Hi, do you have other manual for TDA8900 and ZC99905? I need more information to finish the layout with these 2 IC, appriciated with your any more information. Thanks.
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Please find attached the schematic.
I forgot to mention that I checked the power supply as well. I could measure all expected voltage levels for the different supply rails.
I replaced all electrolytic caps with low ESR types of the same value except the bipolar 680 nF capacitor 2025 for the radial drive supply. I replaced that with a foil type capacitor. Do you think that the low ESR value of the replacement caps could cause a problem? I read in another thread that in some cases a higher ESR cap could be beneficial.