View Full Version : Follow Schematic or Actual Sansui TU-7700


AU20K
03-15-2009, 01:52 PM
How-Dee All!

I am working on a Sansui TU-7700 (hence the title of this thread). I am at the recapping stage and have come across a discrepancy. In the schematic the cap in question states 1uf 50v. The actual cap in the circuit is a 3.3uf 50v.

Q1: Are these two caps different enough to matter?

Q2: If it does matter, would you chose the schematic or the actual?

I have installed the schematic value and now wonder if I did all wrong.

I know that Sansui has/does typos and this may be one (the unit is c52 on board F-1507 if anyone has this tuner or schematic for comparison.

The board does not look like it has been worked on before me and the other components that I have checked thus far match the schematic.

Any help is greatly appreciated.

Thanks

AU :scratch2:

Hyperion
03-15-2009, 03:14 PM
The acquired wisdom on this sort of conflict is to trust the component(s) in your equipment now as being right***. Sansui documentation sadly did not keep pace with the production line, either it was an error in the schematic originally, or a late production change, and the schematic was never updated (more likely)

*** the caveat here is that your equipment should ideally never have been worked on for this to always be true.

John

AU20K
03-15-2009, 03:40 PM
OK, Thanks. I put in the schematic one, but it is an easy swap to set straight. 99.9% sure it has not been worked on before.

Thanks again for the help Hyperion.