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Home / 2022 / June

Month: June 2022

Posted on June 12, 2022June 13, 2022 by Provo Electronics

Case #456718. Technics SU-7600 amplifier repair. No sound.

06.11.2022. No sound on both channels.
Pilot light is ON.
Voltage -35 volt and +35 volt from power supply are present. All output transistors are ok.
Relay control transistor TR354 ( 2sc828a) replacement solved the problem.

Category: Blog
Posted on June 2, 2022June 2, 2022 by Provo Electronics

Case #456758. Kenwood KR-6160 receiver repair. No left channel.

06.01.2022. No left channel.Right channel is ok.
Solution – cleaning “Normal – Separate” switch on the back panel of receiver solved the problem .
Dial pointer lamp replacement on pictures.
2 mm. LED lamp installation. Polarity is important.

Category: Blog
Tag: Case #456758. Kenwood KR-6160 repair. No left channel.

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