Zx Spectrum Test Program Link New! 【480p — 360p】

This is widely available on World of Spectrum (WoS) . Look in the "Utilities" section or search the archive for "Service Test." 3. Brendan Alford’s ZX Diag

If you’ve clicked a link and loaded a program, here is what to look for: zx spectrum test program link

If the test shows "Bank 0 Fail," you likely have a bad lower 16K chip (4116). These are notorious for dying due to voltage spikes. This is widely available on World of Spectrum (WoS)