Hello guys,
thank you for your valuable input you have given me ever since ive joined this forum.
am addicted to all abou circuits thats why i keep comming back..... currently got a Velodyne subwoofer CHT 8R and one of the resistor in the 15V rail gets which was tested open ....replaced with a new one the newly installed 330ohms gets real hot replaced the TIP transistor even though it tested good also all the caps around the area the subwoofer workst fine ....but the resistor gets real hot whereas the voltage drop which should be around 5v is 22v the transformer heats up too.....if i disconnect the preamp control board the resistor is cool and the voltage drop across it is 5v ....not sure if the preamp is playing up or if its the main powr am cum owersupply board
what am i overlooking or doin wrong any advice or input is very much appreciated
thank you will attach a schematic of the powersupply and amp board couldnt fine a schematic for the control board. the resistor tat is the issue is R801
thank you for your valuable input you have given me ever since ive joined this forum.
am addicted to all abou circuits thats why i keep comming back..... currently got a Velodyne subwoofer CHT 8R and one of the resistor in the 15V rail gets which was tested open ....replaced with a new one the newly installed 330ohms gets real hot replaced the TIP transistor even though it tested good also all the caps around the area the subwoofer workst fine ....but the resistor gets real hot whereas the voltage drop which should be around 5v is 22v the transformer heats up too.....if i disconnect the preamp control board the resistor is cool and the voltage drop across it is 5v ....not sure if the preamp is playing up or if its the main powr am cum owersupply board
what am i overlooking or doin wrong any advice or input is very much appreciated
thank you will attach a schematic of the powersupply and amp board couldnt fine a schematic for the control board. the resistor tat is the issue is R801
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