Fixing a faulty PIR light that drains batteries.
Added 2020-01-28 01:43:47 +0000 UTCI've come across this exact issue with low power battery operated items before. A rogue component that suddenly decides it's going to draw current, and the normal standby current of a few tens of microamps suddenly becomes milliamps.
Can you guess which component failed?
Comments
Depending on the circuitry you can sometimes change a resistor or capacitor value to change the on-time. It's also possible to get ones that retrigger as long as there's movement. Others do a one shot or defeat the retrigger function by illuminating their own light sensor making the unit think it's too bright to need to turn on.
Big Clive
2020-02-02 07:45:19 +0000 UTCExcellent troubleshooting and fix. I have a couple of these in the closet for the Mrs. and I but I wish they stayed on longer than 15 sec. Like, maybe a minute? They seem to stop sensing movement while they are on.
2020-02-02 02:34:50 +0000 UTCThis is what is in most desktop computers. And on most SBCs like Raspberry Pis. I don't know when the last time was I had a computer component in my hands (made in the last 5-10 years) that used TTH chips vs surface-mount ones.
Ryan Coleman
2020-01-31 20:40:08 +0000 UTCMy 1st thought was a capacitor- didn't realise it would be so tiny thou- I was expecting an electrolytic can, amazing learning curve for me, I am going to move up a tier- Subways for you from now on Clive! ;)
Mike Hughes
2020-01-30 17:02:59 +0000 UTCI've watched enough of your videos that I was thinking "The capacitor?", since those do seem to fail fairly often.
Roland Roberts
2020-01-29 05:20:56 +0000 UTCWe had a cap case, we used for a drinking glass, how things have changed !
2020-01-28 12:07:31 +0000 UTCThe amount of infomation I have gleaned from this video is unreal , the thermal imaging stuff is worth a video of its own and the tip with the component tester ( one of thy e best items on my bench ) and I’ve only watched the first five mins in Mc donolds car park , as a fully trained industrial spark who never cared for electronics mostly due to Clive I have a fully functioning electronics repairs setup in my garage and he’s still teaching me more
Jamie blatant
2020-01-28 09:27:38 +0000 UTCCaps are the butler... the butler did it.
Michael Thompson
2020-01-28 08:27:42 +0000 UTCAhh, that rewarding feeling when you fix something by replacing a part that costs almost nothing.
Wim
2020-01-28 07:24:08 +0000 UTC
