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Registered Member #599
Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624
I have extreme failure i want to share with you guys :)
And video is more than 1000 words so:
No one was hurt because i knew very well something like this can happen so we had necessary safety precautions. Cleaning of floor and ceiling took over 3 hours.
Why did it happen? - I dont know. Maybe something arced over or capacitor string had runaway failure. Lesson learned hard way.
Registered Member #599
Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624
Actually i was roughly 1 meter away from the doubler when it blew up. Between me and the doubler was 25mm thick MDF plate and i was wearing full face shield and hearing protection.
Registered Member #3610
Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
Nicko wrote ...
Conundrum wrote ...
Bad caps = KABOOM! (note- this monitor was made in 2005, at the height of the bad caps fiasco) Things haven't improved much it seems.
FWIW, I have a Samsung R74-series 40" LCD TV that has an identical standard failure mode in its SMPS - I just re-capped it with decent Panasonic caps and its fine now (lots of forums discussed this).
The annoying thing is that Samsung are generally regarded as a very good quality make, and even they had problems with this (my TV dates from early 2006, so probably made in late 2005).
The bad capacitor fiasco was great, I got a good pile of free equipment out of that, it was all nice and easy to fix. :)
I didn't take pictures of the damage, but I've had a number of mosfets explode. I had a half bridge running when I turned the juice up too high and BANG, bits of plastic shrapnel whizzed by my face. I place a shield of some sort over such things now when in the testing phase.
I recently stuck a lytic in backwards by accident and didn't notice until it vented a jet of awful smelling smoke right in my face while I was hunched over it with a scope probe. Thankfully it didn't blow the can off, I've seen that happen before.
Registered Member #3766
Joined: Sun Mar 20 2011, 05:39AM
Location:
Posts: 624
Kizmo wrote ...
Actually i was roughly 1 meter away from the doubler when it blew up. Between me and the doubler was 25mm thick MDF plate and i was wearing full face shield and hearing protection.
Registered Member #599
Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624
Me and capacitor banks just dont mix
I knew this was going to happen sooner or later so my bank is put together in a way that lets failing capacitor to fly out without damaging anything else.
Terminal piece and can were left attached to busbars while bottom end and actual capacitor element flew across the room :p
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pics of blown Electronics.
