TDA1540 Kondensatoren

Moin,
diese Kondensatoren sind alterungsbestaendig und muessen nicht getauscht werden.

73
Peter

Hi,

I expect you want to improve the sound-quality of the DAC.
I have no experience with this kind of modification (I repair, not modify circuits )

I can give you the original values from the service-manual:

Pin 12 + 13 = 0.47uF
Pin 14 + 18 + 19 = 100nF
Pin 20 ~ 25 = 22nF

In the original Signetics TDA1540TD datasheet they give these values:

Pin 12 = 470nF
Pin 13 = 220nF
Pin 14 = 100nF
Pin 18 = 47nF
Pin 19 = 22nF
Pin 20 ~ 25 = 10nF

The rest of the Philips-circuit is the same as the one suggested by Signetics except for Pin 3. Here Philips use a RC-circuit for the Vref1 instead of just a decoupling capacitor.

Room for a lot of experimenting

mfg,

/tri-comp

Thanks,
I have the datasheet and the service-manual.
I am wondering if increasing the values would result in a sound-improvement?