[sdiy] SG3821 replacement? Ma Sonic6 :(

[goddard.duncan at mtvne.com]

>>>Tapping the audio at the outputs 
> of those resistors (where they all meet) I hear nothing! If that 
> sounds strange, believe me i know it.<<<
> 
> 
sounds like the input's gone short-circuit. unless the point where they all meet is actually ground, as might be the case if the resistors are to attenuate....

>>>This has me to believe that the SG3821 (Transistor Array) is faulty, 
> to me their is no other explanation. Problem is, I don't know of a 
> replacement part for this chip, it is very old and their is ziltch 
> info available online, datasheets.....no way! I can find nothing.
> 
> Anyone know of any substitutes for this part, hopefully pin 
> compatible.<<<
> 
seems you've figured out which pin is which. what could it be doing except buffering/impedance matching the passively-mixed components from the filter stage? nothing an op-amp couldn't be set up to do.....

d.


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