A: Yes. Unlike some “burn-in” programs from the 80s, modern diagnostic suites do not over-stress the ULA or transistor driver circuits. However, do not leave a pattern test running for 72 hours straight on an un-heatsunk ULA.
128K models have extra memory banks and the AY-3-8912 sound chip. This suite tests bank switching and envelope generators. zx spectrum test program link
If you're looking for a specific test program link, please provide more information or context about what you're trying to achieve or the error message you're encountering. I'll do my best to help! A: Yes