Electro-Harmonix V256 Vocoder
Symptom I had an issue with this pedal, suspecting something wrong with the voltage regulator (actually, the issue was caused by external PSU itself). Since I was not able to find the schematics, I opened it and decided to do a quick review of the chips. Description of chips Once removed all the screws and nuts, be aware the PCB is super-stiff to remove from the casing. It took me 15 minutes at least to do so. Here are the chips I was able to identify: Id Man Chip ref Description Used for U1 CL CZ4272-CZZ 114 dB, 24-Bit, 192 kHz Stereo Codec DAC U2 TI TLC2272C Dual operational amplifier U3 No chip found with this reference U4 AD ADSP-BF532 SBSTZ400 400 MHz High Performance Blackfin Digital Signal Processor Signal processing U5 SJ6E U6 No chip found with this reference U7 TI MC33078 Dual high-speed low noise operational amplifier U8 TI MC33078 Dual high-speed low noise operational amplifier U9 TI MC33078 Dual high-sp...
