A few OEM-NOS RCA parts distributors. I dont know who they are sry.
For them you need the 6 digit RCA part #. Format is ######. It probably starts with a 2. Also have the FULL chassis # & the designation of
the IC ( such as IC### ) from the PCB just in case.
Alt is pull the old IC & get the generic numbers off that IF it has any.
Also if the IC got real hot the numbers can fade away. They can be searched
for & often subbed to a replacement line such as TCG.
73 Zeno
LFOD !