Unfortunately, the answer is no. There is the highest probability that the impact damaged not only the LCD but also the control circuitry on the main board. Repairing this unit would be a multi-step process.
Considering the age and present value of this camera, paying the cost of having it repaired , approximately $150 really depends on how attached to your specific unit, but it is really not cost effective. The standard "rule of thumb" is if the repair cost is greater than 50% of the value of the camera, it is not worth it. A good used or refurbished power shot SX230 IS can be purchased for about $55 - $80 and I've seen brand new ones (with warranty) for around $100
Please keep in mind that my diagnosis & solutions provided are directly dependent on the accuracy of your description of the problem. As with any "do it yourself" fixes, success is a "team effort", since I can't see or touch the camera, and relies on the customer's manual dexterity and ability to follow the instructions well. If the "do it yourself" approach doesn't work out for you and you need conventional repair, please let me know.
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