Well the intermittent LCD screen flicker on the 1545 is a known issue.
Try attaching an external monitor and see if you still get the flicker.
This is a mid-price laptop, but the quality of construction is a disappointment.
I used to like some Dell laptop models for fair quality at a fair price.
But I am seeing many complaints on forums and reviews in the last 18 months, especially for the budget and midrange price models.
You can view or download the service manual free from Dell here -- note that is in web page format, not PDF, so if you download it, be sure to unzip it into a new empty folder. Otherwise you'll have web page parts scattered all over your desktop.
Disassembly is not very difficult, but in my experience it is not likely to result in a repair. You will probably not find a loose wire or crimped cable, or any obvious fault. Best of luck, and start saving for a Compaq, HP or Apple.
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