Michael wrote: > On Wednesday, 28 October 2020 19:27:06 GMT Dale wrote: > >> I'm thinking about replacing that cap and seeing if it works. I've >> repaired a few monitors that way but my question is, should I trust it >> after replacing that cap even if it works?? Should it be load tested or >> something? Does the protection circuitry only work once? > It depends what was damaged and the cause of it. It could be the capacitor > reached its predicted end of life. It could have been a transient voltage, > in > which case more things in the protection circuit (diodes, resistors) may have > also been damaged. > > I had an old desktop which during a lightning storm ended up with a blown PSU > and a blown winmodem. The winmodem was unrepairable, but the PSU survived > following the replacement of a single capacitor. :-) > > For the cost of a capacitor I'd give it a try and then measure the output > voltages under load. >
Well, we getting rain but I haven't heard a single bit of thunder or any light blinking. Nothing really bad anywhere near us either. It's the hurricane thing again. I might add, I got surge protection coming out my ears. One in the main breaker box that should protect everything. It's installed right below the main breaker. Another one at the wall plug where I plug my UPS in. The UPS also has surge protection as well. The likely hood that a surge made it through all that, pretty slim. The one in the breaker box alone should stop about anything short of a direct lightening strike. Given all that, I think a surge can be ruled out, in this case anyway. ;-) End of life. That is my bet. I did a search for when I ordered the power supply. It is within a month or so of being 10 years old. I may replace that capacitor just for giggles but honestly, I got my money out of that thing a few years ago. I'd be worried about the other capacitors in there too. Are they about to pop as well?? Who knows. >From my research, the new P/S isn't a great one but it is a decent one. It cost me a little more than my old one which lasted a good long while. I may order a new one later on and pick a really good one. I used to go to Jonnyguru website to see what is good and what is not but it seems they haven't done anything in a year or more. I don't know if they stopped doing it, got sick or what. They used to test them pretty good when I looked before. Just surviving their tests was generally a good thing. They stressed them for sure to see if they could handle what they claim they can. Anyone else notice that cheap capacitors literally blow up while the good high quality ones just dome up on top? I had a really cheap one go out in a power inverter. It barely had enough left to see the specs. I've seen high quality ones go out from age and they just dome up. You have to look close to even see it is bad. I don't recall ever seeing one blow up tho. I think I'm going to check the age of my mobo right quick. :/ Dale :-) :-)
