http://milas.spb.ru/~kmg/files/schematics/diezel/vh4.rarI think that this schematics will not really helps you. Too few information.
Ps. For the future, please use the right topic. This topic "Most popular".
Its not for users. Moderators move themes there from other topics.
1`st topic - Guitar amplifiers and stompboxes.
2`nd - Novice questions
3`rd - Non guitar electronics
4`th - Most popular (forbidden for users, but not technically)
5`th - FAQ, don`t need translation.
6`th - Technology aspects
7`th - Guitars
8`th - Buy-Sell
9`th - Custom devices
10`th - Flood
11`th - Talk to admin