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06-30-2015, 07:23 PM   #16
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QuoteOriginally posted by Ex Finn. Quote
A "Double layer" super capacitor should be good for thousands of cycles...?
According to the datasheet::

"Unlike batteries, the number of charging / discharging cycles unlimited and rapid charging / discharging is possible."

06-30-2015, 07:35 PM   #17
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This is the backside of the K-x mainboard, notice 'supercap' in lower left corner.
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06-30-2015, 08:31 PM   #18
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the same happened to my new K-3ii, replaced the battery ( the first time) within couple of seconds and time/date settings gone, all the rest was fine,Hmmmm??
06-30-2015, 08:53 PM   #19
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QuoteOriginally posted by i_trax Quote
the same happened to my new K-3ii, replaced the battery ( the first time) within couple of seconds and time/date settings gone, all the rest was fine,Hmmmm??
I would contact your seller. As noted above, the date/time is usually kept with either a capacitor or a large diameter button cell similar to that found in a PC computer. The capacitor should be good for decades with regular use. The button cell for several years. Neither type should be bad on a new camera.


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07-01-2015, 07:18 AM   #20
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Steve, the specs on the original super cap in my Oly C5050 states 500 hours, have no idea what that means in real life use. The ELNA caps in the link are rated for 1000 hours.
07-01-2015, 09:37 AM   #21
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Endurance is the measure of how long the component will operate within specifications at the rated voltage and upper temperature category. The test methodology is outlined in the IEC60384-4 standards. 1000 hrs is like 41 day 16 hours. Capacitors are only operating when they are charging and discharging, correct?
07-01-2015, 01:21 PM   #22
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QuoteOriginally posted by Not a Number Quote
Endurance is the measure of how long the component will operate within specifications at the rated voltage and upper temperature category. The test methodology is outlined in the IEC60384-4 standards. 1000 hrs is like 41 day 16 hours. Capacitors are only operating when they are charging and discharging, correct?

Seems the rating is at upper temp as stated. Do these cameras get 85C? If its rated 1000 hrs, it means it retains its rated capacitance .2f for 1000 hrs. At 85C. There seems to be a rule with capacitors that is: for every 10C held under the rated max temp, you can double the life. So if the camera operates at 65C (shooting video?) You are still at a 4000 hr lifespan. Every failed supercap I have replaced had signs of leakage at crimp seam as evidence of rust. So it seems that if the capacitor never leaks, you should be good for many years.
07-01-2015, 01:35 PM   #23
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QuoteOriginally posted by pishta Quote
The ELNA caps in the link are rated for 1000 hours.
That is at the rated max temperature. The lifetime typically doubles for every 10C drop in operating temperature. So you should get a few years out of it at room temperature before the electrolyte dries out/decomposes. It is very inconsiderate of manufacturers to make a limited life component such as this effectively non-replaceable, in order to sell more camera bodies.

As much as these caps are touted to be the solution to all of mankind's power storage problems the fact is that they are an evolutionary dead end since being a capacitor the output voltage drops on discharge (as opposed to batteries where the output voltage stays more or less constant during discharge), making it difficult to recover all the energy that you'd put in. But I digress (I used to dabble in electrochemistry for a living) ...

07-01-2015, 03:29 PM   #24
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QuoteOriginally posted by pishta Quote
So it seems that if the capacitor never leaks, you should be good for many years.
The spec sheet says the shelf life is the same as endurance.
07-03-2015, 03:27 PM   #25
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QuoteOriginally posted by pishta Quote
This is the backside of the K-x mainboard, notice 'supercap' in lower left corner.
That "super cap" sure looks like a 3 volt Seiko lithium battery

Last edited by Ex Finn.; 07-03-2015 at 03:40 PM.
07-03-2015, 05:59 PM   #26
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QuoteOriginally posted by Ex Finn. Quote
That "super cap" sure looks like a 3 volt Seiko lithium battery
That was my thought as well (replaced a few of those over the years), but since the photo is a little blurry, I figured to simply let it rest.


Steve

Last edited by stevebrot; 07-22-2015 at 03:20 PM.
07-22-2015, 07:42 AM   #27
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I sent it in to Precision and it was turned around in a week. Did fixed that, cleaned the camera and recalibrated the AF. This K30 is sharp now! Impressed with the work they did.
07-22-2015, 08:30 AM   #28
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QuoteOriginally posted by Spodeworld Quote
I sent it in to Precision and it was turned around in a week. Did fixed that, cleaned the camera and recalibrated the AF. This K30 is sharp now! Impressed with the work they did.
Same here, Precision fixed this issue on my K-3. All good now.
01-09-2016, 08:27 AM   #29
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QuoteOriginally posted by pishta Quote
Steve, the specs on the original super cap in my Oly C5050 states 500 hours, have no idea what that means in real life use. The ELNA caps in the link are rated for 1000 hours.
Thank you Pishta that give me an idea about supercap. I bought it from Ebay and replaced it myself. i am not a repairer but after trying i found it not hard to disassemble my K-30 which had problem more than a year. Now i will keep it together with K-5 .
01-11-2016, 08:11 AM   #30
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Glad to hear it worked out. The Kx isnt that bad to take apart either, no weather seals but just a few accessible ribbon cables.
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