Home Theater Questions? Ask a Technician for Answers ASAP
Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially, might the Sony perhaps be an STR-DG820? Even if no sound from any/all speaker terminals, is there sound to/if a subwoofer is connected?
A few tries, checks:
Still, if all external factors have been checked and ruled out, then the described symptom and displayed system message almost always point to an internal hardware issue.
The above would require that the unit be opened up for visual inspection, voltage/continuity/resistance checks, confirm faults and effect repairs.
Are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?
Equally important, could you make use of the repair/Service Manual or at the very least, the schematic diagrams?
Great on the DIY!
Proposed additional/external checks (if have not been done) even if just as for test purposes:
I understand and would look forward to an update when able.
Site policy requires that providing schematic diagram / Service Manual be offered as additional / Premium Service with a corresponding (token) fee. Would this still be of interest?
Please see private message.
Any sound when in 2CH/A.DIRECT mode?
Internally, carefully check the main board for: