Snap in Capacitors

[ratdude747]

Re: Snap in Capacitors

FIRE!

ah, fun! i hope nobody got hurt... pics?

[lauriloo]

Re: Snap in Capacitors

FIRE!

ah, fun! i hope nobody got hurt... pics?

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.

I ordered replacements from Digi-key (thankfully we are both in MN) and I hope that will fix my tv.

[Scenic]

Re: Snap in Capacitors



edit: lol just noticed this useless post is my post #900

[ratdude747]

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!

[lauriloo]

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.

[lauriloo]

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!

Also add "If you really must troubleshoot capacitors on a live tv, wear safety glasses"

[Per Hansson]

Re: Snap in Capacitors

lauriloo; that's pretty cool
What was the brand of the capacitor?

[lauriloo]

Re: Snap in Capacitors

lauriloo; that's pretty cool
What was the brand of the capacitor?

The infamous Samwha brand that is plaguing lcd tvs.

[seanc]

Re: Snap in Capacitors

Oh yes, the remaining bulging capacitor definitely = toast.

Glad you're OK - hopefully after replacement everything will be working fine

[lauriloo]

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!

[Sparkey55]

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.

[ratdude747]

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!

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.

[PCBONEZ]

Re: Snap in Capacitors

I have an LG LCD tv (47LC7DF-UK) the picture only comes up after numerous times turning the set on and off. I hear buzzing coming from the SAMWHA capacitors (450WV 150uF) and wonder if these are snap-in capacitors. The name is confusing and I think that I can replace them by pulling them out and pushing new ones in. However I looked at the back and see the soldered parts and wonder if I am just delusional. Does anyone have any input? Thank you!

'Snap-in' is just a way to hold them in place until soldered.

[dhack61]

New Cap Bulging

I have an LG LCD tv (47LC7DF-UK) the picture only comes up after numerous times turning the set on and off. I hear buzzing coming from the SAMWHA capacitors (450WV 150uF) and wonder if these are snap-in capacitors. The name is confusing and I think that I can replace them by pulling them out and pushing new ones in. However I looked at the back and see the soldered parts and wonder if I am just delusional. Does anyone have any input? Thank you!

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
Dhack

[seanc]

Re: Snap in Capacitors

Overvoltage, capacitance being too low or installed backwards.
What series of Panasonic did you buy?