Home Theater Questions? Ask a Technician for Answers ASAP
Hi and welcome to JustAnswer, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially, have you tried unplugging for an extended period of time? ...and hour...hours?
And then plug back in but into a different outlet? ...with no speaker wires connected?
Please consider / try unplugging as above described.
Then it would be indicative of an internal hardware issue.
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?
Great on the DIY!Please post back with clear pictures of the internal circuitry. Click HERE.These pictures would then serve as common references.
Please see above post.
Thank you for allowing me time to read your post, reference the Service Manual/schematic diagrams and compose this reply.
Let's start with the standby power supply board. This would be the upright squarish board towards the rear left with the front facing you.
Still, let's try check and review the basics. Proposed preliminary tries (if have not been done):
A friendly reminder: voltage measurements by its very nature requires that the unit be plugged in and turned on. It is therefore LIVE! Please exercise due care and caution.
It should be set to DC Volts; ---
The front panel top left POWER button?
This model would always be on standby condition as long as plugged into an outlet.
The voltage checks when able please; TNX
No prob; when able.
The "...CB 376 1.5..." is rather low as it should read +5.5. Please re-confirm. 2 pins of CB376 should have this +5.5V
Carefully read voltage between the 2 pins of capacitors C3714 and C3715.