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If you have broken your IQ System - Please see  information about the chips you                                                             need to fix your machine below :

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Maxtec on there last production run forgot to sandpaper off the numbers of the internal parts. 

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Inside the HI-IQ

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74ls04 74ls32 74ls74
27c256/ 74ls373 86c71/81/91 UM6116-20 74ls257 74ls257 CD4051 CD4051 CD4051
27c512
TL082
74ls10 74ls32 74ls390 74ls139 ICL8069/ICL7135
LM385-1.2

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