mcampbel14 Posted January 10, 2003 Report Share Posted January 10, 2003 hello all, I'm relatively new here. I have a R700 that I've been using happily for about 6 months now. I recently bought a used R700 from someone that, after I had already gotten home, turned out to have an issue with the headphone jack. Basically the sound goes on and off BUT if you lightly press the whole thing down the sound is clean and perfect. It seems like something that would be relatively easy to fix (just putting a folder up piece of paper between the case and the actual jack fixes the problem temporarily).....I'm going to have a go at it tonight. Does anyone have any suggestions? any input would be appreciated Thanks, Mark Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 14, 2003 Report Share Posted January 14, 2003 hi, I used to own a R700, and the exact same thing happened to me. Its a fault by design - the problem first started lightly and then got worse and worse - a more detailed explanation can be found here :: http://www.minidiscussion.com/boards/repai...x.cgi?read=3700 by the way, the cost of fixing it was too much, so I bought the MZN1 - the R700 is now completley out of operation :roll: Quote Link to comment Share on other sites More sharing options...
mcampbel14 Posted January 15, 2003 Author Report Share Posted January 15, 2003 This is sort of what I thought...thanks for the response. Does anyone have any experience with this sort of repair? Since it is just going to get worse I don't really have anything to lose by trying to repair this myself (since I know that Sony automatically charges $90 for repair as a minimum) If David Popovits is reading this......could you walk me through it? Is is just a matter of unscrewing everything and looking for a crack in the sodder and redoing it? Help. Thanks. Mark Campbell Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 15, 2003 Report Share Posted January 15, 2003 well I tried to repair it....but I couldnt fix mine- the thing is this line out problem occurs for a number of different reasons on the R700 - so the cause of your problem might be different from mine and you may be able to repair it. I know what you mean about the service costs, so if you feel you want to, download the service manual here http://www.minidisc.org/manuals/sony/servi...vice_manual.pdf Its got all the diagrams for your model, load up page 39 on the service manual and zoom into the bottom left - there you will see the headphone port, it will highlight which joints are LEFT,RIGHT, and GROUND/EARTH. *if you do attempt it, just make sure you take care of the ribbon cable(s) -they can be easy to rip! hope it helps Quote Link to comment Share on other sites More sharing options...
mcampbel14 Posted January 15, 2003 Author Report Share Posted January 15, 2003 Thanks for the response Dal...I went to RadioShack and got the soddering iron and the sodder....I'm going to attempt this badboy...YIPES. I really think it is just a loose sodder joint (the sound is beautiful most of the time...but if you wiggle the port at all the sound starts to fizzle. If anyone has any last minute advice I'd love to hear it...I won't be doing this til later tonight. Thanks for the help. Mark Quote Link to comment Share on other sites More sharing options...
David Popovits_ Posted January 16, 2003 Report Share Posted January 16, 2003 Further vto my answer in the repair board, i can tell you that in almost all cases the amplifier IC is to be replaced. If you are lucky it is a matter of resoldering the amplifier IC. Pay attention; the space between the pins is very small and you may cause severe problems if you don't have the correct solderring iron and good knowledge in thius field. David Popovits Quote Link to comment Share on other sites More sharing options...
mcampbel14 Posted January 16, 2003 Author Report Share Posted January 16, 2003 Hello All, I just thought I'd let you know the results of my little experiment. First of all I'd like to thank David for responding to my inquiry. Anyhow, I removed all the purient screw and exposed the mainboard and then I hit a major issue.....I couldn't figure out how to expose the inside of the mainboard because the circuit ribbons seemed to make such an exposure impossible....and looking at the soddering on the ribbons I felt reattaching those would be beyond my ability. So my answer was this. While it was open I noticed that when the jack was pressed down very slightly all problems went away. So I wedged a tiny piece of paper into the joint there with a little superglue...and voila! My headphones now sound amazing So when technical knowledge fails fall back on ingenuity. This is a subject that I do find very interesting though. David...would you, or anyone else, be interested in starting a portion of the webpage for those who want to learn something about taking apart and reassembling these badboys? I wasn't able to find anything about it online....but I think, given how fragiile these things are and how expensive they are to fix, that most people are in my boat.....i.e. you may as well try to fix it because it isn't worth it to send it off to be repaired. I DID notice while I was in there how far the quality has been reduced since the days of my R-70...which was pretty solid inside and out. Anyhow, thanks for all of your help. Mark Campbell Quote Link to comment Share on other sites More sharing options...
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