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Help please turn on the equipment and give the graphics that it is sounding but it does not sound where I can start checking I am new I studied electronically but I do not have the practical help please
This fault may be that the voltage that powers the amplifiers is not present (+ 49V) Check the source output connector CN902 pins 1 ~ 4 If there is not, the 49V, solder the R916, R917 and R918 and measure them outside, It may be that one or more are altered Go source diagram CM9520 diagram Fuente.pdf [797.02kb]
You are great jomi just what you told me I do not have the 50 volts in the cn902 connector and check the resistors 916 917 918 are good what else can I check