Hi,
We recently did the annual on our M20K 252 and noticed that the boost pump would only run with the high boost switch on but not the low boost switch:
- Checked the switch and boost pump regulator and found that there is a short on cable #2 from the regulator (the yellow cable is somewhere connected to GND). The short has actually damaged the big transistor on the regulator board (a PMD17K100).
- Now the challenge comes: where is the short between cable 2 and GND.
-> Anyone who has seen similar issues with the low boost pump?, any hints on how to find the short?
Thanks,
M252