If it is clogged or just about, you can disassemble your case and use compressed air, hold rag over end of hose to catch moisture. I use dry Nitrogen and about 50 lb`s of pressure to blow out case and power supply. I work in refrigeration, and air conditioning. Have a tank on truck
for Nitrogen. you could find a A/C Ref. tech around your area to blow comp out with Nitrogen.
He may charge you. I would not, I also live in small town