*Nikkei falls 1.3 percent, led by exporters on strong yen
*Banks drop sharply after U.S. peers hit by credit concerns
*Trade volume thin (Adds stocks and comments)
By Taiga Uranaka
TOKYO, Aug 26 (Reuters) - The Nikkei average fell 1.3 percent on Tuesday, led lower by exporters such as Canon Inc <7751.T> on a stronger yen and a rebound in oil, while bank stocks succumbed once again to worries about the health of the U.S. financial sector.
These factors pushed down the market to erase most of the previous day's gains within minutes of the opening.
Credit problems are brewing at home as well, with builder Asahi Homes Co <1913.Q> plunging after it said its majority shareholder had filed for court protection.
"Concerns about credit risks both in the United States and Japan are still strong. There are also worries about the global economic outlook," said Yukio Takahashi, a market analyst at Shinko Securities.
The benchmark Nikkei <
> ended the morning down 169.14 points at 12,709.52. It had gained 1.7 percent on Monday.The broader Topix <
> lost 1.7 percent to 1,218.04.Market participants said domestic factors that could move the market were few and far between, and there was not much hope that sentiment would get a significant lift from an economic package the government aims to compile this month. [
]"Many in the market do not seem to be holding high hopes for the package, though it may lead to rallies in some specific sectors or stocks if it touches on topics such as solar cell power generation," said Noritsugu Hirakawa, strategist at Okasan Securities.
BANKS FALL
Banks shares were among the hardest hit after making sharp gains on Monday on hopes that U.S. investment bank Lehman Brothers <LEH.N> would attract a major investor.
But a South Korean regulator voiced concern about state-run Korea Development Bank's interest in acquiring a global bank, quashing expectations that it could emerge as a white knight.
No.1 lender Mitsubishi UFJ Financial Group <8306.T> fell 3.1 percent to 805 yen, while No.2 Mizuho Financial Group <8411.T> dropped 2.8 percent to 449,000 yen.
Asahi Homes, which trades on the Jasdaq startup market, plunged 24.1 percent to 44 yen after it said its majority shareholder had collapsed with 62 billion yen ($567 million) in debt, hit by higher costs and a housing slump in Japan.
Digital camera maker Canon shed 2 percent to 5,010 yen and industrial robot maker Fanuc Ltd <6954.T> lost 2.1 percent to 7,990 yen, both among the biggest drags on the Nikkei.
Bucking the trend, Yamaha Corp <7951.T> jumped 6.6 percent to 1,920 yen after a newspaper reported the music instrument maker is considering a management buyout. The firm denied the report.
Nippon Sheet Glass Co Ltd <5202.T> rose 5.1 percent to 552 yen after Credit Suisse revised up its forecasts for the glassmaker on a lower crude oil price assumption.
Trade was thin, with only some 636 million shares traded on the Tokyo Stock exchange's first section compared with last week's morning average of 784 million.
Declining shares outpaced advancing ones by more than 7 to one. (Editing by Edwina Gibbs)