the TE brand before. I don't see that there's any wiggle room inside the case, as the transformer is kept in place by the plastic shell. Therefore I don't see that even dropping the thing would cause such damage to the cap, and my conclusion was that this must have happened at the factory.
I was aware that it's normal for the output voltage to climb without load, but didn't expect it to go over 10V. The current 2200uF 10V cap won't probably like it if it's standing on ~12V for extended...Leave a comment:
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Re: The Hall of Shame - Badcaps Photo Montage
I believe this fits into the hall of shame very well. I went and repaired a couple of 7.5V 900mA DC wall warts that couldn't deliver enough power (and made the router "ticking"), both made by the same manufacturer SPEC LIN.
They have a single capacitor at the output, which by no surprise was the problem. They used a non branded 2200uF 16V caps with a 105°C temp rating, and only marking to indicate the series is "TE". They have CDXXX-markings, which lets you know they are Chinese made at least, somewhat...Last edited by wacce; 09-01-2014, 08:31 AM.Leave a comment:
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Re: Akasa AK-P460FG BL (Silverstone ST46F) burnt resistor
I just tried replacing the burn resistor with a 1.8k Ohm resistor (also replaced the primary cap with a 220uF 450V, to rule out a bad primary), but no change in behavior; motherboard led turns on, but nothing more happens. One noticeable characteristic is that when the power is switched off from the main switch, the voltage in the circuitry dies out faster than usual, and produces a clearly audible "zzip" at the moment when the led turns off.
My next move would be to try a ~15 kOhm resistor. Any other...Leave a comment:
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Akasa AK-P460FG BL (Silverstone ST46F) burnt resistor
Got my hands on a Akasa AK-P460FG BL (pretty much same device as Silverstone ST46F), which I though would have been an easy recap. After several recapping sessions I couldn't get the PSU to fire up (5VSB comes up, and MB light turns on but the PSU doesn't start up), then I managed to notice one burnt up resistor (R56 I believe) right next to the primary cap. The resistor has burned from the middle (picture 1 in attachments), so only the first and last colors can be seen: they are brown and brown/gold, can't really identify which for the latter. The resistor measured 6.65 kOhm with a multimeter,... -
Re: Help with identifying PSU board (possibly Tagan?)
That actually seems quite interesting. Maybe I'll save the Antec for later, as they tend to be very nice PSUs after some modding.
There is indeed one fan still left, but I'm not sure if it provides sufficient airflow. From the reviews I read that the fans are VERY quiet, so I'm guessing that they don't spin very fast. I think I'm going to use two fans, just to be sure. I might combine one old single fan case with different top cover, which has a place for 92mm fan. We'll see.Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
Excellent, thanks for the reply.
I was considering using the Antec case too, as I'm a little short on two fan cases. With my current level on knowledge, Antec is not an easy case. One resistor near the other heatsink is totally fried (pic. attached), and I believe this PSU went out "with a bang", taking some other components with it. Interestingly, only those two caps near the burnt resistor and one main cap were bulging. Anyway, it might be doable but seems like a good amount of work, going through all...Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
Sorry for my lack of knowledge, but is the EMI filter replaceable with just any (new enough) other EMI filter circuit from for example Antec Smartpower? Antecs circuit seems a bit more compact, and I was wondering if it's compatible. Picture attached....Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
The innards of SAF450 are almost identical to this BeQuiet. Additional 50W would have been nice, but 400W should do in many systems.
Actually the damage on the board is not that big, only the +12V through holes got little bent and they haven't even broken from the PCB. To make sure the connection is ok, I'll solder an additional wire on the trace, over the bent bit.Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
Bingo.
Be Quiet! Colorline 2 Fan (Titanium), 400W version.
[url]http://www.skenegroup.net/fi/artikkelit/be_quiet_13.2[/url]
[url]http://www.hartware.de/review_362_15.html[/url]
I got lots of search results of finnish sites, which gives me more reason to believe that I got it right.
Thanks you selldoor for helping me to the start, I might have ended up using a lot more time on this than I now did!
I've got a blown-up Antec Smartpower SP-450P, which...Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
Seems like I'm spamming my own thread while I find out new things
I realized that the red switch is a three step switch for regulating fan speed, and it was only disconnected from the fan controller circuit. These switches can be found at least in E-power PSUs, like Cougar ([URL="http://www.epowertec.com/power_cougar.html"]link[/URL]) and Xscale ([URL="http://www.epowertec.com/power_xscale.html"]here[/URL]) series.
