Explain the symptoms. Add a bit more background information. Answer a few questions. That's the way to engage an expert to help solve your problem.
My car windows wouldn't open. Just the front ones. The car wouldn't lock with the plip. After a flurry with Halfords and fuses to no avail I rang my regular, local garage, Smallbills. They are always polite, reasonable and even call me when it's service/MOT time to book me in. I explained my problem and the lovely chap said, ' Just drop in and we'll have a look. Probably a fuse.'
On arrival I was passed straight to a mechanic - lovely big greasy hands, smudged blue overalls and a rich, maybe Polish? accent. An expert in his trade. I could almost see his diagnosis brain clicking into action as he went through his mental flowchart and ticked off possibilities as he went. Click, click, click. He waggled a loose wire to the door and da da! His magic hands had worked their wonders. Nothing to do with fuses, then. And as the song goes, no charge.
When you talk to the right people, who've put in their 10,000 hours, their brains are programmed to solve the right problem. I hope we can offer that service too.