Post ARQ4wCtsvJV9c3fsoa by Ricardus@mastodon.sdf.org
 (DIR) More posts by Ricardus@mastodon.sdf.org
 (DIR) Post #ARQ3T9xafzJ08qzdMu by Ricardus@mastodon.sdf.org
       2023-01-08T02:30:51Z
       
       0 likes, 1 repeats
       
       Went into the lab to beep out two different circuit boards that use the same mic transformer. The boards use different labeling schemes so I just wanted to be sure about both.One simply says P+ P- S+ S-, which is obvious. The other one uses wire colors, except they're using the wire colors of the original vintage transformer.  My modern reproduction uses different colors, but working backwards on the schematic from the first one I was able to figure out what colors to use on the other.
       
 (DIR) Post #ARQ4fhmOrUfKSbIxcW by Davi_Dblees@mastodon.world
       2023-01-08T02:41:33Z
       
       0 likes, 0 repeats
       
       @Ricardus Maybe you can help me figure out the value of a resistor I need to replace. The color code stripes are:ORANGEBURNTBURNTGOLDI'm thinking it's 2 somethings.
       
 (DIR) Post #ARQ4qc8mAUEQ9kyNLk by Ricardus@mastodon.sdf.org
       2023-01-08T02:46:18Z
       
       0 likes, 0 repeats
       
       @Davi_Dblees 3 something something with a 5% tolerance.:-)
       
 (DIR) Post #ARQ4wCtsvJV9c3fsoa by Ricardus@mastodon.sdf.org
       2023-01-08T02:47:19Z
       
       0 likes, 0 repeats
       
       @Davi_Dblees If you're not joking we might be able to figure it out from a schematic or something.
       
 (DIR) Post #ARQ5WQMCMx5blzBh8C by Davi_Dblees@mastodon.world
       2023-01-08T02:50:19Z
       
       0 likes, 0 repeats
       
       @Ricardus My search for a schematic has so far been unsuccessful. It's a cheap old keyboard, SIEL MK610, pretty obscure apparently. Hashtags maybe?#SIEL #MK610 #schematic
       
 (DIR) Post #ARQ5YgwXfnLXnFGhDU by Ricardus@mastodon.sdf.org
       2023-01-08T02:54:15Z
       
       0 likes, 0 repeats
       
       @Davi_Dblees I'll put the word out on some DIY forums.