Brisrascal 0 Report post Posted July 14, 2011 Anyone knows of how i can repair the PCB of a DIY Preamp?? I messed up one of the holes trying to desolder it. Share this post Link to post Share on other sites
alamakazam 0 Report post Posted July 14, 2011 wires reroute the pcb Share this post Link to post Share on other sites
Brisrascal 0 Report post Posted July 14, 2011 wires reroute the pcb Tried that but the hole happens to end at a trimmer pot position so its a bit difficult to just jumper it. Any ideas? Share this post Link to post Share on other sites
Cloud 0 Report post Posted July 14, 2011 some pictures? schematic? Share this post Link to post Share on other sites
alamakazam 0 Report post Posted July 15, 2011 pics but I guess u want to desolder your POT, but damage one of them... wire jump bottom PCB should be still ok Share this post Link to post Share on other sites
dennis28288 0 Report post Posted July 16, 2011 trace the route of the messed up hole, find a place where it is shorted to and chose to the surface. Remove some of the photo resist and solder a wire to it. Share this post Link to post Share on other sites
Brisrascal 0 Report post Posted July 17, 2011 [attachmentid=4635] [attachmentid=4636] [attachmentid=4637] Attached are the images of the PCB in question. Will work out how to post it online soon. Considered jumping it but its connected to the tube connector so am not too sure as to whether it will work. Therefore did not go ahead. Share this post Link to post Share on other sites
alamakazam 0 Report post Posted July 17, 2011 the middle pin is screwed up right? take a photo of pic3 on the other side, or trace the middle pin leads to where, then wire to it Share this post Link to post Share on other sites
Brisrascal 0 Report post Posted July 17, 2011 The other side of the pin is occupied by the pot that is on the last pic. I was thinking of jumpering a wire from that middle pin it where it teminates (which is on the tube socket) however am not particularly sure of its effect as the pot is used to adjust the voltages heading/coming from it. The setup is from a uncompleted tube preamp project that I was thinking of restarting again. Anyone know of a place where i can send it to for final touch up? Still thinking of working out the cabinet design and fabricating it. Share this post Link to post Share on other sites
alamakazam 0 Report post Posted July 17, 2011 a reverse angle shot of pic3 so this is a replaced pot? Share this post Link to post Share on other sites
Brisrascal 0 Report post Posted July 17, 2011 Yep, sure is. Have not been getting consistent readings so am thinking that the line is busted. Share this post Link to post Share on other sites