2 there is no sound output on the speakers anymore
Sony TA-FE910R
I dont understand much of the internals of my technical devices, unfortunately. Its getting power and I can turn it on, LED's are shining from inside and from the power button. Also you can connect other devices t the AC-Power Outlet. But there is no sound output on the speakers anymore. I tried every input channel, different cables and every output speaker channel. All dead output.
And diffrent speakers of course
Im affraid I damaged it when I, in my stupidity, coneccted a battery powered fary lights to the music output (speakers) adapter/ports. I know, I shouldnt have done that. But im not sure its realy the reasen for it to be dead and I never would understand whats damaged exactely.
Thanks for your interest! Havent expected that :)
PS: I also checked the boards inside for any burned stuff. But with my untrained eyes I coulnd find any obvious damaged components
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Update (11/06/2021) ===
ok I got the multimeter now and watched some youtube videos to get an expert.
I would set it like on the photo to measure the 2.2V:
But then… Where do I have to touch the black and red stick of the multimeter? One of them to the 7th pin of CI 401 (photo), but which one? And the second to…?
And I’ll do all this while the amplifire is pluged in and powered on right? Little afraid of that :)
Es esta una buena pregunta?
893 
2.3mil 
@schniefelix let's see what we can find out. I wonder if it is the amp stage that got "shocked". Basically everything works except there is not sound.?Just to make sure, have you check with a headset yet?
- de oldturkey03
Ohhh! Now that you say it and I listen REALY carfully: There is some output for the headphone. But its VERY weak/silent.
From the speakers i still hear nothing than silence
- de Felix M
@schniefelix sounds like the amp stage is blown. Can you post some good pictures of your circuit boards (both sides) with your QUESTION? That way we can see what you see and might identify the components/circuitry that you need to focus on. You will need at least a multimeter.....Agregar imágenes a una pregunta existenteDid you hook it up to where the speakers connect to? If so there is a board that has two relays on it and those can act like fuses......
- de oldturkey03
I try to organize the multimeter as soon as possible.
I hocked up the headphones on the front pannel instead of the back.
Relays are those two blue boxes on the Audio-Out Board right? I was wondering if those might functioned as a fuse and saved my ass, kinda. But when I was trying to understand their funktionality I thought I coulndt test them with the multimeter becuase they worked like a switch (which is turned off). But I might got wrong with that understanding?
- de Felix M
@schniefelix yes, those are the relays. Did you try and connect the battery powered lights to that board (picture number 6)?
- de oldturkey03
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