Atom Feed - Twisted Pear Audio Support - Topic:Soldering output buffers - 20Twisted Pear Audio Support - Atom Feedurn:twistedpearaudio-com:AtomFeed:TwistedPearAudioSupport:Topic:Solderingoutputbuffers-20:1Copyright 2024 Twisted Pear Audio Support2024-03-28T20:09:32Zhttp://www.twistedpearaudio.com/forum/Images/YAFLogo.pngForum Adminhttp://www.twistedpearaudio.comfeedback@twistedpearaudio.comBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-DoneganBrian Doneganhttp://www.twistedpearaudio.com/forum/profile/8-Brian-DoneganJohnGhttp://www.twistedpearaudio.com/forum/profile/26695-JohnGJohnGhttp://www.twistedpearaudio.com/forum/profile/26695-JohnGRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-WhiteJohnGhttp://www.twistedpearaudio.com/forum/profile/26695-JohnGYetAnotherForum.NETurn:twistedpearaudio-com:ftPosts:st1:meid24823:1Soldering output buffers<table class="content postContainer_Alt" width="100%"><tr><td>Compare pin-to-pin resistance of the working and non-working buffers. That should tell you if you cooked something (look for shorts).<br /><br />I assume the non-functioning Legato was functioning correctly before adding the buffers...</td></tr></table>2017-01-19T16:39:05-07:002017-01-19T16:39:05-07:00Brian Donegan<table class="content postContainer_Alt" width="100%"><tr><td>Compare pin-to-pin resistance of the working and non-working buffers. That should tell you if you cooked something (look for shorts).<br /><br />I assume the non-functioning Legato was functioning correctly before adding the buffers...</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid24820:1Soldering output buffers<table class="content postContainer" width="100%"><tr><td>I did solder them on. Now, I have one Legato that seems fine, but the other one is odd. <br /><br />Connected to a Placid BP HD (which is set and works for the other Legato), this one starts out with only 3v on one side and 5 on the other. <br /><br />Then, I raise the shunt current (either side - it doesnt seem to matter) and at some point I hear a click and the voltage jumps up to the 14.75 it is set for. <br /><br />Uplug it, wait a min and plug it back in, and now I have to crank up the shunt current again (above what it was before).<br /><br />Ive swapped Placids and Legatos and it seems to be this one Legato. <br /><br />Could I have overheated the buffers? Ive checked the solder joints on them. And looked at the transistors to make sure I didnt swap them.<br /><br />Thanks, John</td></tr></table>2017-01-14T20:44:41-07:002017-01-14T20:44:41-07:00JohnG<table class="content postContainer" width="100%"><tr><td>I did solder them on. Now, I have one Legato that seems fine, but the other one is odd. <br /><br />Connected to a Placid BP HD (which is set and works for the other Legato), this one starts out with only 3v on one side and 5 on the other. <br /><br />Then, I raise the shunt current (either side - it doesnt seem to matter) and at some point I hear a click and the voltage jumps up to the 14.75 it is set for. <br /><br />Uplug it, wait a min and plug it back in, and now I have to crank up the shunt current again (above what it was before).<br /><br />Ive swapped Placids and Legatos and it seems to be this one Legato. <br /><br />Could I have overheated the buffers? Ive checked the solder joints on them. And looked at the transistors to make sure I didnt swap them.<br /><br />Thanks, John</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid24787:1Soldering output buffers<table class="content postContainer_Alt" width="100%"><tr><td>Thanks.</td></tr></table>2016-12-20T18:15:31-07:002016-12-20T18:15:31-07:00JohnG<table class="content postContainer_Alt" width="100%"><tr><td>Thanks.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid24786:1Soldering output buffers<table class="content postContainer" width="100%"><tr><td>It is not strictly necessary to use hot air, but it does make the job easier.<br /><br />You can use a soldering iron, just do the big tab last - it is not necessary to achieve complete wetting under the tab - but at least make sure it is soldered to the pad.<br /><br />Cheers!<br />Russ</td></tr></table>2016-12-20T15:01:56-07:002016-12-20T15:01:56-07:00Russ White<table class="content postContainer" width="100%"><tr><td>It is not strictly necessary to use hot air, but it does make the job easier.<br /><br />You can use a soldering iron, just do the big tab last - it is not necessary to achieve complete wetting under the tab - but at least make sure it is soldered to the pad.<br /><br />Cheers!<br />Russ</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid24785:1Soldering output buffers<table class="content postContainer_Alt" width="100%"><tr><td>I need to add the output buffers. Do I need a hot air soldering station for that (so that the heatsink solders) or can I just solder the pins with an iron? I dont have a hot air, so Id have to find one to borrow or use a toaster oven<br /><br />Im converting from a single setup, where I wasn't using the buffers, now to a dual.<br /><br />Thanks, John </td></tr></table>2016-12-19T18:06:52-07:002016-12-19T18:06:52-07:00JohnG<table class="content postContainer_Alt" width="100%"><tr><td>I need to add the output buffers. Do I need a hot air soldering station for that (so that the heatsink solders) or can I just solder the pins with an iron? I dont have a hot air, so Id have to find one to borrow or use a toaster oven<br /><br />Im converting from a single setup, where I wasn't using the buffers, now to a dual.<br /><br />Thanks, John </td></tr></table>