Hi folks, Been away for a while due to personal stuff. Looking for a bit of help, got my air conditioning recharged around 5 weeks ago. Worked ok (nothing great) for a few weeks then nothing but warm air. When I open the bonnet and switch on the A/C, the fans burst into action. Garage that did recharge want £36 to diagnose using a leak test. Are there any things I could check out myself to narrow the fault down?