Sony shares fell 3.05 per cent to a three-week low this morning as analysts said its turnaround plans lacked bite.

Sony revealed its strategy to recover its ailing fortunes last Thursday, and investors could push shares down further if they don't feel UK-born CEO Howard Stringer is going far enough.

The company last week unveiled plans to cut 10,000 employees, or about 7 per cent of its global work force, and sell 120 billion yen ($1.07 billion) worth of non-core assets.

Not all analysts are critical of the recovery plans. Lehman Brothers analyst Yuki Sugi called it "solid", adding that restructuring of the electronics business would lead to a steady profit recovery.

Sony estimates the restructuring will produce cost savings of 200 billion yen by the end of the business year to March 2008, when it aims to achieve an annual group operating profit margin of 5 per cent, the company has confirmed.

Speaking to the Financial Times, Stringer admitted to wanting to target poor-performing Sony units, but explained that corporate culture and Japanese sensitivity to job cuts stayed his hand.

Some analysts feel that such internal conflict between need and tradition may also spell trouble ahead.