FeedbackLoop | #81 - Samson D-1500 repair fail @feedback-loop | Uploaded 4 years ago | Updated 22 hours ago
The unit was taken apart and examined. 3.3V power rail was found to be low, and tree chips running hot: LD33 voltage regulator, 74HC245 buffer and Xilinx XC9536XL programmable logic chip. The Xilinx CPLD chip was found to be loading the 3.3V rail. The chip is programmable, and, most probably, the program is not available and not readable from such chip (even if a working unit was available). Therefore the unit was deemed beyond economical repair.
The unit was taken apart and examined. 3.3V power rail was found to be low, and tree chips running hot: LD33 voltage regulator, 74HC245 buffer and Xilinx XC9536XL programmable logic chip. The Xilinx CPLD chip was found to be loading the 3.3V rail. The chip is programmable, and, most probably, the program is not available and not readable from such chip (even if a working unit was available). Therefore the unit was deemed beyond economical repair.
