Hi, I have been tinkering with the little box a while ago but did not finish it. Got back to it yesterday evening and found out that there is full supply voltage present on both channels and lots of brum. Recchecked connection and managed to make one channel work properly but could't have made the other channel work properly.
Any idea for what might be the cause?
(list of mods - changed diodes for byv27-200 schottkys, shortened feedback path - moved r5 closer to the chip, bypassed volume pot and conected inputs directly to the board thru 2.2uF and 22kohm; also drilled the board where r4 and r5 are connected)
Any idea for what might be the cause?
(list of mods - changed diodes for byv27-200 schottkys, shortened feedback path - moved r5 closer to the chip, bypassed volume pot and conected inputs directly to the board thru 2.2uF and 22kohm; also drilled the board where r4 and r5 are connected)
Funny you should have that problem, one of mine just did the same. I did a fair amount of modifications and think that I've damaged the chip...static maybe?
Anyway, after checking everything there is nothing left so it looks like toast!
Next board please!
Lee
Anyway, after checking everything there is nothing left so it looks like toast!
Next board please!
Lee
Member
Joined 2003
Wish it was that easy on mine!
This is the 3rd I've done and it has all the other 'experiments' lumped into one.
Think it's an AMP6 next....definately!
Lee
This is the 3rd I've done and it has all the other 'experiments' lumped into one.
Think it's an AMP6 next....definately!
Lee
- Status
- Not open for further replies.