Klein 3000 Quick Start Manual page 3

BNC is connected to the front of the Demultiplexer PCB, the following
steps can be taken,
a. Removing the two screws that hold the locking bar on the rear of
the TPU, slide the locking bar back to remove the top cover from
the TPU exposing the TPU Power Supplies and the 200 Volt
Transformer.
b. On the TPU Power Supply PCB, Klein Part Number 14102048,
measure R11, Klein Part Number 12100547 with a DVM. It should
read 4.7 ohms. If it reads open or a high value resistance, it should
be replaced. Use a resistor supplied by Klein or an equivalent 4.7
ohm, 1 watt
c. If you replace R11 the PCB should be removed.
caution in removing this PCB. Mark all connectors and be
careful to reconnect them to the proper place when the PCB is
reinstalled.
On newer Universal Power Supplies, measure R10.
assuming a degree of technical competency:
resistor of proper physical size.
Note:
See the note at the end of this document for
information on R10.
R11
Use extreme