Hello everybody.
I´m new to this forum, I´m seeking some advice on repairing, if possible my old but loved Technics SC-CH700 system.
The problem is in the SU-CH700 Amplifier unit.
I´ts been working fine till it started cutting off on an certain volume level.
I searched the web and one of the solutions was soldering a 10nf ceramic capacitor on the pins of the fan socket.
I did that, when I plugged the system to AC, when I pressed the power button I saw the fan started imediately to work, I thought it was normal, but then when I chose the cd or the tuner there´s no sound from the speakers or the headphone, the only thing that I can hear from the speakers is a buzzing sound that seems ths sound of the fan motor.
I removed the capacitor, but the problem persisted.
I noticed that the IC LC7536 on the side board is getting to hot when I touch it, I dont know if its normal because I never touched it before.
What could it be?
Can someone help me? I have the service manual if needed.
Thank you all in advance,
Hugo do Carmo.
I´m new to this forum, I´m seeking some advice on repairing, if possible my old but loved Technics SC-CH700 system.
The problem is in the SU-CH700 Amplifier unit.
I´ts been working fine till it started cutting off on an certain volume level.
I searched the web and one of the solutions was soldering a 10nf ceramic capacitor on the pins of the fan socket.
I did that, when I plugged the system to AC, when I pressed the power button I saw the fan started imediately to work, I thought it was normal, but then when I chose the cd or the tuner there´s no sound from the speakers or the headphone, the only thing that I can hear from the speakers is a buzzing sound that seems ths sound of the fan motor.
I removed the capacitor, but the problem persisted.
I noticed that the IC LC7536 on the side board is getting to hot when I touch it, I dont know if its normal because I never touched it before.
What could it be?
Can someone help me? I have the service manual if needed.
Thank you all in advance,
Hugo do Carmo.