Modification Of Electronic Circuit

Technologies changes very fast and we as a electronic repairer must be able to cope up otherwise we will loose our business. Take flyback transformer as an example-those days the flyback came with two knobs, one for the focus adjustment and the other one is for the screen voltage (G2). But now some of the monitor designed by Samsung, LG and etc the flyback came only with one adjustment which is the focus. So how are you going to adjust the screen voltage just in case the display is very dim?

Those monitors setting were set in the factory using software and after usage for certain amount of time the picture becomes dim and need to be adjust. The only way to adjust is to turn the screen voltage at the flyback transformer. Without the screen adjustment knob there is no way to increase the brightness unless you modify the circuit-but how? Due to this we as a electronic repairer besides know how to repair must also have the knowledge to modify the circuit because there is no way for the monitor manufacturer to release the software to us. By following the screen voltage (G2) cable from the CRT board you will be able to see some 'extra' circuit nearby the flyback transformer pin. By changing and playing around with the resistance value in this 'extra' circuit, i believe you will be able to modify it and the brightness will increase. It is a matter of time because there is so many type of circuit out there. After few modifications, you will be expert in solving dim display with only a single knob at the flyback transformer.