Sony STR-GX9ES partially powering up and no sound and no tuner screen
Vintage Sony STR-GX9ES does not fully power up (some lights work but not tuner display and no sound despite changing inputs and speaker A/B and other settings).
What is best way to troubleshoot this?
Boars all look OK inside and contact cleaner tried already.
One medium sized capacitor at C606 on power board has slightly bulging top.
How can I test this and the amp and other power input?
Thanks in advance.
Is this a good question?