|
From memory some early teletext cards used 2102 or 2114 SRAMs. These SRAMs are prone to failiure. I've never replaced one in a TV (most people don't use teletext and aren't willing to pay for it to be repaired as long as the rest of the set is working), but I've replaced many in various vintage computers where they were often used as video RAM and their failure will cause a corrupted display.
It's been a long time so my memory may be way off.
|