Case from 07/06/2022.
Changing power supply filter capacitor 3300 uf solved the problem.
Category: Uncategorized
Case #356465. Sansui C-77 preamplifier repair.
Different output signal level in left and right channel . Unbalanced output signal .
Repair.
Changing double front pot 100k ohm ” volume” solved the problem.
Cleaning did not helped.
One of them for some reason changed value to 60K ohm.
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.
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.
We buying for parts not working vintage audio equipment.
Brands- Sansui / Fisher / Pioneer / Kenwood / Mcintosh / Phase linear / Sony and others.
Vintage means – from 1932 and up to 1980.
Amplifiers, receivers, mixers, preamplifiers, tuners. Let us know what you have for sale and your price. Thanks.
In home service request for electronics/ low voltage system repair /TV and audio ..
If you need service or repair in home for audio / video/TV / low voltage systems / electronics / home appliances / security systems you can contact us here. We charge $75 for in home visit . We work in Washington state. Hours – 10-7 pm. (Monday – Saturday). We service all audio / TV brands.
Phone 253-632-4967
Metal detectors repair service. Provo electronics. Seattle area.
We offer metal detectors repair service.Estimate and diagnostic is free.
Garrett, Minelab, Whites metal detectors and commercial metal detecting equipment.
Text for questions 253-632-4967
Arcade games repair service. Provo electronics. Seattle area.
For local Seattle customers we offer arcade games repair service. In home service and diagnostic available . All brands.
Text for questions 
253-632-4967
Ask your specific questions about audio repair.
We will try to answer your specific question about your repair case or symptoms your unit has.
It is extremely hard to do expert answers to all questions online without basic diagnostic. It could be hundreds different reasons why your unit is not working or acting bad , but we will try our best .
Answer will be based on real life experience and our vision how to start , what to test and places to pay attention. We can approximately estimate repair cost. Technology level is not important . We will need brand name , model number and specific defect symptoms belongs to your unit . Audio equipment only. No speakers . (They belong to acoustic devices.) All brands. Thanks.
Emotiva audio equipment repair service.
Authorized repair service for Emotiva line of HIFI audio equipment.
For specific questions about price and terms you have to contact zzzebra67@yandex.com (Emotiva technician).Preamplifiers , amplifiers,processors and more.