Phetishboy
Well-known member
I have these 2 identical switchers apart and have replaced the following:
-Both fuses (one in each unit)
-the 2 1000uf 16V caps with 1000uf 50v caps
Now, after replacing said components, one of them is still dead and gives no reading on any line, the other one is hissing and gives a .4 fluctuation on both the 5V and 12V lines, the -5V line measures -4.6 to -4.8 (also fluctuating). On the one with the fluctuating voltages, the hiss seems to be coming from the transformer in the middle of the circuit board, but I am not certain. When I powered it down, I received a hell of a shock from one of the components. Which component holds a charge even after being unplugged? What's causing the voltage fluctuations? I am just trying to see if I can get one or both of these working just to say that I did. I know I can buy new ones, but I am interested to know how these work, and where the main failures occur. If you repair these and know them like the back of your hand, please school me on what might be wrong.
-Both fuses (one in each unit)
-the 2 1000uf 16V caps with 1000uf 50v caps
Now, after replacing said components, one of them is still dead and gives no reading on any line, the other one is hissing and gives a .4 fluctuation on both the 5V and 12V lines, the -5V line measures -4.6 to -4.8 (also fluctuating). On the one with the fluctuating voltages, the hiss seems to be coming from the transformer in the middle of the circuit board, but I am not certain. When I powered it down, I received a hell of a shock from one of the components. Which component holds a charge even after being unplugged? What's causing the voltage fluctuations? I am just trying to see if I can get one or both of these working just to say that I did. I know I can buy new ones, but I am interested to know how these work, and where the main failures occur. If you repair these and know them like the back of your hand, please school me on what might be wrong.


