Hi Guys,
I have a S.M.S.L SA60 Mini Amp. The Problem is that the voltage regulator was shorted and I believe that it may have damaged other components on the board. Before the short the regulator had an input voltage of 18.37 volts and the output was 7.99 volts and the amp worked fine. Once The regulator was shorted the amp cut off the lights on the front and nothing works anymore. If you connect a speaker there is a quiet but noticeable humming/crackling sound that wasn't there before, even if there is no input connected to the amp. Also the board gets hot quickly around the area of the regulator but I'm not exactly sure which component is causing the heat. The regulator still has an output voltage of 7.99v but the input is around 16v. I believe that there are bad components on both sides of the regulator since the input voltage dropped 2 volts, and even though the regulator is still putting out 8v the amp doesn't work. Any help figuring out what is wrong with this amp would be greatly appreciated. My understanding of circuits is not that great but I know some of the basics and have replaced blown capacitors and such before. I don't know how to test all the components but I do have a multi-meter and I can solder/de-solder components as necessary. If you have any questions or need more detailed pictures please let me know.
Also the two wires on the bottom are simply patch wires from the front aux input to the rear RCA's to give me a low level out , If you look closely you can see where the tracks connecting the RCA's to everything else were severed. This was done previous to the problem and worked fine.
I have a S.M.S.L SA60 Mini Amp. The Problem is that the voltage regulator was shorted and I believe that it may have damaged other components on the board. Before the short the regulator had an input voltage of 18.37 volts and the output was 7.99 volts and the amp worked fine. Once The regulator was shorted the amp cut off the lights on the front and nothing works anymore. If you connect a speaker there is a quiet but noticeable humming/crackling sound that wasn't there before, even if there is no input connected to the amp. Also the board gets hot quickly around the area of the regulator but I'm not exactly sure which component is causing the heat. The regulator still has an output voltage of 7.99v but the input is around 16v. I believe that there are bad components on both sides of the regulator since the input voltage dropped 2 volts, and even though the regulator is still putting out 8v the amp doesn't work. Any help figuring out what is wrong with this amp would be greatly appreciated. My understanding of circuits is not that great but I know some of the basics and have replaced blown capacitors and such before. I don't know how to test all the components but I do have a multi-meter and I can solder/de-solder components as necessary. If you have any questions or need more detailed pictures please let me know.
Also the two wires on the bottom are simply patch wires from the front aux input to the rear RCA's to give me a low level out , If you look closely you can see where the tracks connecting the RCA's to everything else were severed. This was done previous to the problem and worked fine.