Hi All; I found a plug-in circuit board that looks like it might be for the TR-7 but not sure. Only marking is a bunch of numbers done with solder. They are: 1420D or 0 460 Measures about 3-1/16" wide x 3-3/4+ high. Has 7 contact strip on the bottom( 5 and 2) typical 2 holes on top for yanking out of the chasssis connectors. 5 transistors, TI 2N1377 all. Any ideas? tnx & 73... Rich WA2RQY
