Hello guys. I have an audio amplifier that has the following problem. When I power up the amp it light's the indicator error. The capacitors in the power supply was bloated and changed. The PSU has 2 bridge rectifiers with parallel connection among them, and has a thermal element and a 100 ohm 10w resistance in 220v. If you power up the amplifier with any of the 2 channels connected the amp works normally. If you leave and the 2 channels connected the amp turns on error. If I put the fan in thermal element the amplifier turns on normally. If I disconect the thermal element the resistance is getting very hot . The bridge rectifiers are OK. Has anybody any idea?
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clarify what you wrote : If I put the fan in thermal element
it seems you have parallel connected 100R resistor and NTC , in-line with mains
try with other NTC and later put proper soft start circuit instead
NTC in mains is OK with A class amps , but not so good for B class amps
clarify what you wrote : If I put the fan in thermal element
it seems you have parallel connected 100R resistor and NTC , in-line with mains
try with other NTC and later put proper soft start circuit instead
NTC in mains is OK with A class amps , but not so good for B class amps
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