Is there somebody on this forum(or knows somebody) who can troubleshoot/repair a small circuit board? It might need a few capacitors replaced. Looking for somebody local to Greensburg/Pittsburgh PA area.by JeanT November 16, 2020 No Answers ...
I want to use my 50 volt 10 microfarad capacitors because they are closer to the original ones size, thus I don't have to have a gap below the capacitor when I solder it on.
It takes a huge spike of current to charge those capacitors, which then hold your DC power stable through any dips or fluctuations later. It's a normal and unavoidable situation, but I suspect that there's more filter capacitance on your new supply than there was on the old one an...
Just for reference, the inrush happens when power is first applied and all the filter-capacitors are charged up (think of them sort of like fast acting batteries). It takes a huge spike of current to charge those capacitors, which then hold your DC power stable through any dips or ...
Alwaysunplug the unit to be serviced and allow it to cool down for a few minutes before removing top cover screws and/or changing any tubes. Also, tube circuit capacitors can store these high voltages for long periods — even when the unit is powered down — so be careful not to touch ...
the switching is limited to comparatively low drive current values. This in turn means that the capacitance value of the buffer capacitor can be drastically reduced as compared to dimmable light units that only rely on PWM dimming. With capacitors being costly and voluminous circuit elements, the ...