KBIC-125 (5 Triac version) schematic

[Jester]

I'm, trying to repair an old KBIC-125 motor controller. Schematic would be helpful.

The board has designators SCR1-5 along the heatsink, so quite different than the KBLC-240 schematics floating around.

anyone have a source for the schematic?

[Swake]

There are not many components on that board. I you really want a schematic you could reverse engineer it easily.

Much quicker however is to measure / check those components in place. A simple multimeter is likely enough. If you have a doubt remove them and measure out of the board.

[Swake]

And download the datasheet for that chip. There will likely be an application note for it somewhere too.

[alpher]

I seem to remember that years ago KB controlls came with schematic included in the box. To bad they all ended up in garbagge can. My advice, just buy a new one, not worth the effort to repair IMHO.