ViewSonic VX900 19" LCD Monitor "1157" Questions

...that the AC adapter is putting out 12vdc with load connected, you can use car 12v bulb such as #1157 to check, otherwise it may have inverter or lamp assemblies problem. ...

...should be 5vdc, and 12_18vdc on the 25vdc rating caps. You should check with the load such as 12v 1157 carbulb but do not hit the power button (make sure the power is off, the power supply is

you have shorted circuits in the monitor. You can test the power supply using 12v car lamp such as #1157 bulb to test your power supply under load. Caps in the power supply do go bad as you can see in

...logic, there should be at least tow caps rated at 25vdc for the 15vdc inverter circuits. Try using 1157 12v car lamp attache to the 15vdc, the power switch will have to be off (the 5vdc and 15vdc

...If it uses externa; AC adapter, then you need to attach a car bulb such as 1157 using high filament to the adapter output and see if it still putting out 12vdc with load. If ...

...is running the minute the monitor is plugged into the outlet), you can use 12v car bulb such as 1157 as a load, the output voltage in the inverter should be around 12vdc with load, if it checked ...

...signal and PWM_DIM signal feeding the the inverter circuits. I would attach a12v car lamp such as 1157 to the inverter 12vdc power supply section to see if it can maintain 12vdc with load (do not ...

...should be tested with the load, you can use 6V 1A (6watts) lamp for the 5vdc, and car lamps such as 1157 (12v 8watts lo/26watts high) turn signal brake lamp using high filament connection for testing ...