Uploaded June 2022 | Updated September 2026, 2 weeks ago

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The epic ZX Spectrum from Hell repair continues!
Today we look at the upper ram chips, the logic chips (again), a crispy resistor, the power conversion transistors, the ULA socket, the lower ram (a bit) and the logic chips (again again).

But will repairing something in each of these areas result in a working 48k Sinclair ZX Spectrum?




Memory chip tester:
ebay.co.uk/itm/124726020732?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=HFzPW3iNSgu&sssrc=2349624&ssuid=tXgwcwPKQ-S&var=&widget_ver=artemis&media=COPY

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00:00 Introduction
00:31 Upper Memory Repair
01:17 Logic Chips Repair Part 1
05:18 Burnt Resistor Repair
06:21 Transistors TR4 and TR5
07:40 ULA Socket Repair
11:12 Lower Ram THE RETURN!
12:00 Logic Chips Repair Part 2
18:46 Testing

#zxspectrum #zxspectrum40 #zxspectrumrepair

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