Having problems with your Smart Modular SV3170A ?

We have a Dell Inspiron 1750. We replaced the screen, and now have no backlight. Help.


Answers :

Hi
I'm assuming you replaced the screen because it was broken? If so then the new screen (backlit included) is bad and/or you missed a connection. Now, did you replace the screen because you had no backlit? If so this falls into a whole different category. I've repaired a lot of these monitors and it seems that for the most part the power supply capacitors and the inverter driver cause more problems than any other part. Did you test the inverter before replacing the screen? These easiest way to determine if the inverter is putting out power is to hold the DVM leads above the inverter output while its set to AC. You should get a significant reading (there is no correct indication because this is actually inaccurate. Testing the output directly would bog down the inverter to the point of giving a useless reading. If this reading is high then the inverter is working and the lamp is the problem. If there is no reading at all here then the power supply is at fault. Good luck
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