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Sinclair ZX Spectrum+ Troubleshooting Guide
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== If the power supply is fine but the machine still misbehaves == Work through single then multiple RAM failure as above. If the RAM is sound, or the fault is too severe to test RAM, check that '''+5 V is reaching all the ICs in the order IC1, IC2, IC24, IC23, IC3, IC4, IC26, IC25 and IC5''', and replace whatever open-circuit component is cutting the supply.<ref name="sm48" />
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