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    Charger fuse on the output side burned

    So this is a fual unit one side charges a battery and the other plugs into a camera and keeps that running. The battery is charging but the camera does not turn on. I checked tye F3 fuse and it tests open. It's a flush mount fuse. What size should I get I included pics from the back It's output...
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    I bought a broken SR-16 drum machine and need help finding the no sound problem

    So, this is an SR-16 4 midi channel small drum machine I bought for my daughter to play along on her guitar. I only get a hissing sound out of any of the channels. I tested most of the components and have not figured it out yet. I am including a picture of the board. A bunch of the resistors...
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    Want to get a cheap oscilloscope(advise)

    I have been reading and reading and want to get an oscilloscope. I have an old BK 1470 but it's only 10MHz. I want to use it for hobbyist repairs of marine amps, some audio stuff. Can hand held one handle the same as a table one...
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    Precision Variable DC Power Supply Question

    I am a semi novice at electronics diagnostic, I saw a repair on YouTube where the buy used a HP Precision Variable DC Power Supply giving the system 3.4V and 10A to get the board to heat up to find the short to ground using his finger touch. Then he used alcohol to see the actual component that...
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    Need help with a resistor on a ac adapter

    I have a broken AC Adapter 21.75V for a Black & Decker blower and the red light went off. Opened it up and found a blown resistor. I have the same exact setup just 21.75V instead of the 14.4V. My resistor is a R7 also. I get 18.74V at one end of the resistor and nothing at the other end, the old...
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