Toinet wrote:
On 8 nov, 22:32, "Michael J. Mahon" <mjma...@aol.com> wrote:Toinet wrote:On 8 nov, 04:46, "atfphotogra...@gmail.com" <atfphotogra...@gmail.com> wrote:Hello, I'm also confused as to the settings on the caps? What does the 40/085/56 mean?I'd like to help you but I can't. I would to share two pictures: - my IIc dead capacitor:http://www.brutal-deluxe.fr/public/CAP_IIC_MONITOR.JPG - my IIe PSU:http://www.brutal-deluxe.fr/public/CAP_IIE_PSU.JPG Remember the blinking LED on the motherboard! I was wondering whether this could be due to the capacitor, they are all full of "craquelures", oh! a French word.Don't know about the blinking LED (very improbable), but these are both examples of "X2" capacitors. Replacing them as described earlier should fix any problems related to them (except the residual odor ;-). -michael NadaNet 3.0 for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."In response to "(very improbable)": http://www.brutal-deluxe.fr/public/APPLEIIE.AVI A 6.8 MB video I did on 30/JUN/2009 with my digital camera.
I didn't mean that the blinking itself is improbable (though it is quite unusual!), but that the failed line filter capacitor would not cause the LED to blink. I can't view your video as I'm writing this, since the computer must be restarted to complete the Quicktime upgrade, but it sounds like a case of the power supply being *just barely* overloaded, so that it goes into shutdown after a short time, then attempts to restart and repeats this cycle endlessly. Most likely culprits are the electrolytic capacitors just after the bridge rectifier--the only big electrolytics on the line side of the supply. When they age, they become less effective due to both a loss of capacitance and an increase in equivalent series resistance. This erodes the supply's margin until it usually just stops working. Yours is a special case, where it is working for a short time, to blink the LED, then shuts down. -michael NadaNet 3.0 for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."