Dummy Load

Using five (5) 50K Ohm power resistors

DALE RS-10 50K Ohm 1%

Build your own Dummy Load – Connect the five (5) 50 K ohm resistors

In series, then label the connection points A ~ E

A – B =	100 K Ohms
A – C =	150 K Ohms
A – D =	200 K Ohms
A – E =	250 K Ohms

The Dummy Load can be used for troubleshooting the backlight inverter power supply, by substituting for a single CCFL bulb on any one of the outputs on a multiple output backlight inverter supply.

Always remove the power before substituting the CCFL output with the resistor dummy load.

(I would) Connect a test clip lead from connection A on the resistor Dummy Load to the ground return point for all the CCFL bulbs to the inverter supply.

(Then I would) Connect the second lead from connection points C to the inverter output in which the plug was removed

Now apply power to he LCD – and test the inverter power supply output.

Build a second resistor dummy load so you can substitute another output on the invert power supply.

A to B =	100 K Ohms
A to C =	150 K Ohms
A to D =	200 K Ohms
A to E =	250 K Ohms
A to F =	300 K Ohms
A to G =	350 K Ohms