As a tech lead you may have to be 'the voice of the company' to your team members, and sometimes say 'no' to requests that you might actually think are reasonable, from a purely tech perspective. The impact on your relationship with the team depends a lot on whether you play yourself as part of the team - and are visibly aggrieved on their behalf - or become perceived as 'one of the managers'. Whether this is a problem or not depends on the corporate culture and whether there are other managers visibly involved.
Also, remember to reserve time in your day to deal with problems raised by the team. These will often occur when you are least expecting them. And some may be outside your own comfort zone.
On a positive note I found that being a tech lead made me a better team member for my own management, since I better appreciated some of the leadership challenges they were under. You'll sometimes be left stunned by how hard or well your team members are working to solve problems, and this can make it all worthwhile.
Also, remember to reserve time in your day to deal with problems raised by the team. These will often occur when you are least expecting them. And some may be outside your own comfort zone.
On a positive note I found that being a tech lead made me a better team member for my own management, since I better appreciated some of the leadership challenges they were under. You'll sometimes be left stunned by how hard or well your team members are working to solve problems, and this can make it all worthwhile.