Ampeg SVT 4 Pro schematic needed

[pbenjamins]

Enzo: Big Thanks Man from pbenjamins in Huntington Beach, CA ! (trying to get a buzz / tearing sound out or an SVT4-Pro even at low audio levels)

[hoangduongo]

sorry for digging up an old topic but I'm servicing a SVT-4 PRO which has the Lineout board quite different from the schematic that Enzo provided.
From what I see, the board has more component than listed in the schematic, the component markings are also not entirely the same.
For some terrible reasons many component on this board were burnt (yes, burnt) along with some pcb tracks. Now I need the correct schematic and layout to recover this board. Can any one help?
FYI, the amp's S/N is ASKDKB0031 and the marking on the board is 06A539-03 REV1 & WK2C 94VO 9828, if these mean anything helpful.
Thanks alot,
Duong

[Jazz P Bass]

Your best bet is to call the manufacturer.

LOUD Technologies Inc. Corporate Office
16220 Wood-Red Road NE
Woodinville, WA 98072 USA
Ampeg, Blackheart, Crate, Mackie
Tel: (866 858 5832)

[hoangduongo]

After looking into the board and carefully compared with the provided schematic, I managed to trace the circuit on my Lineout board.
It turned out that the extra components (2 dual opamps and some other R, C) are there to replace the 2 balance transformers. Others parts are practically the same as schematic.
Today I will replace the burnt components and tracks, hope everything will work smoothly.
Duong,

[alansombr]

Hi, can anyone help me?

After looking into the board and carefully compared with the provided schematic, I managed to trace the circuit on my Lineout board.
It turned out that the extra components (2 dual opamps and some other R, C) are there to replace the 2 balance transformers. Others parts are practically the same as schematic.
Today I will replace the burnt components and tracks, hope everything will work smoothly.
Duong,

Hello good afternoon
Can someone please tell me a way to regulate the ap101 and ap201

Channel A distorts and Normal B