How-To: Common Cause Of Flat Panel PS Failure

Look for highest ripple current rating. Nichicon HZ, HN, Panasonic FM

G=B2

Correct. 'Bob Villa' apparently wants repeat business as his high ESR caps will fail quickly. Note, 'Bob', good quality low ESR caps aren't real expensive - you just aren't going to buy them at Radio Shack or Caps R Us.

PlainBill

Got them from Newark (Illinois Cap. and Rubycon)

Going to a higher voltage usually raises the initial ESR. That kind of defeats the purpose of repairing the equipment.

Which series? The brand tells you nothing about their specifications.

Opposite, higher voltage rating usually lowers ESR ;) Check the datasheets.

Grant.

you can build yourself a very usefull esr meter to identify quickly the faulty capacitor ...

schematics here, simple analog to sophisticated digilat esr meter.

regards,

d/or

her

ESR

n't

I'll let you know when they fail...dip-s*it! (Original crap lasted 5 yrs)

FAIL. You're out of your element here. Go back and troll alt.home.repair. Your bullshit might be better told there where you don't have real repair techs who did/do this kind of stuff for a living.

gh

aps

I'm only relating what I did/or found to fix a problem I had...if you s******ds want to add to that...your purgative. Sorry if it has been covered here before.

Dipshit? You don't even know how to snip a sig file, let alone anything about real troubleshooting. I've been finding and replacing bad electrolytics for over 45 years.

It depends on the construction ot the Electrolytic. Some larger size cans have four identical capacitors in parallel, inside the can to lower the ESR. A lot don't.

I'm not entirely sure that I go along with that, Michael. The chart of 'expected' ESRs on the front of Bob Parker's meter, would suggest that increasing the working voltage for a given capacitance value, produces ever lower ESR figures, until you get up to about 100v working, when the trend reverses slightly, and small increases are then recorded ... I've always found that chart of his a pretty good guide.

Arfa

I've seen some brands that didn't follow that chart very well. The cheaper brands seem more like they set the spec with a dartboard. I had datasheets for over fifty brands t one time, and some so called low ESR were no better than the lowest grade of standard electrolytics. Other do follow Bob Parker's chart quite well.

Even Bob P. isn't very happy with the chart - it is only a guideline, not a code sheet...

John :-#)#

Alas, the mastertech doesn't understand sarcasm.

You can't even do sarcasm well, and I'm not being sarcastic.

The only thing you do well...other than being a critic...is please yourself.

Yawn. I built KU band communications equiment that is aboard the ISS, and all you do is whine.