Re: Snap in Capacitors
FIRE!
ah, fun! i hope nobody got hurt... pics?
FIRE!
ah, fun! i hope nobody got hurt... pics?
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sigpic
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Re: Snap in Capacitors
No, I wasn't hurt. Glad I wore sunglasses! When I saw the cap jump, I backed away and then it exploded in flames. It exploded so hard it ended up jammed into the heat sink next to it so I had to pull out enough guts to loosen it up. You can see the dent on the top where it was wedged. One pic is the guts I pulled out and the other pic is the shell that remains. I think the fire burned up most of the oil because the surrounding board was mostly covered with tissue and metal bits.Originally posted by ratdude747
I ordered replacements from Digi-key (thankfully we are both in MN) and I hope that will fix my tv.Attached FilesComment
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Re: Snap in Capacitors
edit: lol just noticed this useless post is my post #900
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Re: Snap in Capacitors
well, to the book of recapping rules, add:
"if it hisses, BACK OFF AND PULL THE PLUG! NOW!!!"
damn. got the fireworks going. c hegge would be proud (he loves to throw bad caps in fires; see his sig)
gives new meaning to the joke known as hongkongflyapart, LLC!sigpic
(Insert witty quote here)Comment
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Re: Snap in Capacitors
yeah, that's how I looked!
Really hope the power surge that tripped my house breaker didn't fry anything else on the tv. Is this likely? Nothing seems wrong to the naked eye or nose but I haven't exposed every board to look at it, either. All the connectors that were plugged into the board look perfectly normal.Comment
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Re: Snap in Capacitors
Also add "If you really must troubleshoot capacitors on a live tv, wear safety glasses"Originally posted by ratdude747Comment
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Re: Snap in Capacitors
lauriloo; that's pretty cool
What was the brand of the capacitor?"The one who says it cannot be done should never interrupt the one who is doing it."Comment
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Re: Snap in Capacitors
The infamous Samwha brand that is plaguing lcd tvs.Originally posted by Per Hanssonlauriloo; that's pretty cool
What was the brand of the capacitor?
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Re: Snap in Capacitors
Oh yes, the remaining bulging capacitor definitely = toast.
Glad you're OK - hopefully after replacement everything will be working fine
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Re: Snap in Capacitors
Replaced the caps myself (first time soldering a board!) and the two snap in fuses that were blown. The tv has been on for five hours so far, no hissing or issues whatsoever. yay!Comment
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Re: Snap in Capacitors
WOW. After such a cap failure like that it would be a good idea to check the power diodes fuses and current limiting resistors BEFORE applying power for the first after a recap job.Comment
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Re: Snap in Capacitors
good. now you see why many of us keep our eyes out for dead flatscreens on craigslist and in dumpsters, they are often a case of blown samwha's/capxons... a recap later and they are as good as new, most likely much better.Originally posted by lauriloosigpic
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Re: Snap in Capacitors
'Snap-in' is just a way to hold them in place until soldered.Originally posted by mwturtle1Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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New Cap Bulging
I had or maybe still have the same problem with the same 47LC7DF-UK after seeing the pics I noticed 3 of my 2200uf caps bulging / split, so I ordered 5 2200uf panisonic 5000hr caps from Digikey. After replacing these the set came back on and functions. But there is one that popped after I installed it. So thinking it was my installation I replaced it again. Turned the set on and it worked but after letting it run for several hours I noticed the same cap location was bulging. since I'm a Newbie I was wondering what is the major cause of a new Cap going bad so quick. Under voltage or Over or a short.
Maybe its time for a new board but spending 10 bucks compared to 120 is more my speed.
Thanks
DhackComment
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Re: Snap in Capacitors
Overvoltage, capacitance being too low or installed backwards.
What series of Panasonic did you buy?Comment
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Hi, I have some 32 bits computer motherboards that need repair, as they fail to
power on.
Here are some examples :
(N.B. "capacitors" indicated here are electrolytic capacitors located in the onboard
switching supply area).
(N.B. #2 : I could not find a 3300 microF aluminum-polymer with a higher voltage
than 6.3 V.)
1 - Motherboard #1 : this is an Asrock K7VT2 (socket A) that still works well. To put it on test
I replaced capacitors with aluminum-polymer.
3300 microF/6.3 V. x 4 replaced by 3300 microF/6.3 V. (KYOCERA... -
hey all, iv got my favourite battery charger here which iv had for many years probably 15 years now or maybe even more. it still works good but thought id open it up to clean the dust out of it, lots of dust inside but now its clean and noticed 4 capacitors inside it and wondered if i should replace them.
it has inside:
2 x 47uf 16v caps 105c branded as Su'scon (lol sounds sus to me)
2 x 470uf 16v LZ105c branded as G.Luxon
not heard of these brands are they any good?
iv attached photos of the charger and the board inside for an idea on the type of... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
I have a 2007-era Panasonic VHS combo that is full of of Elna RJG capacitors. I am trying to test the capacitors to diagnose the machine and then select replacement capacitors but I can not find any datasheets for them. I did find a Elna catalogue from 2007-2008 but there is no mention of this capacitor series. Where these specially made for Panasonic and so not made available to the public? Any ideas what to find out what the ESR values should be without the datasheets? They are all between 10V and 50V and 47uF and 1800uF. None are leaking or bulged but I know that they need to be tested to be... -
I picked up a 70" Samsung UN70TU7000WXZA. The original owner said they were watching it when the power surged and knocked it out. I pulled the back off the TV and disconnected the main board from the power board, and the LED backlight came on, which I was told meant the power board was good. When everything is plugged in the standby light will not come on, looking at the main board BN94-17775A with a thermal imaging gun I can see one of the chips labeled 3202 is 251 degrees F just sitting idle. I found a replacement board, BN94-16115X; this board has the same symptoms, except it is a different...
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