I found this video splitter near the skip at my college, I walk past it every day and there's usually a piece of broken electronics there every week.
On first look, the case is very, very bent up - like something heavy was placed on it, or it was stepped on. Not sure what the fault is. It takes AC (for generating +5V and -5V) but I gave it DC and the power LED came on fine. Apart from that I've done no other testing.
What's amazing is the big 2200u 25V cap is quite squashed, but still measures 2300uF 0.01 ohms. However, I think I found the fault; one of the smaller 220u caps is squashed near the base and shows as shorted, for the negative rail. If this is the case then this would stop it working. I wonder if it was thrown out because of this, or if there's another fault. Amazingly, every other capacitor shows readings well within tolerance.
I'll replace the caps and see if it works. Need to find a 9Vac adapter but I suspect it will be fine with a 12Vac adapter, caps are rated 25V so they should only see around 16V with 12Vac in. The regulators may get hotter, only the +5V has a heatsink.
It is very common to see electronics/computer hardware at my college abused by students. A common "trick" in the electronics lab is to short the +15V and -15V supplies we have (dual rail) together, which blows the linear regulators.
Thumbs up to Jackcon for making rugged capacitors that can almost survive crushing!
On first look, the case is very, very bent up - like something heavy was placed on it, or it was stepped on. Not sure what the fault is. It takes AC (for generating +5V and -5V) but I gave it DC and the power LED came on fine. Apart from that I've done no other testing.
What's amazing is the big 2200u 25V cap is quite squashed, but still measures 2300uF 0.01 ohms. However, I think I found the fault; one of the smaller 220u caps is squashed near the base and shows as shorted, for the negative rail. If this is the case then this would stop it working. I wonder if it was thrown out because of this, or if there's another fault. Amazingly, every other capacitor shows readings well within tolerance.
I'll replace the caps and see if it works. Need to find a 9Vac adapter but I suspect it will be fine with a 12Vac adapter, caps are rated 25V so they should only see around 16V with 12Vac in. The regulators may get hotter, only the +5V has a heatsink.
It is very common to see electronics/computer hardware at my college abused by students. A common "trick" in the electronics lab is to short the +15V and -15V supplies we have (dual rail) together, which blows the linear regulators.
Thumbs up to Jackcon for making rugged capacitors that can almost survive crushing!
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