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 Forum index » DIY Hardware and Software » Circuit Bending
Yamaha PSS 460, no sound! Amp La4500 replaced but nothing!
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Stereokromatik



Joined: Feb 21, 2012
Posts: 5
Location: Brazil
PostPosted: Sat Oct 02, 2021 8:11 am    Post subject: Yamaha PSS 460, no sound! Amp La4500 replaced but nothing! Reply with quote  Mark this post and the followings unread
Hi, everyone... I got a pss 460 from a friend, in immaculate condition, without any brand of use, however, it doesn't have any kind of sound...
It was kept for a long time... the speakers are perfect, and potentiometers too... all the commands where the leds light up, correspond normally, as if the keyboard were working normally. I suspected it was the La4500 chip, bought the new chip, installed it and even so it doesn't come out any kind of sound... The motherboard is in immaculate condition, smelling like new! To check if there was any kind of cold soldering, I reheated ALL solders from ALL installed chips, and no success again. I would like suggestions!
Next suspects would be the ym3014 (DAC) and ym3812 (OPL2)... what do you guys think?
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