Wp-admin dashboard shows blank page after moving to different server.

Hello. It is really a disaster. After moving wordpress site from one server to another wp-admin dashboard crashed. It shows 200, no error messages, no error logs, just white page.
$ curl -I http://www.geekcasket.com/wp-admin/
HTTP/1.1 200 OK
Date: Thu, 09 Apr 2015 20:13:12 GMT
Server: Apache/2.2.29 (Unix) mod_ssl/2.2.29 OpenSSL/1.0.1e-fips mod_bwlimited/1.4
X-Powered-By: PHP/5.2.17
Cache-Control: max-age=604800
Expires: Thu, 16 Apr 2015 20:13:12 GMT
Content-Type: text/html

URL: geekcasket.com/wp-admin
I installed a new wordpress copy with fresh theme installed and it worked fine:
URL: test.geekcasket.com/wp-admin

You can see server specs at:
geekcasket.com/phpinfo.php

Please advise on what can cause such issue? Are there any paths or references which should be updated during migration? wp-admin worked fine on previous host. Any advise is highly appreciated.