Hi John
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Does your board look like this:
This board is the 7", type 5 ver4.
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Does the Big Chip on yours have RA8875 stamped on it??
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It's possible the display you ordered has the wrong controller - from what I've seen the type 7, i.e. ER-TFTM070-7 has a LT7683 controller which is probably not compatible.?
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Can anyone else comment on this controller chip?
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Regards?
Phil
VK2KKZ
