Eprom compatiblity for various brands

I always used to order a used mainboard to replace malfunctioning main board for the tvs I repaired . After reading a few articles on ifixit and other sources I have ventured out into replacing the eproms on some tvs . It is a fairly easy process but my question is can an universal eprom be used for any tv since most of the time they are blank and the data gets written to the eprom ? I always try to keep a large stock of say capacitors or diodes and resistors and it would be nice if I always had eproms in stock instead of waiting a few days to receive them . Better question would be if indeed all eproms have different pin functions is there a general group of eproms I could order to have most tv that need new eproms covered?

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