THAILAND'S Prime Minister was effectively removed yesterday. Banharn Silpa-archa, the provincial political baron who so clearly relished the premiership, said he would quit 'within seven days'. This was the price his coalition partners extracted for supporting him yesterday at the end of a torrid three-day no-confidence debate targeted solely at Mr Banharn. 'I think I have done good in this country - but we've agreed that getting someone else to run the Government will clear the air,' said a businesslike Mr Banharn. 'I will find a good man,' he said. The opposition failed to reveal any shocking new scandals but successfully undermined Mr Banharn's credibility as premier by blaming him for rampant corruption and personal weakness. It was not clear yesterday who the new premier would be, although the New Aspiration Party leader, the Defence Minister General Chavalit Yongchaiyudh, was a favourite. General Chavalit was one of the coalition partners who told Mr Banharn in private during the debate that his party would support him only if he stood down. 'Khun Banharn is a good man who has sailed into a troubled sea - it was our job to pull him ashore,' General Chavalit said yesterday. The leader of the Democrat Party, former prime minister Chuan Leekpai, who led the attack on Mr Banharn, said: 'The Prime Minister had to go. Too many mistakes - bad ones - have been made and he is accountable.' Mr Banharn's resignation was somewhat unexpected because he had strongly indicated a desire to brazen the debate out or take the Government down with him by dissolving the House of Representatives. He has clearly been persuaded to make the least disruptive decision by colleagues who are known to fear the heavy cost of another election in the near future. About US$750 million (HK$5.79 billion is estimated to have been 'invested' in vote-buying and other costs in the June 1995 election that brought Mr Banharn's coalition to power. Bangkok people yesterday appeared pleased with the decision: 'Things were getting much too dirty, much too stupid. It is good he has gone,' said Nop Benchaporn, a factory manager. But some people were disappointed that fresh elections were not called like they were in 1992. 'Something had to be done. But if the people around Banharn remain the same does anything change?' said an executive. Opposition MPs were yesterday revelling in their success at making some mud stick in a notoriously slippery Parliament. But many of them were also worried that since Mr Banharn's key weakness was appointing political barracuda to cabinet jobs merely switching leaders may not make the Cabinet more acceptable. 'Frankly we'd like to see another set of people run the country at this difficult time. But this is a democracy and we have done what we can,' said Democrat Party spokesman Abhisit Vejjajiva. 'I wouldn't be surprised to see a new election in the next few months anyway,' he added.