Tektronix TDS220 repair

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I'm having the same issue, i traced it back to the flash memory. there is a footprint marked U430A that is for the same chip, but in Standard 48 pin TSOP. I probed all pin connections and ended up finding that control pin 28 (OE#)  is cut off and i donn't know where it is supposed to connecto to since i do not have another board. Basically  flash is unreadable without this pin.