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Hi John,
Thank you!
? ? ? ? ? ? ? ? ? John: First, try firmware update.
? ? ? ? ? ? ? ? ? John: Second, try to troubleshoot Processor board and SA board.
Roger that, I'll do above and let you know.
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I have downloaded EEPROM 28C256 contents by universal programmer.? What is weird is that I tried several times because sometimes the programmer failed to read out the EEPROM and said the chip is broken.? It finally completed after many tries.? And I'm sure my programmer is good because I bought a new 28C256 and that was without any trouble in writing and reading with this new 28C256.
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Thanks again for the kind advice.
Regards,
James?
