Hello. I stumbled with an amplifier and can not solve the problem. replaced the transistors 80NF55 and resistors 33om in the power supply, and now I have + -45.5v, on the operational amplifiers + -15v, on the gates of transistor amplifier 0v. protection is triggered, for which part I can not understand. transistors are all intact. I tried to remove all the output transistors, still in protection. Please help. I can't find schematic diagram.
I know nothing about these amps but some amps with micro-controller ICs blink a code to indicate the type of fault. Check the owner's manual if you're not familiar with these amps.
Hello Perry.
Today I sorted out a little with the amplifier and turned off the protection by disabling one diode, the amplifier turned on, at the moment it works well. But anyway, as soon as I return the diode, he blinks again.
For any answers thanks.
Today I sorted out a little with the amplifier and turned off the protection by disabling one diode, the amplifier turned on, at the moment it works well. But anyway, as soon as I return the diode, he blinks again.
For any answers thanks.
you can use mysteg manager to read out the error memory. Some reseller should have this, maybe you can ask them to read it out.
Hello friends.
on the motherboard there are two negative masses. which somehow pull together resistor. the resistor went into a leak and a difference of 5v. appeared between the masses. this provoked protection. this diode is a dual anode-cathode-anode-cathode in the transistor case, so I understand this as pulling the diode assembly through a 27kom resistor. from this and worked protection. The amplifier repaired to me in a different place and maybe the master made it specially so that I could not figure it out. Thank you all for your participation, the problem is solved.
on the motherboard there are two negative masses. which somehow pull together resistor. the resistor went into a leak and a difference of 5v. appeared between the masses. this provoked protection. this diode is a dual anode-cathode-anode-cathode in the transistor case, so I understand this as pulling the diode assembly through a 27kom resistor. from this and worked protection. The amplifier repaired to me in a different place and maybe the master made it specially so that I could not figure it out. Thank you all for your participation, the problem is solved.
Can you point out which diode / resistor on the board? I sometimes repair these Steg K amps also.
Hi there folks, my problem on steg k4.02, pulled off this diode and now green led is solid but red blink's, any suggestions?
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