Supply Unit
Is it safe to dismantle a power supply myself?
I take a 12 volt unit (PSU) for a pedal guitar effect, but the connection is dubious and it continues cutting. Will it be safe for me to unplug from the wall and to dismantle myself to gan to see if I fix it?
Chances is a cord that has become loose and must be resoldered or a connector has been stretched and must be replaced. Try replacing the first connector, if not go around, and then opening the offer and look closely at the connections to your son. There are currently two types of power supplies on the market: "linear" type with a 50-60 Hz down transformer and the "switching" correct type, filters and chops the voltage of the line before being sent to a small step down transformer ~ 40KHz. If yours is a linear, you can not open it up once and disconnected without worrying that you will be shocked by the capacitors. But, if the switch type, you must be very careful that the online stores cap entry to about 170 volts for countries that use 120 VAC and about 340 volts for countries that use 240 VAC. You may wonder how a load capacitor to a voltage above the line? Because your household voltage is a sine is positive and negative (hence, "AC"), someone had to find a decent way to measure and display its value. He was decided that the best way was to express what would be the equivalent DC, as DC is stable and is commonly used as reference. AC metered RMS give its equivalent DC. But the waveform of the AC voltage will exceed this value by a factor of 1.414. So take 120 VAC (RMS) and multiply by 1.414 and you get a peak voltage of 170 volts, which is the approximate voltage of the input capacitor will be charged to the United States, Canada and other countries using 120 VAC. It will most likely not be a fuse, as you said works device, then cut. Fuses are OK or they are blown, they are almost never intermittent. K. Kaas
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