After three straight years in the red, Sony Corp. faces another rough year ahead as the electronics giant struggles to make its mainstay television business profitable amid a host of challenges.

Like its Japanese peers, Sony's business performance was affected by the March 11 earthquake and tsunami, leading the company to post a massive group net loss of ¥259.59 billion for the fiscal year that ended March 31.

But the natural disaster, which is likely to have a negative impact of some ¥440 billion in sales and about ¥150 billion on its operating balance in the year begun in April, is not the only hurdle Sony needs to overcome.