Re: HM HN, Dates for the bad boys?
I understood it was 2002 to 2004 but I don't know the months.
I know Dell pulled all their Intel boards with them in March 2004 but that doesn't tell me when the bad caps stopped.
Not really concerned with new parts.
Wanna know to know which existing motherboards to expect HM/HN problems on.
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Hello All, I have on the bench a couple of PSU's which have some failed Nichicon PL series caps. They didn't "puke" their guts through the top, but instead "diarrhea'ed" corrosive brown electrolyte through the bottom, down the legs and onto the board. On one cap, the electrolyte rotted the cap right off the board leaving 2 little stubs, and also corroded a trace on the foil side.
The PSU's are Power-One MAP series and are ringing-choke topology. The semiconductors have date codes in 1993. The PSU's were used in a commercial application, fan-cooled. They had failed... -
I recently acquired a set of Bose Roomate speakers from the mid to late 80's. Basically the right speaker cabinet is completely passive, and the left one has the power transformer and amplifier circuit in it. Out of curiosity, I opened it up to see what the circuit looked like. Looks like they used all Nichicon VX (2x 4700uF/16v for smoothing off the bridge rectifier), a couple random Nichicon SE series sprinkled on the board, and what really caught my eye - 2 yellow sleeved Nichicon caps (both 1uF/50v with no real series marking. Below are pictures of the caps. The only thing not shown in these... -
I want to calculate capacitor ESR referring to below guide.
https://forum.digikey.com/t/calculat...-from-tan/2633
I must find out dissipation factor(Tan(δ)) for nichicon lxj series(6.3v 1500uf,25v 1000uf ,10v 2200uf)
I finally found out datasheet which has all series of nichicon capacitor.But unfortunately, It removed old nichicon capacitor.
Is there anyone who still has old nichicon datasheet which has information of LXJ series? -
A few days ago,I destroyed one of my japanese retro game console by pluging it to 220v outlet.
https://www.badcaps.net/forum/troubl...e-been-blew-up
and I finally fixed​ this retro game console by soldering varistor and glass fuse.
But I noticed that When I measure voltage of PSU's 5pin connector, it is 8.80-9.07v, 5.13v,3.40-3.48v,GND,GND instead of its rated voltage of 9v 5v 3v GND GND.
I have spare console... -
Hi guys.I have two EV dsp processors and before two years i do full recap to both. The units have before recup thousands hours running.On output input coupling caps (16 pieces) i solder nippon lxz series 100mf 63v (this time i don't have other stock) i know is low esr caps.Last week have found and order nichicon fw standard audio series.Is a good reason to replace the nippons lxz with nichicon fw ? The units get better sound? Or get worse?Thanks for any advice.
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