Opened it up, poked around inside touching this and that, made sure the connections were secure, bent a few wires around...
Never found a clear cause for it's failure to function, but after I screwed the lid back on and hooked it up it worked perfectly.
I think I've mentioned before that this happens a lot.
I call it "Faith Fixing" because whenever I lay my hands on the inside guts of electronic things, they come back from the dead.
Now, I'm also good at finding real problems and fixing them--don't get me wrong--but the unexplainable repairs probably account for 50% of my successes.
When our Honda's air conditioner suddenly stopped blowing air last night, we feared for the worst but tried to be brave.
After all the fuses checked out fine (don't forget the ones under the hood!) it started looking like a lot of money was going to be the only solution. Bummer.
Still, with nothing better to do after shop hours I turned to the Google and within only a minute or two found a chart that explained how to make the AC diagnose itself--COOL!
Hold these 2 buttons down, turn the key, release the buttons, count the blinking lights.
12 blinks means the blower motor or it's transistor are bad--now we're getting somewhere! And since an electric motor will almost always warn you of impending failure through loss of efficiency, weird noises, and bad smells, I figured it was this mysterious transistor.
I tried to "sleep on it".
Early this morning after dropping Honda Girl off, I returned to Mr. Google instead of dropping the car at a repair shop--the water pump cornholing we got on my truck was still too fresh in my mind.
Found a YouTube video on how to replace the blower motor, which showed me just how easy and cheap THAT repair would be, if needed.
Don't even have to take the dashboard apart? So where's this darn "transistor" then? Must be close by...
Within an hour I've returned from Radio Shack (+HEB) and soldered a 1 ohm resistor across 2 poles on the offending module to simulate the correct load, then re-installed it to check the blower...which works fine! Looking good...
An hour after that and I've returned from O'Reilly's with a replacement module and am driving around the block in bare feet enjoying cold cold air.
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It was also nice to successfully use my knowledge and skills on a job where I knew exactly what I was doing for a change.
The internet is a wonderful thing, especially when it not only saves you money but also makes you feel better about yourself.