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JMD1-63-00-ISS2 DSP board (different from the one shown on the schematic, which is JMD1-62-ISS-2)
EDIT: The amp is a JMD102, so I believe the attached schematic is incorrect.
Started out as a heat-related noise that occurred just after warm up. Now the DSP board has died altogether and the front end won't pass any signal - only a noise probed. A "repair" really doesn't seem likely given the U1 the Analog Devices DSP IC, which appears to be in a package called a BGA (ball grid array)
Any idea where to source a replacement? JMD1-63-00-ISS2 DSP board (sticker JMD1DSP ISS6)
Or how to proceed from here?
EDIT: The amp is a JMD102, so I believe the attached schematic is incorrect.
Started out as a heat-related noise that occurred just after warm up. Now the DSP board has died altogether and the front end won't pass any signal - only a noise probed. A "repair" really doesn't seem likely given the U1 the Analog Devices DSP IC, which appears to be in a package called a BGA (ball grid array)
Any idea where to source a replacement? JMD1-63-00-ISS2 DSP board (sticker JMD1DSP ISS6)
Or how to proceed from here?
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