Decon garbage
Repairing Behringer EUROLIVE B1500D-PRO
They used the crappiest caps ever...decon and ksd
They used the crappiest caps ever...decon and ksd
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Re: Decon garbage
85' caps in a switching supply - insane. -
Re: Decon garbage
they are what puts food on the table for techs.Comment
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Re: Decon garbage
Nasty Ive seen a fair few of these fail, also can you upload pic after recap ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Decon garbage
decon=rat poisonComment
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Re: Decon garbage
Ah--But!
What you gotta consider is--Just How many Hours/Years on this thing? Modern electronics place MUCH more strain on its components than any stuff made say even only 30 years ago.
If say only 1-2 years life,--Thats unacceptable.
If however its say 6 years, Or More--What you griping about? Change the buggers, charge your repair fees and move on!
6-8 years may well be 10-20,000 hours use. Not even the best consumer (Note--NOT Professional or aerospace) grade caps are rated for 20,000 hours, Best you'll get in consumer grade crap is 10K!
You wanna spend $30 or much more bucks Per Cap for Military/Aerospace?--Nah, Didn't think so, and consumers wont either, especially as the item is designed-life anyway and will soon be superseded/made obsolete, by summit much better and prolly cheaper!TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: Decon garbage
Those endurance tests rate (and test) the caps at their maximum temperature (105°C), maximum voltage, and maximum ripple current, for thousands of hours, continuously (24/7), from the date the caps are manufactured. Theoretically, at lower temperatures and lower ripple currents, you should be able to extend the life of the cap considerably, but those continuous endurance tests don't take into account the unwanted chemical reactions and processes that take place during non-powered storage (although heat does expedite chemical reactions). The shelf life test has often been much shorter than the load life test (500 to 1000 hours continously at the rated temperature - that's anywhere from over 2 weeks to over a month).
Using 85°C GP capacitors on the output of a SMPS is indeed a gross misapplication, but I'm pretty sure the fact that they are Decon made their failure all the more a likelihood.Last edited by Wester547; 12-05-2016, 11:01 AM.Comment
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Re: Decon garbage
Yup, Behringer loves to use Decon caps. But you got extra-screwed with those 85°C-rated caps.
I have an Europower EPQ1200 in the closet full of these Decon caps as well, except mine are the SHL series, which are supposedly their low ESR series rated for PSU use and rated for 105°C. I haven't recapped it, mainly because they are quite big and will probably cost quite a bit... and I don't use that amplifier very often (maybe take it out of the closet once a year), so I that's why it's not recapped yet.
CRT monitors and TVs often used 85°C caps and rarely had issues. Mostly small caps drying out on the neck board - but you know how hot that board can get as it's attached to the back of the tube (and very near the heater). That said, I have yet to see a Sony CRT TV or monitor with bad Nichicon VR caps. Or a Panasonic with its own Panasonic general-purpose caps.
Exactly.
You can bet that general purpose caps from the big Japanese manufacturers would have lasted much longer.Last edited by momaka; 12-14-2016, 05:46 PM.Comment
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Hello
Got this speaker from a friend , defective. Power led comes on and off , in a loop.
Disassembled, got the board out, and after a bit of measuring I found a low resistance on a 5v6 line. With a bit of current I found a transistor heating up on that line (labeled T1 and 113 as on pic).
After removing this guy, I got a value of 0.7 in diode mode on that 5v6 line, which before had 0.02 or something like that.
I tested powering it up without the IC, and the speaker turns on and stays on, and works fine
Still, I need to replace this transistor.... -
Friend gave eurolive b115d PA speaker that wouldn't power on. I replaced a cap and it powered on. However once the metal cage that encloses the power supply board was screwed back to the control/faceplate the lights pulse on and off and no sound.
Works fine when not screwed back together.
I probed between metal cage and control/faceplate and I am getting a high voltage of 75v ac.
Any thought always appreciated! -
Trying to repair SMPS issues with two of these units. -
I’m working on re-capping the power board caps on a Klipsch The Fives audio speaker system. I can’t locate a replacement for these original caps that are labeled “Decon SH PET”. I have three of these on the board with the electrolytics. They are supposed to be a film type capacitor, but they look like a radial mount electrolytic. Everything I find they look completely different, usually a square type body. The two values I need are 16V 470uF and 35V 47uF. I’ve got all the other caps in my cart already from Mouser, so if there’s a replacement there, I would prefer to order from... -
Hi Guys,
I need to replace the dual rail power supply in this unit (board damaged irreparably - by me!).
I have the schematic (attached) - but it does not (unhelpfully) show the value of the Pos and Neg rails.
Someone has suggested possibly + and - 42V, but as the smoothing caps are only rated at 50V this could be a bit close to the mark.
I am hoping Alxxxxpress might be able to come to the rescue and I am thinking somewhere in the 32V 8A region? Any suggestions/observations would be welcomed.
Many thanks.
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