Klein 3000 Quick Start Manual page 4

d. If after replacing R11, the Towfish boots up, however you observe
deteriorated performance, it is possible some other components
may have been damaged.
e. Using the below partial schematic of the TPU 200 VDC Power
Supply PCB as a reference, replace D7, D8, D9 and D10. Also
ohm out R9 and R10 to confirm proper value. Replace R9 and/or
R10 if the value is not correct.
R11