It is also now obvious to me, that this PSU is made by...Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
My discoveries so far: the board layout and heatsinks resemble most Tagan TG330-U1, but my unit has different fan(s) AND it has a red switch at the back panel (switch cables are attached to the remaining fan). I found some Tagan units with a similar looking switch for using 12V rails as separate or combined, like in TG430-U22.
Other possible brands might be Topower or Epower, but haven't found any units that are similar enough.Leave a comment:
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Re: Help with identifying PSU board (possibly Tagan?)
Thank you for the link! The i-Xeye unit seems almost like the one I have, except that mine has fan controller circuit on the top of the heatsink, and in all pictures I found of i-Xeye the controller was on the side. Different versions maybe?...Leave a comment:
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Help with identifying PSU board (possibly Tagan?)
I recently picked up a PSU board from trashes. The board is mostly intact, and no parts are missing, so I was wondering if it was worth saving. All info on the unit is appreciated. This unit suffers from bad Fuhjyyus, surprice surprice.
The board seems very similar to Tagan PSUs, here's what I found from the forums.
Tagan 480W: [url]https://www.badcaps.net/forum/showthread.php?t=3230[/url]
Tagan TG330-U01: [url]https://www.badcaps.net/forum/showthread.php?t=12484[/url]
Tagan TG380-U01: [url]https://www.badcaps.net/forum/showthread.php?t=14353[/url]
...Last edited by wacce; 07-07-2012, 06:21 AM. -
Re: Msi p35 neo lga775
Sorry for posting to an old thread, but didn't see that this would be big enough of an issue to start a new one (and maybe some one will come across the same problem).
I have the exact same board, from which I replaced 8 OST 680uF 4V caps with 560uF polys. The mobo now boots, but only with RAM at B1 or B2 slots.
In other words the A slots are out. I think this might be because of a 1000uF 6.3V KZG between the A and B slots, but haven't tested out yet. KZG is not bulging, but might be bad as they are well known to go bag even without bulging....
Last edited by wacce; 07-03-2012, 07:20 AM.Leave a comment:
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Re: Be Quiet BQT E5-500W recap, odd sized CapXon
Thank you for the info and tips c_hegge!
Thanks a bunch on that info and pics Scenic!
I guess I should use some wires on the trimmer pot as c_hegge suggested, as soldering it right onto the bottom can be tricky, not to even mention adjusting the knob....Leave a comment:
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Re: Be Quiet BQT E5-500W recap, odd sized CapXon
Good point, been reading about that several times but haven't ever done it yet. What size of a resistor should be used?...Leave a comment:
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Re: Be Quiet BQT E5-500W recap, odd sized CapXon
Thank you very much for comments! This PSU is going for a friend, so I'll have to make sure it stays alive as long as possible
I do happen to have a black Yate Loon 120mm fan, which might be an appropriate replacement for the current fan, or I could take an orange one from Nexus 350W PSU. Also found a T&T 120mm 1.2A 12V, model 1225HH12F-PD1, seems like CFM is around 145. Any experiences on those? It seems to be from a Fujitsu Siemens PSU (NPS-230CB B).
I'll post some updates when I've done the recapping...Last edited by wacce; 06-17-2012, 10:49 AM.Leave a comment:
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Re: New Members - please post your introductions here
Hello,
Been lurking around the forums for a few months, so why not to introduce myself now that I've actually built up the courage and started posting
I am a university student in electronics from Finland, and yeah I'm still a young chap. I've always been into computers though, ever since I got my first computer when I was 11. Being the older son, I was given upon the responsibility of maintaining it too. Combined with personal interest, that really is a great way of understanding these small...Leave a comment:
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Be Quiet BQT E5-500W recap, odd sized CapXon
Hi there badcaps!
I've been reading the forums for a while, and done several motherboard/PSU recaps with success. This is my first time posting though, as I've run into a problem.
I've got Be Quiet BQT E5-500W, which is filled with CapXon KF series. When plugged into a motherboard the motherboard led turns on, but when trying to power the board on, fans will turn a little and then nothing. Measured around 5.2V on the purple cable though. I opened the unit, and most of the caps are actually fine, but there was a couple of bulging 2200uF 6.3V CapXon caps, sized 8x25. First...Last edited by wacce; 06-16-2012, 03:29 PM.
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