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#4
10-31-2015, 04:15 PM
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Known as a 9-57-VCR. IIRC a 9-90-03 piggy backed on a
blank 9-57 board. They did work good, we put in abt a dozen of them in the lates 70's. I have been watching for one to reverse engineer it but no luck in 2 yrs. If anyone has one please give the details. The pin-out should be no problem but I dont know if any changes were made to the board itself or if the 9-90-03 was even used in a TV. This board probably has a hoz hold pot on the board unlike the common 9-90 & an eight pinned IC IIRC. Been to long........... 73 Zeno 
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