hifi engine

Sansui 5000 one ch low

Hi I just picked up a Sansui 5000 One ch is low. very low it changes with the reverse button engaged. Both chs. play with the mono button pushed. It still has the F 1040 boards all switches have been cleaned and fuses checked. Any directions would be greatly appraicated.

Re: Sansui 5000 one ch low

I would suspect a problem in the equalizer amp or tone control board (which has transistors on it). Could be bad electrolytics or connections. I have seen transistors with corrosion on them; you can tell by the dark or black leads. The transistors are generally OK, they just need to be removed, leads cleaned (scraped off), then re-installed. If you have an oscilloscope you can check by testing inputs and outputs of these boards.