Hi,
I am trying to diagnose/repair an outdoor A/C unit.
The problem seems to be one or both PCBs, as there in no current sent to the fan and compressor.

The culprit seems to be the blown IC1 on the PCB (SA-KFR35W/BP2N1-110(SAN(RoHS)).
Would anyone have the schematic for this PCB so the IC1 needing replacement could be identified?
Thank you.
Regards.

 

Hi,
Looks like an Offline Regulator, e.g. LNK304GN Datasheet(PDF) - Power Integrations, Inc. (alldatasheet.com)
Several different sorts of course.
Usually something else has killed the regulator.
Have you tried YouTube, you might get a glimpse of the part number.
Make and model of your machine would help.
Good luck...........

 

Thanks for the good tip. Found the PCB on a few websites, unfortunately none of them with a clear enough photograph.
The appliance is a Midea split A/C, outdoor unit, Model MSCP12M4.
Will keep looking, and probably try to replace the whole PCB, not the only the IC.

kfr35w-bp2n1-110