first atemp to make a gc gone wrong

[wuffer]

now it only play little music with a discman connected.. when i connect anything larger it just come with noise... maybee i should just order a pcb some where

 

[Nuuk]

now it only play little music with a discman connected.. when i connect anything larger it just come with noise... maybee i should just order a pcb some where

Do you connect through a volume control or preamp?

What sort of noise?

 

[wuffer]

both preamp.. xbox direct without a preamp...

its dificult to explain wich kind of noise its is..

 

[wuffer]

i think the problem is in the input... when i dont have anything connected then it's silent.. but im not sure...

 

[Nuuk]

i think the problem is in the input... when i dont have anything connected then it's silent.. but im not sure...

It sounds like some sort of ground loop. Are you getting a humming noise?

 

[wuffer]

not sure but i think that can be the problem...

 

[wuffer]

looked at it again and cant find any errors after the drawing.. but i got 26v on the output

anyone got pics off any lm3886 designs???...

 

[wuffer]

(there was no dancing smilies)..
just looked at it again and put it all together for the 117 time..
the speaker was quiet. could that be it?? plug'd music to it and there was music
its alive
now i need to finish the other channel and hook it op to my proac clones to see what they can..

thanks for all your help

last question from me this time... is there a lot of different in using a ordenary psu and a snubberized psu??

 

[Nordic]

I am so with the feeling... just blew the first 3875 chip... luckily have 5 spare... now first to repair the trace on the PSU which burnt through...

Did A real good job of the blowout, chip basicaly split in half...

Wait I'm not finished venting.. been at it since I woke up this morning... man I'm so depressed right now...