Just for general info: the aforementioned Acer monitor from Liz had several obviously bad caps in the power supply section. They were all from the same manufacturer and the worst were all the same value. As mentioned below, I just replaced all of them while I had it open - well, not the very largest, or the very smallest, nor the solid ones. The big and small ones looked pretty good, with no signs of bulging or leakage and I'm hoping they were made on a different assembly line, since the values were way different from the bad ones. It has been running for about 18 hours, played a full DVD movie, and returns from powers-saving mode. I'm not entirely convinced that one of the IC's is not running at the edge of its specs, since there was some evidence of heat there. Also, on the video output board, there was a poorly adhered heatsink that I reattached with a spec of super glue and a small gob of silicone fixant. It was kind of tipped over onto another chip and not doing its job - probably not an electrical problem. I am glad, and hope for the future, that there is nothing wrong with the part that would normally encompass the inverter, because it is integrated into the LCD itself and runs the full width of the screen. If I were to be very careful, I could restore the bad caps and try to take advantage of Acer's (so far) excellent customer service and warranty service, but the way the monitor was constructed insured a lot of evidence is left of any repair work (special tapes, tricky plugs, etc - no seals though). I have also had to do a capacitor replacement on my otherwise very nice Samsung SyncMaster 226BW. Thank goodness for forums! By the way, I am down to a single machine running MythBuntu/MythTV as far as Linux goes, although I am constantly using various Live CD's for the ease of use, testing, and tools they provide. I also have a couple of Android devices, but haven't dug inside them much except to 'root', etc. Thanks Liz also - the time was enjoyable, finding the parts helped me find some other stuff, and it worked! It goes very nicely with my Acer 23"LCD/LED. DaveC On 1/6/2012 11:51 AM, John Stoffel wrote:
Tim> Funny you say that. We have dozens of those monitors where I Tim> work and we pick one day a month and for about 2 hours we set up Tim> a assembly line. One person desolders the bad caps, another Tim> person solders on new ones, then we have one monitor we use as a Tim> test rig. We can crank them out at this point. Though we long Tim> ago figured which 5 caps are the likely culprits and we just Tim> replace them all, even if the cap looks good.
I love the Samsung 204Bs, I wish I could get more of them. Nice 1600x1200 display, pan/tilt/height adjustments, etc. Got any you want to sell?
John _______________________________________________ Wlug mailing list Wlug@mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug
-- David P. Connell "Watch where you're going; remember where you've been."