CurtPalme.com Home Theater Forum

[macgyver655]

So what if I were to say that age(years) by itself has no affect on the performance of it?

[Nashou66]

[macgyver655]

[macgyver655]

[Nashou66]

Mac, what would you do?

nashou

[macgyver655]

[Nashou66]

Ok, good answer and this is what i hope you were doing.

Now, I googled stuff long ago and have hundreds of book marks from past AVS, Curtplame.com ,AVforums, and just almost every passive component company application data sheets. I just have got very interested in Electronics.

I also change caps out with newer technology, better ratings on all parameters for the fun of it and in a hope it will help my beloved PJ's last longer and give optimal performance.

At the onset of my dive into electronics first changed out some caps on my marquee because i found they were in fact leaking, a few popped tops. this was in my first marquee 8000. the caps were in the LVPS, leakers, then the HDM one popped cap. and another leaker on the CVA. I had so much enjoyment that i began to google all I could about upgrading parts in audio components and so forth, learning about ESR, ESL, voltage ratings, polar vs non polar film cap types, dialectics, resistor types, op amps etc.

Then I was turned to the P.O.O.G.E chronicles by Boilermaker. lots of interesting things in those articles and lots that can be applied to our PJ's POOGE for those who do not know stands for Progressive Optimization Of Generic Electronics. they would take older design or mass produced audio gear and some Video (DVD and Laser Disc) and look for ways to improve the equipment by only really changing out the generic parts with newer or better suited parts, not much in design changes but they did do that as well.
So i thought if it works there lets try it here. so thats how I began looking for better components for our Pj's. even if the parts I was replacing were not worn or failing, I just put in a better spec'd part or altered the values of certain parameters according to much of what found done by previous people.

there are still lots of things I have found as recently this theory by Ivor Catt "Nonsense about so-called “self-resonant frequency” of a capacitor."

Now there is some interesting stuff he puts out there, if you have not looked over his writings and theories i think you should.

here some interesting stuff here, Scandals in Electromagnetic Theory

Athanasios

[macgyver655]

[wallace123456]

Interesting thread..

Interesting write up: http://www.elna-america.com/tech_al_reliability.php

wallace

[macgyver655]

[Sparky015]

[macgyver655]

Very good, and correct. Based on the links posted here and others, we have determined that age(years) has no affect on cap performance. The only age related issue would be the sealant breaking down and allowing the fluid to leak out. But these sealants are good for decades.

But also know that cleaning boards with solvents can cause breakdown of the sealant and cause premature leakage so care must be given with cleaners and board wash.

We also now know that long term storage has little affect. Tests have consistently shown that 3 to 5 years dormancy yield no change and require no reforming. After that time they may require reforming but this can be accomplished by just using the device for 1/2 hour without disturbance allowing the process to take place. We found that even the defense dept doesn't throw out stock until 12 to 15 years which also means they would install and use a cap that is under this age limit and for who knows what time amount after that. And I'm sure that's premature by regular standards.

So if your projector has been stored for more then 4 to 5 years I would suggest turning it on without messing with it and just let it sit there and run for 1/2 to 1 hour. You could mute the tubes during this process. Then shut it down. Next startup should be fine providing there wasn't a problem to begin with.

If you use it occasionally then there are no issues.

So age(years) is not an issue.

If no one disagrees then we can continue. I'll continue in a few hours to see if anyone responds.

[draganm]

[macgyver655]

[draganm]

I am relaxed, for me that's about a 30% rage index. Sure, you can state whatever you feel about this or my comments. Just FYI, What's argued on this board doesn't really seem to affect what i do anyway. Kal told me this early on but I didn't believe it at first.
Oh and those nasty leaky caps I posted a pic of, that Convergence board actually worked just fine after being re-conditioned. i have to admit I didn't test it prior with those leakers in there though.....

[wallace123456]

[macgyver655]

[Nashou66]

this age thing has been discussed all over the internet and its tiring , some EE's thing it matters others don't. lets move on to the next topic about capacitors.

Athanasios

[macgyver655]

[macgyver655]