+af0l Posted November 26, 2016 Share Posted November 26, 2016 So, I decided to recap my Lynxes MKII the other day. Both had beeen working OK before, age considered. Both had leaking C39 so I was glad i finally got to it. The first one went fine. The second one, however, didn't. After I finshed and assembled it back, I get only black screen when I thurn it on. The power led is turned on (but faded). The backligkt turns on, and a high pitched whine is coming from the speaker. It is unresponsive (have to take batteries out to turn it of). Any ideas? Please? Quote Link to comment Share on other sites More sharing options...
GadgetUK Posted November 26, 2016 Share Posted November 26, 2016 (edited) So, I decided to recap my Lynxes MKII the other day. Both had beeen working OK before, age considered. Both had leaking C39 so I was glad i finally got to it. The first one went fine. The second one, however, didn't. After I finshed and assembled it back, I get only black screen when I thurn it on. The power led is turned on (but faded). The backligkt turns on, and a high pitched whine is coming from the speaker. It is unresponsive (have to take batteries out to turn it of). Any ideas? Please? If it worked before the re-cap, then it has to be related to the caps replaced. You should inspect each one replaced carefully to make sure there are no shorts, solder splashes, broken connections, and that the correct caps are in the correct positions. Also check the ribbons are connected properly - sometimes you can get behaviour like that because the screen ribbon isn't making a good connection. Edited November 26, 2016 by GadgetUK 2 Quote Link to comment Share on other sites More sharing options...
+af0l Posted November 27, 2016 Author Share Posted November 27, 2016 Well there was a cold solder there, but thatt does not fix it. Another thing, serious noise ffrom the speaker (like old tv). I measured the voltages and I'm getting clean 9V on C39 and measly 2.6V on C41! But everything seems fine to the eye... Any ideas are welcome... Quote Link to comment Share on other sites More sharing options...
+af0l Posted November 27, 2016 Author Share Posted November 27, 2016 I also switched the display from the working Lynx, to no avail. Must be something really dumb I did... Quote Link to comment Share on other sites More sharing options...
+af0l Posted November 28, 2016 Author Share Posted November 28, 2016 So, after reading a bit, I soldered an iPhone cable that kitty went badass on to the C41 and voila, the thing works. I'm going to convert both Lynxes to 5v and lipo anywy, so this is just fine I'd still like to know what I managed to mess up, but I guess it does not matter now... Thank you for your input, GadgetUK! Quote Link to comment Share on other sites More sharing options...
ATLynxer Posted November 28, 2016 Share Posted November 28, 2016 So, after reading a bit, I soldered an iPhone cable that kitty went badass on to the C41 and voila, the thing works. I'm going to convert both Lynxes to 5v and lipo anywy, so this is just fine I'd still like to know what I managed to mess up, but I guess it does not matter now... Thank you for your input, GadgetUK! image.jpeg Excuse me...(happy you solved) .have you connected the C41 to what with that cable? Quote Link to comment Share on other sites More sharing options...
+af0l Posted November 28, 2016 Author Share Posted November 28, 2016 Oh, that's just iPhone charger. Our cat got hold of it and it was gone, so I cut off the connector and soldered it to the 5v rail (minding the polarity). 1 Quote Link to comment Share on other sites More sharing options...
ATLynxer Posted November 28, 2016 Share Posted November 28, 2016 Oh, that's just iPhone charger. Our cat got hold of it and it was gone, so I cut off the connector and soldered it to the 5v rail (minding the polarity). Ahhh ok, thanks! Quote Link to comment Share on other sites More sharing options...
ATLynxer Posted November 28, 2016 Share Posted November 28, 2016 ....I have tried also on mine that solution now....I hoped to have the same effect of yours....(see my question here: http://atariage.com/forums/topic/99383-lynx-2-repair-help-needed-only-blank-screen/) but unfortunately for me the cat with a game inside goes on but always blank screen and no audio. I've measured the current at C41 giving the 9v to the plug and it's 3V. So I hoped to have life giving 5v with your method.... but it's not. Listen...if you can measure.... Also for you in the D10 diode, current seems to pass through? I'm sure D13 is bad but I don't know if I would obtain something changing it (anyway I've ordered it, I hope it will arrive soon) Quote Link to comment Share on other sites More sharing options...
+af0l Posted November 29, 2016 Author Share Posted November 29, 2016 Hmm, sure I will take it apart and measure the voltage (I asume you wanted that). I don' have it here at the moment, but will get back to you asap. 1 Quote Link to comment Share on other sites More sharing options...
ATLynxer Posted November 30, 2016 Share Posted November 30, 2016 Hmm, sure I will take it apart and measure the voltage (I asume you wanted that). I don' have it here at the moment, but will get back to you asap. Thank you, I'm looking forward to see your measurements. (P.S. yes, values in Volts using the diodes tester funcion. The one that make a buzz if there isn't resistance) Quote Link to comment Share on other sites More sharing options...
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