Audio Systems/Onkyo Error


Daniele Ghelli wrote at 2014-04-14 10:51:58
I was given a TX-DS747 with the same problem: ERROR SIO and display often going off. The problem was an instable +7V power supply from Q923 regulator(see schematic pag. 6 of service manual). New soldering of the three pins of the regulator solved the problem.

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Dan Fleury


Any and all repair questions related to Audio gear: Receivers, tuners, pre-amps, CD players, etc. I currently own a repair business and have been open and active in this area for 30 years. Please NO CAR installation questions.


30 years in the repair business.

BS computer technology

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Currently providing repair service for 6 dealers.

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