1970s Sears TVs

[dieseljeep]

Originally Posted by centralradio

OK thanks.I cant recall what the tube lineup in the hybrid but it looked like a rats nest in there along with the BS house number transistors in them.

It's a well-known that they all did it that way!
RCA, Zenith, Motorola and the rest of them, all had their own private numbered semiconductors used. You had to look up the numbers in the ECG or TCG cross reference manuals, or consult the Sams for the replacement.
Some of the firms used selected devices, like Sony. If a generic replacement was used, the repair wouldn't last. Guess who had to make good on the rework.